add multiplex TokenForEth functions to metatransactions

* Remove TestAuthorizable

* Remove contracts/utils Authorizable and IAuthorizable

* Remove contracts/utils D18 contract

* Remove contracts/utils LibAddress contracts

* Remove contracts/utils LogDecoding contracts

* Remove contracts/utils Refundable contracts

* Remove contracts/utils LibAuthorizableRichErrors contracts

* Remove contracts/utils EIP712 contracts

* Remove contracts/utils TestRefundableReceiver contracts

* Remove contracts/utils EIP1271 contracts

* Remove contracts/utils ReentrancyGuardV06 contracts

* Remove contracts/utils LibMath contracts

* Remove contracts/utils LibFractions contracts

* Remove contracts/utils LibMathRichErrors contracts

* Remove DeploymentConstants as per PR review
https://github.com/0xProject/protocol/pull/643#pullrequestreview-1264963784

.circleci/config.yml

@@ -1,339 +0,0 @@
-version: 2.1
-
-parameters:
-    cache_version:
-        type: string
-        default: v5
-
-jobs:
-    build:
-        resource_class: xlarge
-        docker:
-            - image: node:16
-        environment:
-            NODE_OPTIONS: '--max-old-space-size=16384'
-        steps:
-            - checkout
-            - run: git submodule update --init --recursive
-            - run: echo 'export PATH=$HOME/CIRCLE_PROJECT_REPONAME/node_modules/.bin:$PATH' >> $BASH_ENV
-            - restore_cache:
-                  keys:
-                      - lib-{{ .Environment.CIRCLE_SHA1 }}-feat/NerveMixinArbitrum
-            - restore_cache:
-                  keys:
-                      - cache-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
-            - run:
-                  name: install-yarn
-                  command: npm install --force --global yarn@1.22.0
-            - run:
-                  name: yarn
-                  command: yarn --frozen-lockfile --ignore-engines install || yarn --frozen-lockfile --ignore-engines install
-            - setup_remote_docker
-            - run: yarn build:ci
-            - save_cache:
-                  key: cache-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
-                  paths:
-                      - ~/project/node_modules
-                      - ~/.cache/yarn
-            - save_cache:
-                  key: lib-{{ .Environment.CIRCLE_SHA1 }}-<< pipeline.parameters.cache_version >>
-                  paths:
-                      - ~/project/contracts/erc20/generated-artifacts/
-                      - ~/project/contracts/erc20/generated-wrappers/
-                      - ~/project/contracts/erc20/lib/
-                      - ~/project/contracts/erc20/node_modules
-                      - ~/project/contracts/erc20/test/generated-artifacts/
-                      - ~/project/contracts/erc20/test/generated-wrappers/
-                      - ~/project/contracts/test-utils/lib/
-                      - ~/project/contracts/test-utils/node_modules
-                      - ~/project/contracts/treasury/generated-artifacts/
-                      - ~/project/contracts/treasury/generated-wrappers/
-                      - ~/project/contracts/treasury/lib/
-                      - ~/project/contracts/treasury/node_modules
-                      - ~/project/contracts/treasury/test/generated-artifacts/
-                      - ~/project/contracts/treasury/test/generated-wrappers/
-                      - ~/project/contracts/utils/generated-artifacts/
-                      - ~/project/contracts/utils/generated-wrappers/
-                      - ~/project/contracts/utils/lib/
-                      - ~/project/contracts/utils/node_modules
-                      - ~/project/contracts/utils/test/generated-artifacts/
-                      - ~/project/contracts/utils/test/generated-wrappers/
-                      - ~/project/contracts/zero-ex/generated-artifacts/
-                      - ~/project/contracts/zero-ex/generated-wrappers/
-                      - ~/project/contracts/zero-ex/lib/
-                      - ~/project/contracts/zero-ex/node_modules
-                      - ~/project/contracts/zero-ex/test/generated-artifacts/
-                      - ~/project/contracts/zero-ex/test/generated-wrappers/
-                      - ~/project/packages/asset-swapper/node_modules
-                      - ~/project/packages/contract-addresses/lib/
-                      - ~/project/packages/contract-addresses/node_modules
-                      - ~/project/packages/contract-artifacts/lib/
-                      - ~/project/packages/contract-artifacts/node_modules
-                      - ~/project/packages/contract-wrappers/lib/
-                      - ~/project/packages/contract-wrappers/node_modules
-                      - ~/project/packages/protocol-utils/lib/
-                      - ~/project/packages/protocol-utils/node_modules
-            - store_artifacts:
-                  path: ~/repo/packages/abi-gen/test-cli/output
-            - store_artifacts:
-                  path: ~/repo/packages/contract-wrappers/generated_docs
-    test-exchange-ganache:
-        resource_class: xlarge
-        docker:
-            - image: node:16
-        steps:
-            - checkout
-            - restore_cache:
-                  keys:
-                      - cache-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
-            - restore_cache:
-                  keys:
-                      - lib-{{ .Environment.CIRCLE_SHA1 }}-<< pipeline.parameters.cache_version >>
-            - run: yarn wsrun -p @0x/contracts-exchange -m --serial -c test:circleci
-    test-integrations-ganache:
-        resource_class: xlarge
-        docker:
-            - image: node:16
-        steps:
-            - checkout
-            - restore_cache:
-                  keys:
-                      - cache-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
-            - restore_cache:
-                  keys:
-                      - lib-{{ .Environment.CIRCLE_SHA1 }}-<< pipeline.parameters.cache_version >>
-            - run: yarn wsrun -p @0x/contracts-integrations -m --serial -c test:circleci
-    test-contracts-staking-ganache:
-        resource_class: xlarge
-        docker:
-            - image: node:16
-        steps:
-            - checkout
-            - restore_cache:
-                  keys:
-                      - cache-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
-                      - lib-{{ .Environment.CIRCLE_SHA1 }}-<< pipeline.parameters.cache_version >>
-            - run: yarn wsrun -p @0x/contracts-staking -m --serial -c test:circleci
-    test-contracts-extra-ganache:
-        resource_class: xlarge
-        docker:
-            - image: node:16
-        steps:
-            - checkout
-            - restore_cache:
-                  keys:
-                      - cache-{{ checksum "yarn.lock" }}
-            - restore_cache:
-                  keys:
-                      - lib-{{ .Environment.CIRCLE_SHA1 }}-<< pipeline.parameters.cache_version >>
-            - run: yarn wsrun -p @0x/contracts-exchange-forwarder -p @0x/contracts-coordinator -m --serial -c test:circleci
-    test-contracts-rest-ganache:
-        resource_class: xlarge
-        docker:
-            - image: node:16
-        steps:
-            - checkout
-            - run: |
-                  git diff --name-only development >> changed.txt
-                  if ! grep -q \.sol changed.txt; then
-                    circleci-agent step halt
-                  fi
-            - restore_cache:
-                  keys:
-                      - cache-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
-            - restore_cache:
-                  keys:
-                      - lib-{{ .Environment.CIRCLE_SHA1 }}-<< pipeline.parameters.cache_version >>
-            - run: |
-                  yarn wsrun \
-                    -p @0x/contracts-multisig \
-                    -p @0x/contracts-utils \
-                    -p @0x/contracts-exchange-libs \
-                    -p @0x/contracts-erc20 \
-                    -p @0x/contracts-erc721 \
-                    -p @0x/contracts-erc1155 \
-                    -p @0x/contracts-asset-proxy \
-                    -p @0x/contracts-broker \
-                    -p @0x/contracts-zero-ex \
-                    -m --serial -c test:circleci
-    test-foundry:
-        resource_class: xlarge
-        docker:
-            - image: ghcr.io/foundry-rs/foundry:latest
-        steps:
-            - checkout
-            - run: |
-                  git diff --name-only development >> changed.txt
-                  cat changed.txt
-                  if ! grep -q \.sol changed.txt; then
-                    circleci-agent step halt
-                  fi
-            - restore_cache:
-                  keys:
-                      - cache-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
-            - restore_cache:
-                  keys:
-                      - lib-{{ .Environment.CIRCLE_SHA1 }}-<< pipeline.parameters.cache_version >>
-            - run: git submodule update --init --recursive
-            - run:
-                  command: forge test
-                  working_directory: ~/project/contracts/zero-ex
-    test-publish:
-        resource_class: large
-        environment:
-            NODE_OPTIONS: '--max-old-space-size=6442'
-        docker:
-            - image: node:16
-            - image: 0xorg/verdaccio
-        steps:
-            - checkout
-            - run: |
-                  git diff --name-only development >> changed.txt
-                  cat changed.txt
-                  if ! grep -q packages/ changed.txt; then
-                    circleci-agent step halt
-                  fi
-            - restore_cache:
-                  keys:
-                      - cache-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
-            - restore_cache:
-                  keys:
-                      - lib-{{ .Environment.CIRCLE_SHA1 }}-<< pipeline.parameters.cache_version >>
-            - run:
-                  command: yarn test:publish:circleci
-                  no_output_timeout: 1800
-            - store_artifacts:
-                  path: ~/.npm/_logs
-    test-doc-generation:
-        docker:
-            - image: node:16
-        steps:
-            - checkout
-            - restore_cache:
-                  keys:
-                      - cache-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
-            - restore_cache:
-                  keys:
-                      - lib-{{ .Environment.CIRCLE_SHA1 }}-<< pipeline.parameters.cache_version >>
-            - run:
-                  command: yarn test:generate_docs:circleci
-                  no_output_timeout: 1200
-    test-rest:
-        docker:
-            - image: node:16
-        environment:
-            RUST_ROUTER: 'true'
-        steps:
-            - checkout
-            - restore_cache:
-                  keys:
-                      - cache-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
-            - restore_cache:
-                  keys:
-                      - lib-{{ .Environment.CIRCLE_SHA1 }}-<< pipeline.parameters.cache_version >>
-            - run: yarn wsrun -p @0x/contracts-test-utils -m --serial -c test:circleci
-            - run: yarn wsrun -p @0x/contract-addresses -m --serial -c test:circleci
-            - run: yarn wsrun -p @0x/contract-artifacts -m --serial -c test:circleci
-            - run: yarn wsrun -p @0x/contract-wrappers-test -m --serial -c test:circleci
-            - run: yarn wsrun -p @0x/order-utils -m --serial -c test:circleci
-            - save_cache:
-                  key: coverage-contract-wrappers-test-{{ checksum "yarn.lock" }}
-                  paths:
-                      - ~/repo/packages/contract-wrappers-test/coverage/lcov.info
-            - save_cache:
-                  key: coverage-order-utils-{{ checksum "yarn.lock" }}
-                  paths:
-                      - ~/repo/packages/order-utils/coverage/lcov.info
-            - save_cache:
-                  key: coverage-web3-wrapper-{{ checksum "yarn.lock" }}
-                  paths:
-                      - ~/repo/packages/web3-wrapper/coverage/lcov.info
-    static-tests:
-        resource_class: large
-        docker:
-            - image: node:16
-        steps:
-            - checkout
-            - restore_cache:
-                  keys:
-                      - cache-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
-            - restore_cache:
-                  keys:
-                      - lib-{{ .Environment.CIRCLE_SHA1 }}-<< pipeline.parameters.cache_version >>
-            - run:
-                  command: yarn lerna run lint
-            - run:
-                  command: yarn prettier:ci
-            - run:
-                  command: yarn deps_versions:ci
-            - run:
-                  command: yarn diff_md_docs:ci
-            - run:
-                  command: yarn test:links
-    submit-coverage:
-        docker:
-            - image: node:16
-        steps:
-            - restore_cache:
-                  keys:
-                      - cache-{{ checksum "yarn.lock" }}-<< pipeline.parameters.cache_version >>
-            - restore_cache:
-                  keys:
-                      - lib-{{ .Environment.CIRCLE_SHA1 }}-<< pipeline.parameters.cache_version >>
-            - restore_cache:
-                  keys:
-                      - coverage-contract-wrappers-test-{{ checksum "yarn.lock" }}
-            - restore_cache:
-                  keys:
-                      - coverage-order-utils-{{ checksum "yarn.lock" }}
-            - restore_cache:
-                  keys:
-                      - coverage-contracts-{{ checksum "yarn.lock" }}
-            - run: yarn report_coverage
-workflows:
-    version: 2
-    main:
-        jobs:
-            - build
-            # Disabled until we begin actively developing on these packages again.
-            # - test-exchange-ganache:
-            #       requires:
-            #           - build
-            # - test-integrations-ganache:
-            #       requires:
-            #           - build
-            # - test-contracts-staking-ganache:
-            #       requires:
-            #           - build
-            # - test-contracts-extra-ganache:
-            #       requires:
-            #           - build
-            - test-foundry:
-                  requires:
-                      - build
-            - test-contracts-rest-ganache:
-                  requires:
-                      - build
-            - test-rest:
-                  requires:
-                      - build
-            - static-tests:
-                  requires:
-                      - build
-            - test-publish:
-                  requires:
-                      - build
-            - test-doc-generation:
-                  requires:
-                      - build
-            # Disabled until this repo has a coveralls API key
-            # - submit-coverage:
-            #       requires:
-            #           # Disabled until we begin actively developing on these packages again.
-            #           # - test-exchange-ganache
-            #           # - test-integrations-ganache
-            #           # - test-contracts-staking-ganache
-            #           # - test-contracts-extra-ganache
-            #           - test-contracts-rest-ganache
-            #           - test-rest
-            #           - static-tests

.github/CODEOWNERS

@@ -8,7 +8,7 @@
 
 # Dev tools & setup
 
-.circleci/ @dekz
+.github/ @dekz
 packages/contract-addresses/ @dekz @dextracker @kyu-c
 packages/contract-artifacts/ @dekz
 packages/protocol-utils/ @dekz

.github/CONTRIBUTING.md

@@ -89,15 +89,3 @@ A few of our coding conventions are not yet enforced by the linter/auto-formatte
 1.  If you _must_ cast a variable to any - try to type it back as fast as possible. (e.g., `const cw = ((zeroEx as any)._contractWrappers as ContractWrappers);`). This ensures subsequent code is type-safe.
 1.  Our enum conventions coincide with the recommended TypeScript conventions, using capitalized keys, and all-caps snake-case values. Eg `GetStats = 'GET_STATS'`
 1.  All public, exported methods/functions/classes must have associated Javadoc-style comments.
-
-### Fix `submit-coverage` CI failure
-
-If you simply fork the repo and then create a PR from it, your PR will fail the `submit-coverage` check on CI. This is because the 0x CircleCI configuration sets the `COVERALLS_REPO_TOKEN` environment variable to the token for `0xProject/0x-tools`, but when running the check against your fork the token needs to match your repo's name `your-username/0x-tools`.
-
-To facilitate this check, after creating your fork, but before creating the branch for your PR, do the following:
-
-1.  Log in to [coveralls.io](https://coveralls.io/), go to `Add Repos`, and enable your fork. Then go to the settings for that repo, and copy the `Repo Token` identifier.
-2.  Log in to [CircleCI](https://circleci.com/login), go to `Add Projects`, click the `Set Up Project` button corresponding to your fork, and then click `Start Building`. (Aside from step 3 below, no actual set up is needed, since it will use the `.circleci/config.yml` file in 0x-tools, so you can ignore all of the instruction/explanation given on the page with the `Start Building` button.)
-3.  In CircleCI, configure your project to add an environment variable, with name `COVERALLS_REPO_TOKEN`, and for the value paste in the `Repo Token` you copied in step 1.
-
-Now, when you push to your branch, CircleCI will automatically run all of the checks in your own instance, and the coverage check will work since it has the proper `Repo Token`, and the PR will magically refer to your own checks rather than running them in the 0x CircleCI instance.

.github/ISSUE_TEMPLATE.md

@@ -2,15 +2,13 @@
 
 <!--- Before submitting please check to see if this issue was already reported -->
 
-<!--- Prefix your issue title with the package name it relates to (e.g., `0x.js: ` or `general:`) -->
-
 ## Expected Behavior
 
 <!--- If you're describing a bug, tell us what should happen -->
 
 <!--- If you're suggesting a package change/improvement, tell us how it should work -->
 
-<!--- If you're suggesting a contract or protocol change/improvement, visit our ZEIPs repo -->
+<!--- If you're suggesting a contract or protocol change/improvement, visit our ZEIPs repo https://github.com/0xProject/ZEIPs -->
 
 ## Current Behavior
 
@@ -50,8 +48,8 @@
 | ------: | :------ |
 
 <!-- For example:
-|             `0x.js` | 2.0.4   |
-| `Exchange Contract` | v2      |
+|    `protocol-utils` | 2.0.4   |
+| `Exchange Contract` | v3      |
 -->
 
 | Network |
@@ -60,6 +58,6 @@
 
 <!-- For example:
 | mainnet |
-| kovan |
-| testrpc |
+| goerli |
+| development |
 -->

.github/autolabeler.yml

@@ -1,6 +1,2 @@
-python: ['python-packages']
-contracts: ['contracts']
-@0x/contract-addresses: ['packages/contract-addresses']
-@0x/order-utils: ['packages/order-utils']
-@0x/contract-artifacts: ['packages/contract-artifacts']
-@0x/contract-wrappers: ['packages/contract-wrappers']
+documentation: ['docs']
+liquidity integrations: ['contracts/zero-ex/contracts/src/transformers']

.github/dependabot.yml

@@ -0,0 +1,7 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: monthly
+    target-branch: "development"

.github/stale.yml

@@ -1,19 +0,0 @@
-# Number of days of inactivity before an issue becomes stale
-daysUntilStale: 30
-# Number of days of inactivity before a stale issue is closed
-daysUntilClose: 30
-# Issues with these labels will never be considered stale
-exemptLabels:
-    - pinned
-    - security
-# Label to use when marking an issue as stale
-staleLabel: stale
-# Comment to post when marking an issue as stale. Set to `false` to disable
-markComment: >
-    This issue has been automatically marked as stale because it has not had
-    recent activity. It will be closed if no further activity occurs. Thank you
-    for your contributions.
-# Comment to post when closing a stale issue. Set to `false` to disable
-closeComment: >
-    This issue has been automatically closed because no activity occured in 7 days after being marked as stale. If it's still relevant - feel free to reopen. Thank you
-    for your contributions.

.github/workflows/ci.yml

@@ -0,0 +1,108 @@
+name: Continuous Integration
+on:
+  push:
+    branches:
+      - main
+      - development
+  pull_request:
+
+jobs:
+  build:
+    name: Build and test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: recursive
+
+      - name: Setup Node
+        uses: actions/setup-node@v3
+        with:
+          node-version: "16"
+
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+
+      - name: Build solution
+        run: yarn build
+
+      - name: Lint typescript
+        run: yarn lint:ts
+
+      - name: Lint solidity
+        run: yarn lint:contracts
+
+      - name: Run prettier
+        run: yarn prettier:ci
+
+      - name: Check dependent packages have consistent versions
+        run: yarn deps_versions:ci
+
+      - name: Check diff in docs
+        run: yarn diff_md_docs:ci
+
+      - name: Check for broken links in markdown files
+        run: yarn test:links
+
+      - name: Test doc generation
+        run: yarn test:generate_docs:ci
+
+      - name: Test @0x/contracts-*
+        run: |
+                yarn wsrun \
+                  -p @0x/contracts-multisig \
+                  -p @0x/contracts-utils \
+                  -p @0x/contracts-exchange-libs \
+                  -p @0x/contracts-erc20 \
+                  -p @0x/contracts-erc721 \
+                  -p @0x/contracts-erc1155 \
+                  -p @0x/contracts-asset-proxy \
+                  -p @0x/contracts-broker \
+                  -p @0x/contracts-zero-ex \
+                  -m --serial -c test:ci
+
+      - name: Test local @0x/contracts-*
+        run: |
+                yarn wsrun \
+                  -p @0x/contracts-test-utils \
+                  -p @0x/contract-addresses \
+                  -p @0x/contract-artifacts \
+                  -p @0x/contract-wrappers-test \
+                  -p @0x/order-utils \
+                  -m --serial -c test:ci
+
+      - name: Add foundry
+        uses: foundry-rs/foundry-toolchain@v1
+        with:
+          version: nightly
+
+      - name: Run Forge build
+        working-directory: contracts/zero-ex
+        run: |
+          forge --version
+          forge build --sizes
+
+      - name: Run Forge tests
+        working-directory: contracts/zero-ex
+        env:
+          ARBITRUM_RPC_URL: ${{ secrets.ARBITRUM_RPC_URL }}
+          AVALANCHE_RPC_URL: ${{ secrets.AVALANCHE_RPC_URL }}
+          BSC_RPC_URL: ${{ secrets.BSC_RPC_URL }}
+          FANTOM_RPC_URL: ${{ secrets.FANTOM_RPC_URL }}
+          MAINNET_RPC_URL: ${{ secrets.MAINNET_RPC_URL }}
+          OPTIMISM_RPC_URL: ${{ secrets.OPTIMISM_RPC_URL }}
+          POLYGON_RPC_URL: ${{ secrets.POLYGON_RPC_URL }}
+        run: |
+          forge test -vvv --gas-report
+
+      - name: Run Forge coverage
+        working-directory: contracts/zero-ex
+        run: |
+          forge coverage --report lcov
+
+      - name: Upload the coverage report to Coveralls
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          base-path: ./contracts/zero-ex/
+          path-to-lcov: ./contracts/zero-ex/lcov.info

.github/workflows/stale.yml

@@ -0,0 +1,40 @@
+name: "Close stale issues and PRs"
+on:
+  schedule:
+    - cron: "0 8 * * 1-5" # This is in UTC.
+  # Do a dry-run (debug-only: true) whenever this workflow itself is changed.
+  pull_request:
+    paths:
+      - .github/workflows/stale.yml
+    types:
+      - opened
+      - synchronize
+
+permissions:
+  issues: write
+  pull-requests: write
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v7
+        with:
+          ascending: true # Spend API operations budget on older, more-likely-to-get-closed issues first
+          close-issue-message: "" # Leave no comment when closing
+          close-pr-message: "" # Leave no comment when closing
+          days-before-issue-stale: 30
+          days-before-pr-stale: 30
+          days-before-close: 14
+          debug-only: ${{ github.event_name == 'pull_request' }} # Dry-run when true.
+          exempt-issue-labels: bug,enhancement,feature,question
+          # No actual changes get made in debug-only mode, so we can raise the operations ceiling.
+          operations-per-run: ${{ github.event_name == 'pull_request' && 100 || 30}}
+          stale-issue-label: stale
+          stale-issue-message: "This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions."
+          stale-pr-label: stale
+          stale-pr-message: "This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions."
+          # Time immemorial when in debug-only mode (ie. on pull requests).
+          # `STALEBOT_START_DATE` otherwise.
+          # You can use this as a killswitch by setting `STALEBOT_START_DATE` in the far future.
+          start-date: ${{ github.event_name == 'pull_request' && '1970-01-01T00:00:00Z' || secrets.STALEBOT_START_DATE }} # ISO 8601 or RFC 2822

.gitignore

@@ -15,9 +15,6 @@ pids
 *.db
 *.sqlite
 
-# Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
-
 # Coverage directory used by tools like istanbul
 coverage
 
@@ -80,104 +77,22 @@ TODO.md
 .idea
 
 # generated contract artifacts/
-contracts/broker/generated-artifacts/
-contracts/broker/test/generated-artifacts/
-contracts/erc20-bridge-sampler/generated-artifacts/
-contracts/erc20-bridge-sampler/test/generated-artifacts/
-contracts/integrations/generated-artifacts/
-contracts/integrations/test/generated-artifacts/
-contracts/staking/generated-artifacts/
-contracts/staking/test/generated-artifacts/
-contracts/coordinator/generated-artifacts/
-contracts/coordinator/test/generated-artifacts/
-contracts/exchange/generated-artifacts/
-contracts/exchange/test/generated-artifacts/
-contracts/asset-proxy/generated-artifacts/
-contracts/asset-proxy/test/generated-artifacts/
-contracts/multisig/generated-artifacts/
-contracts/multisig/test/generated-artifacts/
-contracts/utils/generated-artifacts/
-contracts/utils/test/generated-artifacts/
-contracts/exchange-libs/generated-artifacts/
-contracts/exchange-libs/test/generated-artifacts/
-contracts/erc20/generated-artifacts/
-contracts/erc20/test/generated-artifacts/
-contracts/erc721/generated-artifacts/
-contracts/erc721/test/generated-artifacts/
-contracts/erc1155/generated-artifacts/
-contracts/erc1155/test/generated-artifacts/
-contracts/extensions/generated-artifacts/
-contracts/extensions/test/generated-artifacts/
-contracts/exchange-forwarder/generated-artifacts/
-contracts/exchange-forwarder/test/generated-artifacts/
-contracts/dev-utils/generated-artifacts/
-contracts/dev-utils/test/generated-artifacts/
-contracts/zero-ex/generated-artifacts/
-contracts/zero-ex/test/generated-artifacts/
-contracts/treasury/generated-artifacts/
-contracts/treasury/test/generated-artifacts/
-
-# generated truffle contract artifacts/
-contracts/broker/build/
-contracts/erc20-bridge-sampler/build/
-contracts/staking/build/
-contracts/coordinator/build/
-contracts/exchange/build/
-contracts/asset-proxy/build/
-contracts/multisig/build/
-contracts/utils/build/
-contracts/exchange-libs/build/
-contracts/erc20/build/
-contracts/erc721/build/
-contracts/erc1155/build/
-contracts/extensions/build/
-contracts/exchange-forwarder/build/
-contracts/dev-utils/build/
+generated-artifacts/
 
 # generated contract wrappers
-contracts/broker/generated-wrappers/
-contracts/broker/test/generated-wrappers/
-packages/python-contract-wrappers/generated/
-contracts/erc20-bridge-sampler/generated-wrappers/
-contracts/erc20-bridge-sampler/test/generated-wrappers/
-contracts/integrations/generated-wrappers/
-contracts/integrations/test/generated-wrappers/
-contracts/staking/generated-wrappers/
-contracts/staking/test/generated-wrappers/
-contracts/coordinator/generated-wrappers/
-contracts/coordinator/test/generated-wrappers/
-contracts/exchange/generated-wrappers/
-contracts/exchange/test/generated-wrappers/
-contracts/asset-proxy/generated-wrappers/
-contracts/asset-proxy/test/generated-wrappers/
-contracts/multisig/generated-wrappers/
-contracts/multisig/test/generated-wrappers/
-contracts/utils/generated-wrappers/
-contracts/utils/test/generated-wrappers/
-contracts/exchange-libs/generated-wrappers/
-contracts/exchange-libs/test/generated-wrappers/
-contracts/erc20/generated-wrappers/
-contracts/erc20/test/generated-wrappers/
-contracts/erc721/generated-wrappers/
-contracts/erc721/test/generated-wrappers/
-contracts/erc1155/generated-wrappers/
-contracts/erc1155/test/generated-wrappers/
-contracts/extensions/generated-wrappers/
-contracts/extensions/test/generated-wrappers/
-contracts/exchange-forwarder/generated-wrappers/
-contracts/exchange-forwarder/test/generated-wrappers/
-contracts/dev-utils/generated-wrappers/
-contracts/dev-utils/test/generated-wrappers/
-contracts/zero-ex/generated-wrappers/
-contracts/zero-ex/test/generated-wrappers/
-contracts/treasury/generated-wrappers/
-contracts/treasury/test/generated-wrappers/
+generated-wrappers/
+
+# forge std-lib
+contracts/zero-ex/contracts/deps/forge-std
 
 # foundry artifacts
-contracts/zero-ex/foundry-artifacts/
+foundry-artifacts/
 
-# foundry cache 
-contracts/zero-ex/foundry-cache/
+# foundry cache
+cache/
+
+#foundry output artifacts
+out/
 
 # typechain wrappers
 contracts/zero-ex/typechain-wrappers/

.husky/pre-commit

@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+. "$(dirname -- "$0")/_/husky.sh"
+
+npx lint-staged --no-stash

.prettierignore

@@ -1,88 +1,10 @@
 lib
+deps
 .nyc_output
-/contracts/broker/generated-wrappers
-/contracts/broker/test/generated-wrappers
-/contracts/broker/generated-artifacts
-/contracts/broker/test/generated-artifacts
-/contracts/integrations/generated-wrappers
-/contracts/integrations/test/generated-wrappers
-/contracts/integrations/generated-artifacts
-/contracts/integrations/test/generated-artifacts
-/contracts/staking/generated-wrappers
-/contracts/staking/test/generated-wrappers
-/contracts/staking/generated-artifacts
-/contracts/staking/test/generated-artifacts
-/contracts/coordinator/generated-wrappers
-/contracts/coordinator/test/generated-wrappers
-/contracts/coordinator/generated-artifacts
-/contracts/coordinator/test/generated-artifacts
-/contracts/exchange/generated-wrappers
-/contracts/exchange/test/generated-wrappers
-/contracts/exchange/generated-artifacts
-/contracts/exchange/test/generated-artifacts
-/contracts/asset-proxy/generated-wrappers
-/contracts/asset-proxy/test/generated-wrappers
-/contracts/asset-proxy/generated-artifacts
-/contracts/asset-proxy/test/generated-artifacts
-/contracts/multisig/generated-wrappers
-/contracts/multisig/test/generated-wrappers
-/contracts/multisig/generated-artifacts
-/contracts/multisig/test/generated-artifacts
-/contracts/utils/generated-wrappers
-/contracts/utils/test/generated-wrappers
-/contracts/utils/generated-artifacts
-/contracts/utils/test/generated-artifacts
-/contracts/exchange-libs/generated-wrappers
-/contracts/exchange-libs/test/generated-wrappers
-/contracts/exchange-libs/generated-artifacts
-/contracts/exchange-libs/test/generated-artifacts
-/contracts/erc20/generated-wrappers
-/contracts/erc20/test/generated-wrappers
-/contracts/erc20/generated-artifacts
-/contracts/erc20/test/generated-artifacts
-/contracts/erc721/generated-wrappers
-/contracts/erc721/test/generated-wrappers
-/contracts/erc721/generated-artifacts
-/contracts/erc721/test/generated-artifacts
-/contracts/erc1155/generated-wrappers
-/contracts/erc1155/test/generated-wrappers
-/contracts/erc1155/generated-artifacts
-/contracts/erc1155/test/generated-artifacts
-/contracts/extensions/generated-wrappers
-/contracts/extensions/test/generated-wrappers
-/contracts/extensions/generated-artifacts
-/contracts/extensions/test/generated-artifacts
-/contracts/exchange-forwarder/generated-wrappers
-/contracts/exchange-forwarder/test/generated-wrappers
-/contracts/exchange-forwarder/generated-artifacts
-/contracts/exchange-forwarder/test/generated-artifacts
-/contracts/dev-utils/generated-wrappers
-/contracts/dev-utils/test/generated-wrappers
-/contracts/dev-utils/generated-artifacts
-/contracts/dev-utils/test/generated-artifacts
-/contracts/zero-ex/foundry-artifacts
-/contracts/zero-ex/generated-wrappers
-/contracts/zero-ex/test/generated-wrappers
-/contracts/zero-ex/generated-artifacts
-/contracts/zero-ex/test/generated-artifacts
-/contracts/treasury/generated-wrappers
-/contracts/treasury/test/generated-wrappers
-/contracts/treasury/generated-artifacts
-/contracts/treasury/test/generated-artifacts
-/contracts/staking/build/
-/contracts/coordinator/build/
-/contracts/exchange/build/
-/contracts/asset-proxy/build/
-/contracts/multisig/build/
-/contracts/utils/build/
-/contracts/exchange-libs/build/
-/contracts/erc20/build/
-/contracts/erc721/build/
-/contracts/erc1155/build/
-/contracts/extensions/build/
-/contracts/exchange-forwarder/build/
-/packages/asset-swapper/
-/packages/contract-wrappers/src/generated-wrappers/
+generated-artifacts/
+generated-wrappers/
+foundry-artifacts/
+out/
+cache/
 package.json
-packages/*/docs
-docs/
+packages

.solhint.json

@@ -7,7 +7,7 @@
         "avoid-tx-origin": "warn",
         "code-complexity": "off",
         "const-name-snakecase": "error",
-        "function-max-lines": "off",
+        "function-max-lines": ["error", 350],
         "max-line-length": ["error", 120],
         "no-inline-assembly": "off",
         "quotes": ["error", "double"],

.solhintignore

@@ -1 +1,9 @@
 contracts/erc20/contracts/src/ZRXToken.sol
+node_modules/
+lib
+deps
+generated-artifacts/
+generated-wrappers/
+foundry-artifacts/
+out/
+cache/

README.md

@@ -8,8 +8,7 @@ This repository is a monorepo including the 0x protocol smart contracts and nume
 
 [website-url]: https://0x.org
 
-[![CircleCI](https://circleci.com/gh/0xProject/protocol.svg?style=svg&circle-token=61bf7cd8c9b4e11b132089dfcffdd1be277d1e0c)](https://circleci.com/gh/0xProject/protocool)
-[![Coverage Status](https://coveralls.io/repos/github/0xProject/0x-monorepo/badge.svg?branch=development)](https://coveralls.io/github/0xProject/0x-monorepo?branch=development)
+[![Coverage Status](https://coveralls.io/repos/github/0xProject/protocol/badge.svg?branch=development)](https://coveralls.io/github/0xProject/protocol?branch=development)
 [![Discord](https://img.shields.io/badge/chat-discord.chat-yellow.svg?style=flat)](https://discordapp.com/invite/d3FTX3M)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 
@@ -54,7 +53,7 @@ You can include those by prepending the `@0x/typescript-typings` package to your
 
 We strongly recommend that the community help us make improvements and determine the future direction of the protocol. To report bugs within this package, please create an issue in this repository.
 
-#### Read our [contribution guidelines](./CONTRIBUTING.md).
+#### Read our [contribution guidelines](.github/CONTRIBUTING.md).
 
 ### Install dependencies
 

contracts/erc20/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1675210931,
+        "version": "3.3.57",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1675105183,
+        "version": "3.3.56",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1674517560,
+        "version": "3.3.55",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1670879498,
+        "version": "3.3.54",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1669235113,
         "version": "3.3.53",

contracts/erc20/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.3.57 - _February 1, 2023_
+
+    * Dependencies updated
+
+## v3.3.56 - _January 30, 2023_
+
+    * Dependencies updated
+
+## v3.3.55 - _January 23, 2023_
+
+    * Dependencies updated
+
+## v3.3.54 - _December 12, 2022_
+
+    * Dependencies updated
+
 ## v3.3.53 - _November 23, 2022_
 
     * Dependencies updated

contracts/erc20/README.md

@@ -20,7 +20,7 @@ We strongly recommend that the community help us make improvements and determine
 
 For proposals regarding the 0x protocol's smart contract architecture, message format, or additional functionality, go to the [0x Improvement Proposals (ZEIPs)](https://github.com/0xProject/ZEIPs) repository and follow the contribution guidelines provided therein.
 
-Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
+Please read our [contribution guidelines](../../.github/CONTRIBUTING.md) before getting started.
 
 ### Install Dependencies
 

contracts/erc20/contracts/src/v06/WETH9V06.sol

@@ -0,0 +1,755 @@
+// Copyright (C) 2015, 2016, 2017 Dapphub
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+// solhint-disable
+pragma solidity ^0.6.0;
+
+contract WETH9V06 {
+    string public name = "Wrapped Ether";
+    string public symbol = "WETH";
+    uint8 public decimals = 18;
+
+    event Approval(address indexed _owner, address indexed _spender, uint _value);
+    event Transfer(address indexed _from, address indexed _to, uint _value);
+    event Deposit(address indexed _owner, uint _value);
+    event Withdrawal(address indexed _owner, uint _value);
+
+    mapping(address => uint) public balanceOf;
+    mapping(address => mapping(address => uint)) public allowance;
+
+    receive() external payable {
+        deposit();
+    }
+
+    function deposit() public payable {
+        balanceOf[msg.sender] += msg.value;
+        emit Deposit(msg.sender, msg.value);
+    }
+
+    function withdraw(uint wad) public {
+        require(balanceOf[msg.sender] >= wad);
+        balanceOf[msg.sender] -= wad;
+        msg.sender.transfer(wad);
+        emit Withdrawal(msg.sender, wad);
+    }
+
+    function totalSupply() public view returns (uint) {
+        return address(this).balance;
+    }
+
+    function approve(address guy, uint wad) public returns (bool) {
+        allowance[msg.sender][guy] = wad;
+        emit Approval(msg.sender, guy, wad);
+        return true;
+    }
+
+    function transfer(address dst, uint wad) public returns (bool) {
+        return transferFrom(msg.sender, dst, wad);
+    }
+
+    function transferFrom(address src, address dst, uint wad) public returns (bool) {
+        require(balanceOf[src] >= wad);
+
+        if (src != msg.sender && allowance[src][msg.sender] != uint(-1)) {
+            require(allowance[src][msg.sender] >= wad);
+            allowance[src][msg.sender] -= wad;
+        }
+
+        balanceOf[src] -= wad;
+        balanceOf[dst] += wad;
+
+        emit Transfer(src, dst, wad);
+
+        return true;
+    }
+}
+
+/*
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
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+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
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+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
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+changed, so that their problems will not be attributed erroneously to
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+
+  Some devices are designed to deny users access to install or run
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+  The precise terms and conditions for copying, distribution and
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+
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+<http://www.gnu.org/licenses/>.
+
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+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
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+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+
+*/

contracts/erc20/contracts/src/v08/IERC20TokenV08.sol

@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.8.0;
+
+interface IERC20TokenV08 {
+    event Transfer(address indexed from, address indexed to, uint256 value);
+
+    event Approval(address indexed owner, address indexed spender, uint256 value);
+
+    /// @dev send `value` token to `to` from `msg.sender`
+    /// @param to The address of the recipient
+    /// @param value The amount of token to be transferred
+    /// @return True if transfer was successful
+    function transfer(address to, uint256 value) external returns (bool);
+
+    /// @dev send `value` token to `to` from `from` on the condition it is approved by `from`
+    /// @param from The address of the sender
+    /// @param to The address of the recipient
+    /// @param value The amount of token to be transferred
+    /// @return True if transfer was successful
+    function transferFrom(address from, address to, uint256 value) external returns (bool);
+
+    /// @dev `msg.sender` approves `spender` to spend `value` tokens
+    /// @param spender The address of the account able to transfer the tokens
+    /// @param value The amount of wei to be approved for transfer
+    /// @return Always true if the call has enough gas to complete execution
+    function approve(address spender, uint256 value) external returns (bool);
+
+    /// @dev Query total supply of token
+    /// @return Total supply of token
+    function totalSupply() external view returns (uint256);
+
+    /// @dev Get the balance of `owner`.
+    /// @param owner The address from which the balance will be retrieved
+    /// @return Balance of owner
+    function balanceOf(address owner) external view returns (uint256);
+
+    /// @dev Get the allowance for `spender` to spend from `owner`.
+    /// @param owner The address of the account owning tokens
+    /// @param spender The address of the account able to transfer the tokens
+    /// @return Amount of remaining tokens allowed to spent
+    function allowance(address owner, address spender) external view returns (uint256);
+
+    /// @dev Get the number of decimals this token has.
+    function decimals() external view returns (uint8);
+}

contracts/erc20/contracts/src/v08/IEtherTokenV08.sol

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 /*
 
-  Copyright 2022 ZeroEx Intl.
+  Copyright 2020 ZeroEx Intl.
 
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
@@ -17,14 +17,14 @@
 
 */
 
-pragma solidity ^0.6;
+pragma solidity ^0.8.0;
 
-import "forge-std/Test.sol";
+import "./IERC20TokenV08.sol";
 
-contract ContractTest is Test {
-    function setUp() public {}
+interface IEtherTokenV08 is IERC20TokenV08 {
+    /// @dev Wrap ether.
+    function deposit() external payable;
 
-    function testExample() public {
-        assertTrue(true);
-    }
+    /// @dev Unwrap ether.
+    function withdraw(uint256 amount) external;
 }

contracts/erc20/contracts/src/v08/LibERC20TokenV08.sol

@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.8.0;
+
+import "@0x/contracts-utils/contracts/src/v08/errors/LibRichErrorsV08.sol";
+import "@0x/contracts-utils/contracts/src/v08/LibBytesV08.sol";
+import "./IERC20TokenV08.sol";
+
+library LibERC20TokenV08 {
+    bytes private constant DECIMALS_CALL_DATA = hex"313ce567";
+
+    /// @dev Calls `IERC20TokenV08(token).approve()`.
+    ///      Reverts if the return data is invalid or the call reverts.
+    /// @param token The address of the token contract.
+    /// @param spender The address that receives an allowance.
+    /// @param allowance The allowance to set.
+    function compatApprove(IERC20TokenV08 token, address spender, uint256 allowance) internal {
+        bytes memory callData = abi.encodeCall(token.approve, (spender, allowance));
+        _callWithOptionalBooleanResult(address(token), callData);
+    }
+
+    /// @dev Calls `IERC20TokenV08(token).approve()` and sets the allowance to the
+    ///      maximum if the current approval is not already >= an amount.
+    ///      Reverts if the return data is invalid or the call reverts.
+    /// @param token The address of the token contract.
+    /// @param spender The address that receives an allowance.
+    /// @param amount The minimum allowance needed.
+    function approveIfBelow(IERC20TokenV08 token, address spender, uint256 amount) internal {
+        if (token.allowance(address(this), spender) < amount) {
+            compatApprove(token, spender, type(uint256).max);
+        }
+    }
+
+    /// @dev Calls `IERC20TokenV08(token).transfer()`.
+    ///      Reverts if the return data is invalid or the call reverts.
+    /// @param token The address of the token contract.
+    /// @param to The address that receives the tokens
+    /// @param amount Number of tokens to transfer.
+    function compatTransfer(IERC20TokenV08 token, address to, uint256 amount) internal {
+        bytes memory callData = abi.encodeCall(token.transfer, (to, amount));
+        _callWithOptionalBooleanResult(address(token), callData);
+    }
+
+    /// @dev Calls `IERC20TokenV08(token).transferFrom()`.
+    ///      Reverts if the return data is invalid or the call reverts.
+    /// @param token The address of the token contract.
+    /// @param from The owner of the tokens.
+    /// @param to The address that receives the tokens
+    /// @param amount Number of tokens to transfer.
+    function compatTransferFrom(IERC20TokenV08 token, address from, address to, uint256 amount) internal {
+        bytes memory callData = abi.encodeCall(token.transferFrom, (from, to, amount));
+        _callWithOptionalBooleanResult(address(token), callData);
+    }
+
+    /// @dev Retrieves the number of decimals for a token.
+    ///      Returns `18` if the call reverts.
+    /// @param token The address of the token contract.
+    /// @return tokenDecimals The number of decimals places for the token.
+    function compatDecimals(IERC20TokenV08 token) internal view returns (uint8 tokenDecimals) {
+        tokenDecimals = 18;
+        (bool didSucceed, bytes memory resultData) = address(token).staticcall(DECIMALS_CALL_DATA);
+        if (didSucceed && resultData.length >= 32) {
+            tokenDecimals = abi.decode(resultData, (uint8));
+        }
+    }
+
+    /// @dev Retrieves the allowance for a token, owner, and spender.
+    ///      Returns `0` if the call reverts.
+    /// @param token The address of the token contract.
+    /// @param owner The owner of the tokens.
+    /// @param spender The address the spender.
+    /// @return allowance_ The allowance for a token, owner, and spender.
+    function compatAllowance(
+        IERC20TokenV08 token,
+        address owner,
+        address spender
+    ) internal view returns (uint256 allowance_) {
+        (bool didSucceed, bytes memory resultData) = address(token).staticcall(
+            abi.encodeCall(token.allowance, (owner, spender))
+        );
+        if (didSucceed && resultData.length >= 32) {
+            allowance_ = abi.decode(resultData, (uint256));
+        }
+    }
+
+    /// @dev Retrieves the balance for a token owner.
+    ///      Returns `0` if the call reverts.
+    /// @param token The address of the token contract.
+    /// @param owner The owner of the tokens.
+    /// @return balance The token balance of an owner.
+    function compatBalanceOf(IERC20TokenV08 token, address owner) internal view returns (uint256 balance) {
+        (bool didSucceed, bytes memory resultData) = address(token).staticcall(
+            abi.encodeCall(token.balanceOf, (owner))
+        );
+        if (didSucceed && resultData.length >= 32) {
+            balance = abi.decode(resultData, (uint256));
+        }
+    }
+
+    /// @dev Executes a call on address `target` with calldata `callData`
+    ///      and asserts that either nothing was returned or a single boolean
+    ///      was returned equal to `true`.
+    /// @param target The call target.
+    /// @param callData The abi-encoded call data.
+    function _callWithOptionalBooleanResult(address target, bytes memory callData) private {
+        (bool didSucceed, bytes memory resultData) = target.call(callData);
+        // Revert if the call reverted.
+        if (!didSucceed) {
+            LibRichErrorsV08.rrevert(resultData);
+        }
+        // If we get back 0 returndata, this may be a non-standard ERC-20 that
+        // does not return a boolean. Check that it at least contains code.
+        if (resultData.length == 0) {
+            require(target.code.length > 0, "invalid token address, contains no code");
+            return;
+        }
+        // If we get back at least 32 bytes, we know the target address
+        // contains code, and we assume it is a token that returned a boolean
+        // success value, which must be true.
+        if (resultData.length >= 32) {
+            if (!abi.decode(resultData, (bool))) {
+                LibRichErrorsV08.rrevert(resultData);
+            }
+        }
+        // If 0 < returndatasize < 32, the target is a contract, but not a
+        // valid token.
+        LibRichErrorsV08.rrevert(resultData);
+    }
+}

contracts/erc20/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-erc20",
-    "version": "3.3.53",
+    "version": "3.3.57",
     "engines": {
         "node": ">=6.12"
     },
@@ -15,7 +15,6 @@
         "pre_build": "run-s compile contracts:gen generate_contract_wrappers contracts:copy",
         "test": "yarn run_mocha",
         "rebuild_and_test": "run-s build test",
-        "test:coverage": "SOLIDITY_COVERAGE=true run-s build run_mocha coverage:report:text coverage:report:lcov",
         "test:profiler": "SOLIDITY_PROFILER=true run-s build run_mocha profiler:report:html",
         "test:trace": "SOLIDITY_REVERT_TRACE=true run-s build run_mocha",
         "run_mocha": "mocha --require source-map-support/register --require make-promises-safe 'lib/test/**/*.js' --timeout 100000 --bail --exit",
@@ -25,11 +24,7 @@
         "generate_contract_wrappers": "abi-gen --debug --abis  ${npm_package_config_abis} --output test/generated-wrappers --backend ethers",
         "lint": "eslint src test",
         "fix": "eslint --fix src test",
-        "coverage:report:text": "istanbul report text",
-        "coverage:report:html": "istanbul report html && open coverage/index.html",
-        "profiler:report:html": "istanbul report html && open coverage/index.html",
-        "coverage:report:lcov": "istanbul report lcov",
-        "test:circleci": "yarn test",
+        "test:ci": "yarn test",
         "contracts:gen": "contracts-gen generate",
         "contracts:copy": "contracts-gen copy",
         "docs:md": "ts-doc-gen --sourceDir='$PROJECT_FILES' --output=$MD_FILE_DIR --fileExtension=mdx --tsconfig=./typedoc-tsconfig.json",
@@ -37,7 +32,7 @@
     },
     "config": {
         "publicInterfaceContracts": "DummyERC20Token,ERC20Token,WETH9,ZRXToken,DummyNoReturnERC20Token,DummyMultipleReturnERC20Token",
-        "abis": "./test/generated-artifacts/@(DummyERC20Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|ERC20Token|IERC20Token|IERC20TokenV06|IEtherToken|IEtherTokenV06|LibERC20Token|LibERC20TokenV06|MintableERC20Token|TestLibERC20Token|TestLibERC20TokenTarget|UnlimitedAllowanceERC20Token|UntransferrableDummyERC20Token|WETH9|ZRXToken).json",
+        "abis": "./test/generated-artifacts/@(DummyERC20Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|ERC20Token|IERC20Token|IERC20TokenV06|IERC20TokenV08|IEtherToken|IEtherTokenV06|IEtherTokenV08|LibERC20Token|LibERC20TokenV06|LibERC20TokenV08|MintableERC20Token|TestLibERC20Token|TestLibERC20TokenTarget|UnlimitedAllowanceERC20Token|UntransferrableDummyERC20Token|WETH9|WETH9V06|ZRXToken).json",
         "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
     },
     "repository": {
@@ -52,8 +47,8 @@
     "devDependencies": {
         "@0x/abi-gen": "^5.8.1",
         "@0x/contracts-gen": "^2.0.48",
-        "@0x/contracts-test-utils": "^5.4.43",
-        "@0x/contracts-utils": "^4.8.34",
+        "@0x/contracts-test-utils": "^5.4.47",
+        "@0x/contracts-utils": "^4.8.38",
         "@0x/dev-utils": "^5.0.0",
         "@0x/sol-compiler": "^4.8.2",
         "@0x/ts-doc-gen": "^0.0.28",

contracts/erc20/test/artifacts.ts

@@ -11,16 +11,20 @@ import * as DummyNoReturnERC20Token from '../test/generated-artifacts/DummyNoRet
 import * as ERC20Token from '../test/generated-artifacts/ERC20Token.json';
 import * as IERC20Token from '../test/generated-artifacts/IERC20Token.json';
 import * as IERC20TokenV06 from '../test/generated-artifacts/IERC20TokenV06.json';
+import * as IERC20TokenV08 from '../test/generated-artifacts/IERC20TokenV08.json';
 import * as IEtherToken from '../test/generated-artifacts/IEtherToken.json';
 import * as IEtherTokenV06 from '../test/generated-artifacts/IEtherTokenV06.json';
+import * as IEtherTokenV08 from '../test/generated-artifacts/IEtherTokenV08.json';
 import * as LibERC20Token from '../test/generated-artifacts/LibERC20Token.json';
 import * as LibERC20TokenV06 from '../test/generated-artifacts/LibERC20TokenV06.json';
+import * as LibERC20TokenV08 from '../test/generated-artifacts/LibERC20TokenV08.json';
 import * as MintableERC20Token from '../test/generated-artifacts/MintableERC20Token.json';
 import * as TestLibERC20Token from '../test/generated-artifacts/TestLibERC20Token.json';
 import * as TestLibERC20TokenTarget from '../test/generated-artifacts/TestLibERC20TokenTarget.json';
 import * as UnlimitedAllowanceERC20Token from '../test/generated-artifacts/UnlimitedAllowanceERC20Token.json';
 import * as UntransferrableDummyERC20Token from '../test/generated-artifacts/UntransferrableDummyERC20Token.json';
 import * as WETH9 from '../test/generated-artifacts/WETH9.json';
+import * as WETH9V06 from '../test/generated-artifacts/WETH9V06.json';
 import * as ZRXToken from '../test/generated-artifacts/ZRXToken.json';
 export const artifacts = {
     ERC20Token: ERC20Token as ContractArtifact,
@@ -34,6 +38,10 @@ export const artifacts = {
     IERC20TokenV06: IERC20TokenV06 as ContractArtifact,
     IEtherTokenV06: IEtherTokenV06 as ContractArtifact,
     LibERC20TokenV06: LibERC20TokenV06 as ContractArtifact,
+    WETH9V06: WETH9V06 as ContractArtifact,
+    IERC20TokenV08: IERC20TokenV08 as ContractArtifact,
+    IEtherTokenV08: IEtherTokenV08 as ContractArtifact,
+    LibERC20TokenV08: LibERC20TokenV08 as ContractArtifact,
     DummyERC20Token: DummyERC20Token as ContractArtifact,
     DummyMultipleReturnERC20Token: DummyMultipleReturnERC20Token as ContractArtifact,
     DummyNoReturnERC20Token: DummyNoReturnERC20Token as ContractArtifact,

contracts/erc20/test/global_hooks.ts

@@ -1,19 +0,0 @@
-import { env, EnvVars } from '@0x/dev-utils';
-
-import { coverage, profiler, provider } from '@0x/contracts-test-utils';
-import { providerUtils } from '@0x/utils';
-
-before('start web3 provider', () => {
-    providerUtils.startProviderEngine(provider);
-});
-after('generate coverage report', async () => {
-    if (env.parseBoolean(EnvVars.SolidityCoverage)) {
-        const coverageSubprovider = coverage.getCoverageSubproviderSingleton();
-        await coverageSubprovider.writeCoverageAsync();
-    }
-    if (env.parseBoolean(EnvVars.SolidityProfiler)) {
-        const profilerSubprovider = profiler.getProfilerSubproviderSingleton();
-        await profilerSubprovider.writeProfilerOutputAsync();
-    }
-    provider.stop();
-});

contracts/erc20/test/wrappers.ts

@@ -9,14 +9,18 @@ export * from '../test/generated-wrappers/dummy_no_return_erc20_token';
 export * from '../test/generated-wrappers/erc20_token';
 export * from '../test/generated-wrappers/i_erc20_token';
 export * from '../test/generated-wrappers/i_erc20_token_v06';
+export * from '../test/generated-wrappers/i_erc20_token_v08';
 export * from '../test/generated-wrappers/i_ether_token';
 export * from '../test/generated-wrappers/i_ether_token_v06';
+export * from '../test/generated-wrappers/i_ether_token_v08';
 export * from '../test/generated-wrappers/lib_erc20_token';
 export * from '../test/generated-wrappers/lib_erc20_token_v06';
+export * from '../test/generated-wrappers/lib_erc20_token_v08';
 export * from '../test/generated-wrappers/mintable_erc20_token';
 export * from '../test/generated-wrappers/test_lib_erc20_token';
 export * from '../test/generated-wrappers/test_lib_erc20_token_target';
 export * from '../test/generated-wrappers/unlimited_allowance_erc20_token';
 export * from '../test/generated-wrappers/untransferrable_dummy_erc20_token';
 export * from '../test/generated-wrappers/weth9';
+export * from '../test/generated-wrappers/weth9v06';
 export * from '../test/generated-wrappers/zrx_token';

contracts/erc20/truffle-config.js

@@ -1,96 +0,0 @@
-/**
- * Use this file to configure your truffle project. It's seeded with some
- * common settings for different networks and features like migrations,
- * compilation and testing. Uncomment the ones you need or modify
- * them to suit your project as necessary.
- *
- * More information about configuration can be found at:
- *
- * truffleframework.com/docs/advanced/configuration
- *
- * To deploy via Infura you'll need a wallet provider (like truffle-hdwallet-provider)
- * to sign your transactions before they're sent to a remote public node. Infura accounts
- * are available for free at: infura.io/register.
- *
- * You'll also need a mnemonic - the twelve word phrase the wallet uses to generate
- * public/private key pairs. If you're publishing your code to GitHub make sure you load this
- * phrase from a file you've .gitignored so it doesn't accidentally become public.
- *
- */
-
-// const HDWalletProvider = require('truffle-hdwallet-provider');
-// const infuraKey = "fj4jll3k.....";
-//
-// const fs = require('fs');
-// const mnemonic = fs.readFileSync(".secret").toString().trim();
-
-module.exports = {
-    /**
-     * Networks define how you connect to your ethereum client and let you set the
-     * defaults web3 uses to send transactions. If you don't specify one truffle
-     * will spin up a development blockchain for you on port 9545 when you
-     * run `develop` or `test`. You can ask a truffle command to use a specific
-     * network from the command line, e.g
-     *
-     * $ truffle test --network <network-name>
-     */
-
-    networks: {
-        // Useful for testing. The `development` name is special - truffle uses it by default
-        // if it's defined here and no other network is specified at the command line.
-        // You should run a client (like ganache-cli, geth or parity) in a separate terminal
-        // tab if you use this network and you must also set the `host`, `port` and `network_id`
-        // options below to some value.
-        //
-        // development: {
-        //  host: "127.0.0.1",     // Localhost (default: none)
-        //  port: 8545,            // Standard Ethereum port (default: none)
-        //  network_id: "*",       // Any network (default: none)
-        // },
-        // Another network with more advanced options...
-        // advanced: {
-        // port: 8777,             // Custom port
-        // network_id: 1342,       // Custom network
-        // gas: 8500000,           // Gas sent with each transaction (default: ~6700000)
-        // gasPrice: 20000000000,  // 20 gwei (in wei) (default: 100 gwei)
-        // from: <address>,        // Account to send txs from (default: accounts[0])
-        // websockets: true        // Enable EventEmitter interface for web3 (default: false)
-        // },
-        // Useful for deploying to a public network.
-        // NB: It's important to wrap the provider as a function.
-        // ropsten: {
-        // provider: () => new HDWalletProvider(mnemonic, `https://ropsten.infura.io/v3/YOUR-PROJECT-ID`),
-        // network_id: 3,       // Ropsten's id
-        // gas: 5500000,        // Ropsten has a lower block limit than mainnet
-        // confirmations: 2,    // # of confs to wait between deployments. (default: 0)
-        // timeoutBlocks: 200,  // # of blocks before a deployment times out  (minimum/default: 50)
-        // skipDryRun: true     // Skip dry run before migrations? (default: false for public nets )
-        // },
-        // Useful for private networks
-        // private: {
-        // provider: () => new HDWalletProvider(mnemonic, `https://network.io`),
-        // network_id: 2111,   // This network is yours, in the cloud.
-        // production: true    // Treats this network as if it was a public net. (default: false)
-        // }
-    },
-
-    // Set default mocha options here, use special reporters etc.
-    mocha: {
-        // timeout: 100000
-    },
-
-    // Configure your compilers
-    compilers: {
-        solc: {
-            version: '0.5.9',
-            settings: {
-                evmVersion: 'constantinople',
-                optimizer: {
-                    enabled: true,
-                    runs: 1000000,
-                    details: { yul: true, deduplicate: true, cse: true, constantOptimizer: true },
-                },
-            },
-        },
-    },
-};

contracts/erc20/tsconfig.json

@@ -15,16 +15,20 @@
         "test/generated-artifacts/ERC20Token.json",
         "test/generated-artifacts/IERC20Token.json",
         "test/generated-artifacts/IERC20TokenV06.json",
+        "test/generated-artifacts/IERC20TokenV08.json",
         "test/generated-artifacts/IEtherToken.json",
         "test/generated-artifacts/IEtherTokenV06.json",
+        "test/generated-artifacts/IEtherTokenV08.json",
         "test/generated-artifacts/LibERC20Token.json",
         "test/generated-artifacts/LibERC20TokenV06.json",
+        "test/generated-artifacts/LibERC20TokenV08.json",
         "test/generated-artifacts/MintableERC20Token.json",
         "test/generated-artifacts/TestLibERC20Token.json",
         "test/generated-artifacts/TestLibERC20TokenTarget.json",
         "test/generated-artifacts/UnlimitedAllowanceERC20Token.json",
         "test/generated-artifacts/UntransferrableDummyERC20Token.json",
         "test/generated-artifacts/WETH9.json",
+        "test/generated-artifacts/WETH9V06.json",
         "test/generated-artifacts/ZRXToken.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]

contracts/test-utils/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1675210931,
+        "version": "5.4.47",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1675105183,
+        "version": "5.4.46",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1674517560,
+        "version": "5.4.45",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1670879498,
+        "version": "5.4.44",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1669235113,
         "version": "5.4.43",

contracts/test-utils/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v5.4.47 - _February 1, 2023_
+
+    * Dependencies updated
+
+## v5.4.46 - _January 30, 2023_
+
+    * Dependencies updated
+
+## v5.4.45 - _January 23, 2023_
+
+    * Dependencies updated
+
+## v5.4.44 - _December 12, 2022_
+
+    * Dependencies updated
+
 ## v5.4.43 - _November 23, 2022_
 
     * Dependencies updated

contracts/test-utils/README.md

@@ -24,7 +24,7 @@ import {
 
 We strongly recommend that the community help us make improvements and determine the future direction of the protocol. To report bugs within this package, please create an issue in this repository.
 
-Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
+Please read our [contribution guidelines](../../.github/CONTRIBUTING.md) before getting started.
 
 ### Install Dependencies
 

contracts/test-utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-test-utils",
-    "version": "5.4.43",
+    "version": "5.4.47",
     "engines": {
         "node": ">=6.12"
     },
@@ -13,16 +13,11 @@
         "build": "tsc -b",
         "build:ci": "yarn build",
         "test": "yarn run_mocha",
-        "test:coverage": "run-s build run_mocha coverage:report:text coverage:report:lcov",
         "run_mocha": "mocha --require source-map-support/register --require make-promises-safe 'lib/test/**/*.js' --timeout 100000 --bail --exit",
         "clean": "shx rm -rf lib",
         "lint": "eslint src test",
         "fix": "eslint --fix src test",
-        "coverage:report:text": "istanbul report text",
-        "coverage:report:html": "istanbul report html && open coverage/index.html",
-        "profiler:report:html": "istanbul report html && open coverage/index.html",
-        "coverage:report:lcov": "istanbul report lcov",
-        "test:circleci": "yarn test"
+        "test:ci": "yarn test"
     },
     "repository": {
         "type": "git",
@@ -46,11 +41,10 @@
     "dependencies": {
         "@0x/assert": "^3.0.35",
         "@0x/base-contract": "^7.0.0",
-        "@0x/contract-addresses": "^7.4.1",
+        "@0x/contract-addresses": "^8.0.3",
         "@0x/dev-utils": "^5.0.0",
         "@0x/json-schemas": "^6.4.4",
         "@0x/order-utils": "^10.4.28",
-        "@0x/sol-coverage": "^4.0.46",
         "@0x/sol-profiler": "^4.1.36",
         "@0x/sol-trace": "^3.0.46",
         "@0x/subproviders": "^7.0.0",

contracts/test-utils/src/coverage.ts

@@ -1,26 +0,0 @@
-import { devConstants } from '@0x/dev-utils';
-import { CoverageSubprovider, SolCompilerArtifactAdapter } from '@0x/sol-coverage';
-let coverageSubprovider: CoverageSubprovider;
-
-export const coverage = {
-    getCoverageSubproviderSingleton(): CoverageSubprovider {
-        if (coverageSubprovider === undefined) {
-            coverageSubprovider = coverage._getCoverageSubprovider();
-        }
-        return coverageSubprovider;
-    },
-    _getCoverageSubprovider(): CoverageSubprovider {
-        const defaultFromAddress = devConstants.TESTRPC_FIRST_ADDRESS;
-        const solCompilerArtifactAdapter = new SolCompilerArtifactAdapter();
-        const coverageSubproviderConfig = {
-            isVerbose: true,
-            ignoreFilesGlobs: ['**/node_modules/**', '**/interfaces/**', '**/test/**'],
-        };
-        const subprovider = new CoverageSubprovider(
-            solCompilerArtifactAdapter,
-            defaultFromAddress,
-            coverageSubproviderConfig,
-        );
-        return subprovider;
-    },
-};

contracts/test-utils/src/global_hooks.ts

@@ -1,15 +0,0 @@
-import { env, EnvVars } from '@0x/dev-utils';
-
-import { coverage } from './coverage';
-import { profiler } from './profiler';
-
-after('generate coverage report', async () => {
-    if (env.parseBoolean(EnvVars.SolidityCoverage)) {
-        const coverageSubprovider = coverage.getCoverageSubproviderSingleton();
-        await coverageSubprovider.writeCoverageAsync();
-    }
-    if (env.parseBoolean(EnvVars.SolidityProfiler)) {
-        const profilerSubprovider = profiler.getProfilerSubproviderSingleton();
-        await profilerSubprovider.writeProfilerOutputAsync();
-    }
-});

contracts/test-utils/src/index.ts

@@ -20,7 +20,6 @@ export { signingUtils } from './signing_utils';
 export { orderUtils } from './order_utils';
 export { typeEncodingUtils } from './type_encoding_utils';
 export { profiler } from './profiler';
-export { coverage } from './coverage';
 export { Web3ProviderEngine } from '@0x/subproviders';
 export { randomAddress } from './address_utils';
 export { OrderFactory } from './order_factory';

contracts/test-utils/src/types.ts

@@ -90,7 +90,6 @@ export enum ContractName {
     DummyERC721Token = 'DummyERC721Token',
     TestLibBytes = 'TestLibBytes',
     TestWallet = 'TestWallet',
-    Authorizable = 'Authorizable',
     Whitelist = 'Whitelist',
     Forwarder = 'Forwarder',
     BalanceThresholdFilter = 'BalanceThresholdFilter',

contracts/test-utils/src/web3_wrapper.ts

@@ -5,7 +5,6 @@ import { Web3Wrapper } from '@0x/web3-wrapper';
 import * as _ from 'lodash';
 
 import { constants } from './constants';
-import { coverage } from './coverage';
 import { profiler } from './profiler';
 import { revertTrace } from './revert_trace';
 
@@ -39,11 +38,7 @@ const enabledSubproviderCount = _.filter(
     _.identity.bind(_),
 ).length;
 if (enabledSubproviderCount > 1) {
-    throw new Error(`Only one of coverage, profiler, or revert trace subproviders can be enabled at a time`);
-}
-if (isCoverageEnabled) {
-    const coverageSubprovider = coverage.getCoverageSubproviderSingleton();
-    prependSubprovider(provider, coverageSubprovider);
+    throw new Error(`Only one of profiler or revert trace subproviders can be enabled at a time`);
 }
 if (isProfilerEnabled) {
     const profilerSubprovider = profiler.getProfilerSubproviderSingleton();

contracts/treasury/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1675210931,
+        "version": "1.4.40",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1675105183,
+        "version": "1.4.39",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1674517560,
+        "version": "1.4.38",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1670879498,
+        "version": "1.4.37",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1669235113,
         "version": "1.4.36",

contracts/treasury/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.4.40 - _February 1, 2023_
+
+    * Dependencies updated
+
+## v1.4.39 - _January 30, 2023_
+
+    * Dependencies updated
+
+## v1.4.38 - _January 23, 2023_
+
+    * Dependencies updated
+
+## v1.4.37 - _December 12, 2022_
+
+    * Dependencies updated
+
 ## v1.4.36 - _November 23, 2022_
 
     * Dependencies updated

contracts/treasury/README.md

@@ -16,7 +16,7 @@ We strongly recommend that the community help us make improvements and determine
 
 For proposals regarding the 0x protocol's smart contract architecture, message format, or additional functionality, go to the [0x Improvement Proposals (ZEIPs)](https://github.com/0xProject/ZEIPs) repository and follow the contribution guidelines provided therein.
 
-Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
+Please read our [contribution guidelines](../../.github/CONTRIBUTING.md) before getting started.
 
 ### Install Dependencies
 

contracts/treasury/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-treasury",
-    "version": "1.4.36",
+    "version": "1.4.40",
     "engines": {
         "node": ">=6.12"
     },
@@ -23,7 +23,7 @@
         "generate_contract_wrappers": "abi-gen --debug --abis  ${npm_package_config_abis} --output test/generated-wrappers --backend ethers",
         "lint": "eslint src test",
         "fix": "eslint --fix src test",
-        "test:circleci": "yarn test",
+        "test:ci": "yarn test",
         "contracts:gen": "contracts-gen generate",
         "contracts:copy": "contracts-gen copy",
         "docs:md": "ts-doc-gen --sourceDir='$PROJECT_FILES' --output=$MD_FILE_DIR --fileExtension=mdx --tsconfig=./typedoc-tsconfig.json",
@@ -46,12 +46,12 @@
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/treasury",
     "devDependencies": {
         "@0x/abi-gen": "^5.8.1",
-        "@0x/contract-addresses": "^7.4.1",
+        "@0x/contract-addresses": "^8.0.3",
         "@0x/contracts-asset-proxy": "^3.7.19",
-        "@0x/contracts-erc20": "^3.3.53",
+        "@0x/contracts-erc20": "^3.3.57",
         "@0x/contracts-gen": "^2.0.48",
         "@0x/contracts-staking": "^2.0.45",
-        "@0x/contracts-test-utils": "^5.4.43",
+        "@0x/contracts-test-utils": "^5.4.47",
         "@0x/sol-compiler": "^4.8.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@types/isomorphic-fetch": "^0.0.35",
@@ -73,7 +73,7 @@
     },
     "dependencies": {
         "@0x/base-contract": "^7.0.0",
-        "@0x/protocol-utils": "^11.17.2",
+        "@0x/protocol-utils": "^11.17.6",
         "@0x/subproviders": "^7.0.0",
         "@0x/types": "^3.3.6",
         "@0x/typescript-typings": "^5.3.1",

contracts/utils/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1675210931,
+        "version": "4.8.38",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1675105183,
+        "version": "4.8.37",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1674517560,
+        "version": "4.8.36",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1670879498,
+        "version": "4.8.35",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1669235113,
         "version": "4.8.34",

contracts/utils/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.8.38 - _February 1, 2023_
+
+    * Dependencies updated
+
+## v4.8.37 - _January 30, 2023_
+
+    * Dependencies updated
+
+## v4.8.36 - _January 23, 2023_
+
+    * Dependencies updated
+
+## v4.8.35 - _December 12, 2022_
+
+    * Dependencies updated
+
 ## v4.8.34 - _November 23, 2022_
 
     * Dependencies updated

contracts/utils/README.md

@@ -16,7 +16,7 @@ We strongly recommend that the community help us make improvements and determine
 
 For proposals regarding the 0x protocol's smart contract architecture, message format, or additional functionality, go to the [0x Improvement Proposals (ZEIPs)](https://github.com/0xProject/ZEIPs) repository and follow the contribution guidelines provided therein.
 
-Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
+Please read our [contribution guidelines](../../.github/CONTRIBUTING.md) before getting started.
 
 ### Install Dependencies
 

contracts/utils/contracts/src/D18.sol

@@ -1,159 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.16;
-
-/// @dev A library for working with 18 digit, base 10 decimals.
-library D18 {
-    /// @dev Decimal places for dydx value quantities.
-    uint256 private constant PRECISION = 18;
-    /// @dev 1.0 in base-18 decimal.
-    int256 private constant DECIMAL_ONE = int256(10 ** PRECISION);
-    /// @dev Minimum signed integer value.
-    int256 private constant MIN_INT256_VALUE =
-        int256(0x8000000000000000000000000000000000000000000000000000000000000000);
-
-    /// @dev Return `1.0`
-    function one() internal pure returns (int256 r) {
-        r = DECIMAL_ONE;
-    }
-
-    /// @dev Add two decimals.
-    function add(int256 a, int256 b) internal pure returns (int256 r) {
-        r = _add(a, b);
-    }
-
-    /// @dev Add two decimals.
-    function add(uint256 a, int256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _add(int256(a), b);
-    }
-
-    /// @dev Add two decimals.
-    function add(int256 a, uint256 b) internal pure returns (int256 r) {
-        require(int256(b) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _add(a, int256(b));
-    }
-
-    /// @dev Add two decimals.
-    function add(uint256 a, uint256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        require(int256(b) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _add(int256(a), int256(b));
-    }
-
-    /// @dev Subract two decimals.
-    function sub(int256 a, int256 b) internal pure returns (int256 r) {
-        r = _add(a, -b);
-    }
-
-    /// @dev Subract two decimals.
-    function sub(uint256 a, int256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _add(int256(a), -b);
-    }
-
-    /// @dev Subract two decimals.
-    function sub(uint256 a, uint256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        require(int256(b) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _add(int256(a), -int256(b));
-    }
-
-    /// @dev Multiply two decimals.
-    function mul(int256 a, int256 b) internal pure returns (int256 r) {
-        r = _div(_mul(a, b), DECIMAL_ONE);
-    }
-
-    /// @dev Multiply two decimals.
-    function mul(uint256 a, int256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _div(_mul(int256(a), b), DECIMAL_ONE);
-    }
-
-    /// @dev Multiply two decimals.
-    function mul(int256 a, uint256 b) internal pure returns (int256 r) {
-        require(int256(b) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _div(_mul(a, int256(b)), DECIMAL_ONE);
-    }
-
-    /// @dev Multiply two decimals.
-    function mul(uint256 a, uint256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        require(int256(b) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _div(_mul(int256(a), int256(b)), DECIMAL_ONE);
-    }
-
-    /// @dev Divide two decimals.
-    function div(int256 a, int256 b) internal pure returns (int256 r) {
-        r = _div(_mul(a, DECIMAL_ONE), b);
-    }
-
-    /// @dev Divide two decimals.
-    function div(uint256 a, int256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _div(_mul(int256(a), DECIMAL_ONE), b);
-    }
-
-    /// @dev Divide two decimals.
-    function div(int256 a, uint256 b) internal pure returns (int256 r) {
-        require(int256(b) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _div(_mul(a, DECIMAL_ONE), int256(b));
-    }
-
-    /// @dev Divide two decimals.
-    function div(uint256 a, uint256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        require(int256(b) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _div(_mul(int256(a), DECIMAL_ONE), int256(b));
-    }
-
-    /// @dev Safely convert an unsigned integer into a signed integer.
-    function toSigned(uint256 a) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = int256(a);
-    }
-
-    /// @dev Clip a signed value to be positive.
-    function clip(int256 a) internal pure returns (int256 r) {
-        r = a < 0 ? 0 : a;
-    }
-
-    /// @dev Safely multiply two signed integers.
-    function _mul(int256 a, int256 b) private pure returns (int256 r) {
-        if (a == 0 || b == 0) {
-            return 0;
-        }
-        r = a * b;
-        require(r / a == b && r / b == a, "D18/DECIMAL_MUL_OVERFLOW");
-        return r;
-    }
-
-    /// @dev Safely divide two signed integers.
-    function _div(int256 a, int256 b) private pure returns (int256 r) {
-        require(b != 0, "D18/DECIMAL_DIV_BY_ZERO");
-        require(a != MIN_INT256_VALUE || b != -1, "D18/DECIMAL_DIV_OVERFLOW");
-        r = a / b;
-    }
-
-    /// @dev Safely add two signed integers.
-    function _add(int256 a, int256 b) private pure returns (int256 r) {
-        r = a + b;
-        require(!((a < 0 && b < 0 && r > a) || (a > 0 && b > 0 && r < a)), "D18/DECIMAL_ADD_OVERFLOW");
-    }
-}

contracts/utils/contracts/src/DeploymentConstants.sol

@@ -1,251 +0,0 @@
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-contract DeploymentConstants {
-    // Mainnet addresses ///////////////////////////////////////////////////////
-    /// @dev Mainnet address of the WETH contract.
-    address private constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
-    /// @dev Mainnet address of the KyberNetworkProxy contract.
-    address private constant KYBER_NETWORK_PROXY_ADDRESS = 0x9AAb3f75489902f3a48495025729a0AF77d4b11e;
-    /// @dev Mainnet address of the KyberHintHandler contract.
-    address private constant KYBER_HINT_HANDLER_ADDRESS = 0xa1C0Fa73c39CFBcC11ec9Eb1Afc665aba9996E2C;
-    /// @dev Mainnet address of the `UniswapExchangeFactory` contract.
-    address private constant UNISWAP_EXCHANGE_FACTORY_ADDRESS = 0xc0a47dFe034B400B47bDaD5FecDa2621de6c4d95;
-    /// @dev Mainnet address of the `UniswapV2Router01` contract.
-    address private constant UNISWAP_V2_ROUTER_01_ADDRESS = 0xf164fC0Ec4E93095b804a4795bBe1e041497b92a;
-    /// @dev Mainnet address of the Eth2Dai `MatchingMarket` contract.
-    address private constant ETH2DAI_ADDRESS = 0x794e6e91555438aFc3ccF1c5076A74F42133d08D;
-    /// @dev Mainnet address of the `ERC20BridgeProxy` contract
-    address private constant ERC20_BRIDGE_PROXY_ADDRESS = 0x8ED95d1746bf1E4dAb58d8ED4724f1Ef95B20Db0;
-    ///@dev Mainnet address of the `Dai` (multi-collateral) contract
-    address private constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;
-    /// @dev Mainnet address of the `Chai` contract
-    address private constant CHAI_ADDRESS = 0x06AF07097C9Eeb7fD685c692751D5C66dB49c215;
-    /// @dev Mainnet address of the 0x DevUtils contract.
-    address private constant DEV_UTILS_ADDRESS = 0x74134CF88b21383713E096a5ecF59e297dc7f547;
-    /// @dev Kyber ETH pseudo-address.
-    address internal constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
-    /// @dev Mainnet address of the dYdX contract.
-    address private constant DYDX_ADDRESS = 0x1E0447b19BB6EcFdAe1e4AE1694b0C3659614e4e;
-    /// @dev Mainnet address of the GST2 contract
-    address private constant GST_ADDRESS = 0x0000000000b3F879cb30FE243b4Dfee438691c04;
-    /// @dev Mainnet address of the GST Collector
-    address private constant GST_COLLECTOR_ADDRESS = 0x000000D3b08566BE75A6DB803C03C85C0c1c5B96;
-    /// @dev Mainnet address of the mStable mUSD contract.
-    address private constant MUSD_ADDRESS = 0xe2f2a5C287993345a840Db3B0845fbC70f5935a5;
-    /// @dev Mainnet address of the Mooniswap Registry contract
-    address private constant MOONISWAP_REGISTRY = 0x71CD6666064C3A1354a3B4dca5fA1E2D3ee7D303;
-    /// @dev Mainnet address of the DODO Registry (ZOO) contract
-    address private constant DODO_REGISTRY = 0x3A97247DF274a17C59A3bd12735ea3FcDFb49950;
-    /// @dev Mainnet address of the DODO Helper contract
-    address private constant DODO_HELPER = 0x533dA777aeDCE766CEAe696bf90f8541A4bA80Eb;
-
-    // // Ropsten addresses ///////////////////////////////////////////////////////
-    /// @dev Mainnet address of the WETH contract.
-    // address constant private WETH_ADDRESS = 0xc778417E063141139Fce010982780140Aa0cD5Ab;
-    /// @dev Mainnet address of the KyberNetworkProxy contract.
-    // address constant private KYBER_NETWORK_PROXY_ADDRESS = 0xd719c34261e099Fdb33030ac8909d5788D3039C4;
-    /// @dev Mainnet address of the `UniswapExchangeFactory` contract.
-    // address constant private UNISWAP_EXCHANGE_FACTORY_ADDRESS = 0x9c83dCE8CA20E9aAF9D3efc003b2ea62aBC08351;
-    /// @dev Mainnet address of the `UniswapV2Router01` contract.
-    // address constant private UNISWAP_V2_ROUTER_01_ADDRESS = 0xf164fC0Ec4E93095b804a4795bBe1e041497b92a;
-    /// @dev Mainnet address of the Eth2Dai `MatchingMarket` contract.
-    // address constant private ETH2DAI_ADDRESS = address(0);
-    /// @dev Mainnet address of the `ERC20BridgeProxy` contract
-    // address constant private ERC20_BRIDGE_PROXY_ADDRESS = 0xb344afeD348de15eb4a9e180205A2B0739628339;
-    // ///@dev Mainnet address of the `Dai` (multi-collateral) contract
-    // address constant private DAI_ADDRESS = address(0);
-    /// @dev Mainnet address of the `Chai` contract
-    // address constant private CHAI_ADDRESS = address(0);
-    /// @dev Mainnet address of the 0x DevUtils contract.
-    // address constant private DEV_UTILS_ADDRESS = 0xC812AF3f3fBC62F76ea4262576EC0f49dB8B7f1c;
-    /// @dev Kyber ETH pseudo-address.
-    // address constant internal KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
-    /// @dev Mainnet address of the dYdX contract.
-    // address constant private DYDX_ADDRESS = address(0);
-    /// @dev Mainnet address of the GST2 contract
-    // address constant private GST_ADDRESS = address(0);
-    /// @dev Mainnet address of the GST Collector
-    // address constant private GST_COLLECTOR_ADDRESS = address(0);
-    /// @dev Mainnet address of the mStable mUSD contract.
-    // address constant private MUSD_ADDRESS = 0x4E1000616990D83e56f4b5fC6CC8602DcfD20459;
-
-    // // Rinkeby addresses ///////////////////////////////////////////////////////
-    /// @dev Mainnet address of the WETH contract.
-    // address constant private WETH_ADDRESS = 0xc778417E063141139Fce010982780140Aa0cD5Ab;
-    /// @dev Mainnet address of the KyberNetworkProxy contract.
-    // address constant private KYBER_NETWORK_PROXY_ADDRESS = 0x0d5371e5EE23dec7DF251A8957279629aa79E9C5;
-    /// @dev Mainnet address of the `UniswapExchangeFactory` contract.
-    // address constant private UNISWAP_EXCHANGE_FACTORY_ADDRESS = 0xf5D915570BC477f9B8D6C0E980aA81757A3AaC36;
-    /// @dev Mainnet address of the `UniswapV2Router01` contract.
-    // address constant private UNISWAP_V2_ROUTER_01_ADDRESS = 0xf164fC0Ec4E93095b804a4795bBe1e041497b92a;
-    /// @dev Mainnet address of the Eth2Dai `MatchingMarket` contract.
-    // address constant private ETH2DAI_ADDRESS = address(0);
-    /// @dev Mainnet address of the `ERC20BridgeProxy` contract
-    // address constant private ERC20_BRIDGE_PROXY_ADDRESS = 0xA2AA4bEFED748Fba27a3bE7Dfd2C4b2c6DB1F49B;
-    // ///@dev Mainnet address of the `Dai` (multi-collateral) contract
-    // address constant private DAI_ADDRESS = address(0);
-    /// @dev Mainnet address of the `Chai` contract
-    // address constant private CHAI_ADDRESS = address(0);
-    /// @dev Mainnet address of the 0x DevUtils contract.
-    // address constant private DEV_UTILS_ADDRESS = 0x46B5BC959e8A754c0256FFF73bF34A52Ad5CdfA9;
-    /// @dev Kyber ETH pseudo-address.
-    // address constant internal KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
-    /// @dev Mainnet address of the dYdX contract.
-    // address constant private DYDX_ADDRESS = address(0);
-    /// @dev Mainnet address of the GST2 contract
-    // address constant private GST_ADDRESS = address(0);
-    /// @dev Mainnet address of the GST Collector
-    // address constant private GST_COLLECTOR_ADDRESS = address(0);
-    /// @dev Mainnet address of the mStable mUSD contract.
-    // address constant private MUSD_ADDRESS = address(0);
-
-    // // Kovan addresses /////////////////////////////////////////////////////////
-    /// @dev Kovan address of the WETH contract.
-    // address constant private WETH_ADDRESS = 0xd0A1E359811322d97991E03f863a0C30C2cF029C;
-    /// @dev Kovan address of the KyberNetworkProxy contract.
-    // address constant private KYBER_NETWORK_PROXY_ADDRESS = 0x692f391bCc85cefCe8C237C01e1f636BbD70EA4D;
-    /// @dev Kovan address of the `UniswapExchangeFactory` contract.
-    // address constant private UNISWAP_EXCHANGE_FACTORY_ADDRESS = 0xD3E51Ef092B2845f10401a0159B2B96e8B6c3D30;
-    /// @dev Kovan address of the `UniswapV2Router01` contract.
-    // address constant private UNISWAP_V2_ROUTER_01_ADDRESS = 0xf164fC0Ec4E93095b804a4795bBe1e041497b92a;
-    /// @dev Kovan address of the Eth2Dai `MatchingMarket` contract.
-    // address constant private ETH2DAI_ADDRESS = 0xe325acB9765b02b8b418199bf9650972299235F4;
-    /// @dev Kovan address of the `ERC20BridgeProxy` contract
-    // address constant private ERC20_BRIDGE_PROXY_ADDRESS = 0x3577552C1Fb7A44aD76BeEB7aB53251668A21F8D;
-    /// @dev Kovan address of the `Chai` contract
-    // address constant private CHAI_ADDRESS = address(0);
-    /// @dev Kovan address of the `Dai` (multi-collateral) contract
-    // address constant private DAI_ADDRESS = 0x4F96Fe3b7A6Cf9725f59d353F723c1bDb64CA6Aa;
-    /// @dev Kovan address of the 0x DevUtils contract.
-    // address constant private DEV_UTILS_ADDRESS = 0x9402639A828BdF4E9e4103ac3B69E1a6E522eB59;
-    /// @dev Kyber ETH pseudo-address.
-    // address constant internal KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
-    /// @dev Kovan address of the dYdX contract.
-    // address constant private DYDX_ADDRESS = address(0);
-    /// @dev Kovan address of the GST2 contract
-    // address constant private GST_ADDRESS = address(0);
-    /// @dev Kovan address of the GST Collector
-    // address constant private GST_COLLECTOR_ADDRESS = address(0);
-    /// @dev Mainnet address of the mStable mUSD contract.
-    // address constant private MUSD_ADDRESS = address(0);
-
-    /// @dev Overridable way to get the `KyberNetworkProxy` address.
-    /// @return kyberAddress The `IKyberNetworkProxy` address.
-    function _getKyberNetworkProxyAddress() internal view returns (address kyberAddress) {
-        return KYBER_NETWORK_PROXY_ADDRESS;
-    }
-
-    /// @dev Overridable way to get the `KyberHintHandler` address.
-    /// @return kyberAddress The `IKyberHintHandler` address.
-    function _getKyberHintHandlerAddress() internal view returns (address hintHandlerAddress) {
-        return KYBER_HINT_HANDLER_ADDRESS;
-    }
-
-    /// @dev Overridable way to get the WETH address.
-    /// @return wethAddress The WETH address.
-    function _getWethAddress() internal view returns (address wethAddress) {
-        return WETH_ADDRESS;
-    }
-
-    /// @dev Overridable way to get the `UniswapExchangeFactory` address.
-    /// @return uniswapAddress The `UniswapExchangeFactory` address.
-    function _getUniswapExchangeFactoryAddress() internal view returns (address uniswapAddress) {
-        return UNISWAP_EXCHANGE_FACTORY_ADDRESS;
-    }
-
-    /// @dev Overridable way to get the `UniswapV2Router01` address.
-    /// @return uniswapRouterAddress The `UniswapV2Router01` address.
-    function _getUniswapV2Router01Address() internal view returns (address uniswapRouterAddress) {
-        return UNISWAP_V2_ROUTER_01_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the Eth2Dai `MatchingMarket` contract.
-    /// @return eth2daiAddress The Eth2Dai `MatchingMarket` contract.
-    function _getEth2DaiAddress() internal view returns (address eth2daiAddress) {
-        return ETH2DAI_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the `ERC20BridgeProxy` contract.
-    /// @return erc20BridgeProxyAddress The `ERC20BridgeProxy` contract.
-    function _getERC20BridgeProxyAddress() internal view returns (address erc20BridgeProxyAddress) {
-        return ERC20_BRIDGE_PROXY_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the `Dai` contract.
-    /// @return daiAddress The `Dai` contract.
-    function _getDaiAddress() internal view returns (address daiAddress) {
-        return DAI_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the `Chai` contract.
-    /// @return chaiAddress The `Chai` contract.
-    function _getChaiAddress() internal view returns (address chaiAddress) {
-        return CHAI_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the 0x `DevUtils` contract address.
-    /// @return devUtils The 0x `DevUtils` contract address.
-    function _getDevUtilsAddress() internal view returns (address devUtils) {
-        return DEV_UTILS_ADDRESS;
-    }
-
-    /// @dev Overridable way to get the DyDx contract.
-    /// @return exchange The DyDx exchange contract.
-    function _getDydxAddress() internal view returns (address dydxAddress) {
-        return DYDX_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the GST2 contract address.
-    /// @return gst The GST contract.
-    function _getGstAddress() internal view returns (address gst) {
-        return GST_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the GST Collector address.
-    /// @return collector The GST collector address.
-    function _getGstCollectorAddress() internal view returns (address collector) {
-        return GST_COLLECTOR_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the mStable mUSD address.
-    /// @return musd The mStable mUSD address.
-    function _getMUsdAddress() internal view returns (address musd) {
-        return MUSD_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the Mooniswap registry address.
-    /// @return registry The Mooniswap registry address.
-    function _getMooniswapAddress() internal view returns (address) {
-        return MOONISWAP_REGISTRY;
-    }
-
-    /// @dev An overridable way to retrieve the DODO Registry contract address.
-    /// @return registry The DODO Registry contract address.
-    function _getDODORegistryAddress() internal view returns (address) {
-        return DODO_REGISTRY;
-    }
-
-    /// @dev An overridable way to retrieve the DODO Helper contract address.
-    /// @return registry The DODO Helper contract address.
-    function _getDODOHelperAddress() internal view returns (address) {
-        return DODO_HELPER;
-    }
-}

contracts/utils/contracts/src/LibAddress.sol

@@ -1,46 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-/**
- * Utility library of inline functions on addresses
- */
-library LibAddress {
-    /**
-     * Returns whether the target address is a contract
-     * @dev This function will return false if invoked during the constructor of a contract,
-     * as the code is not actually created until after the constructor finishes.
-     * @param account address of the account to check
-     * @return whether the target address is a contract
-     */
-    function isContract(address account) internal view returns (bool) {
-        uint256 size;
-        // XXX Currently there is no better way to check if there is a contract in an address
-        // than to check the size of the code at that address.
-        // See https://ethereum.stackexchange.com/a/14016/36603
-        // for more details about how this works.
-        // TODO Check this again before the Serenity release, because all addresses will be
-        // contracts then.
-        // solium-disable-next-line security/no-inline-assembly
-        assembly {
-            size := extcodesize(account)
-        }
-        return size > 0;
-    }
-}

contracts/utils/contracts/src/LibAddressArray.sol

@@ -1,153 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "./LibAddressArrayRichErrors.sol";
-import "./LibBytes.sol";
-import "./LibRichErrors.sol";
-
-library LibAddressArray {
-    /// @dev Append a new address to an array of addresses.
-    ///      The `addressArray` may need to be reallocated to make space
-    ///      for the new address. Because of this we return the resulting
-    ///      memory location of `addressArray`.
-    /// @param addressArray Array of addresses.
-    /// @param addressToAppend  Address to append.
-    /// @return Array of addresses: [... addressArray, addressToAppend]
-    function append(address[] memory addressArray, address addressToAppend) internal pure returns (address[] memory) {
-        // Get stats on address array and free memory
-        uint256 freeMemPtr = 0;
-        uint256 addressArrayBeginPtr = 0;
-        uint256 addressArrayEndPtr = 0;
-        uint256 addressArrayLength = addressArray.length;
-        uint256 addressArrayMemSizeInBytes = 32 + (32 * addressArrayLength);
-        assembly {
-            freeMemPtr := mload(0x40)
-            addressArrayBeginPtr := addressArray
-            addressArrayEndPtr := add(addressArray, addressArrayMemSizeInBytes)
-        }
-
-        // Cases for `freeMemPtr`:
-        //  `freeMemPtr` == `addressArrayEndPtr`: Nothing occupies memory after `addressArray`
-        //  `freeMemPtr` > `addressArrayEndPtr`: Some value occupies memory after `addressArray`
-        //  `freeMemPtr` < `addressArrayEndPtr`: Memory has not been managed properly.
-        if (freeMemPtr < addressArrayEndPtr) {
-            LibRichErrors.rrevert(LibAddressArrayRichErrors.MismanagedMemoryError(freeMemPtr, addressArrayEndPtr));
-        }
-
-        // If free memory begins at the end of `addressArray`
-        // then we can append `addressToAppend` directly.
-        // Otherwise, we must copy the array to free memory
-        // before appending new values to it.
-        if (freeMemPtr > addressArrayEndPtr) {
-            LibBytes.memCopy(freeMemPtr, addressArrayBeginPtr, addressArrayMemSizeInBytes);
-            assembly {
-                addressArray := freeMemPtr
-                addressArrayBeginPtr := addressArray
-            }
-        }
-
-        // Append `addressToAppend`
-        addressArrayLength += 1;
-        addressArrayMemSizeInBytes += 32;
-        addressArrayEndPtr = addressArrayBeginPtr + addressArrayMemSizeInBytes;
-        freeMemPtr = addressArrayEndPtr;
-        assembly {
-            // Store new array length
-            mstore(addressArray, addressArrayLength)
-
-            // Update `freeMemPtr`
-            mstore(0x40, freeMemPtr)
-        }
-        addressArray[addressArrayLength - 1] = addressToAppend;
-        return addressArray;
-    }
-
-    /// @dev Checks if an address array contains the target address.
-    /// @param addressArray Array of addresses.
-    /// @param target Address to search for in array.
-    /// @return True if the addressArray contains the target.
-    function contains(address[] memory addressArray, address target) internal pure returns (bool success) {
-        assembly {
-            // Calculate byte length of array
-            let arrayByteLen := mul(mload(addressArray), 32)
-            // Calculate beginning of array contents
-            let arrayContentsStart := add(addressArray, 32)
-            // Calclulate end of array contents
-            let arrayContentsEnd := add(arrayContentsStart, arrayByteLen)
-
-            // Loop through array
-            for {
-                let i := arrayContentsStart
-            } lt(i, arrayContentsEnd) {
-                i := add(i, 32)
-            } {
-                // Load array element
-                let arrayElement := mload(i)
-
-                // Return true if array element equals target
-                if eq(target, arrayElement) {
-                    // Set success to true
-                    success := 1
-                    // Break loop
-                    i := arrayContentsEnd
-                }
-            }
-        }
-        return success;
-    }
-
-    /// @dev Finds the index of an address within an array.
-    /// @param addressArray Array of addresses.
-    /// @param target Address to search for in array.
-    /// @return Existence and index of the target in the array.
-    function indexOf(
-        address[] memory addressArray,
-        address target
-    ) internal pure returns (bool success, uint256 index) {
-        assembly {
-            // Calculate byte length of array
-            let arrayByteLen := mul(mload(addressArray), 32)
-            // Calculate beginning of array contents
-            let arrayContentsStart := add(addressArray, 32)
-            // Calclulate end of array contents
-            let arrayContentsEnd := add(arrayContentsStart, arrayByteLen)
-
-            // Loop through array
-            for {
-                let i := arrayContentsStart
-            } lt(i, arrayContentsEnd) {
-                i := add(i, 32)
-            } {
-                // Load array element
-                let arrayElement := mload(i)
-
-                // Return true if array element equals target
-                if eq(target, arrayElement) {
-                    // Set success and index
-                    success := 1
-                    index := div(sub(i, arrayContentsStart), 32)
-                    // Break loop
-                    i := arrayContentsEnd
-                }
-            }
-        }
-        return (success, index);
-    }
-}

contracts/utils/contracts/src/LibAddressArrayRichErrors.sol

@@ -1,31 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-library LibAddressArrayRichErrors {
-    // bytes4(keccak256("MismanagedMemoryError(uint256,uint256)"))
-    bytes4 internal constant MISMANAGED_MEMORY_ERROR_SELECTOR = 0x5fc83722;
-
-    function MismanagedMemoryError(
-        uint256 freeMemPtr,
-        uint256 addressArrayEndPtr
-    ) internal pure returns (bytes memory) {
-        return abi.encodeWithSelector(MISMANAGED_MEMORY_ERROR_SELECTOR, freeMemPtr, addressArrayEndPtr);
-    }
-}

contracts/utils/contracts/src/LibEIP1271.sol

@@ -1,25 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-contract LibEIP1271 {
-    /// @dev Magic bytes returned by EIP1271 wallets on success.
-    /// @return 0 Magic bytes.
-    bytes4 public constant EIP1271_MAGIC_VALUE = 0x20c13b0b;
-}

contracts/utils/contracts/src/LibEIP712.sol

@@ -1,103 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-library LibEIP712 {
-    // Hash of the EIP712 Domain Separator Schema
-    // keccak256(abi.encodePacked(
-    //     "EIP712Domain(",
-    //     "string name,",
-    //     "string version,",
-    //     "uint256 chainId,",
-    //     "address verifyingContract",
-    //     ")"
-    // ))
-    bytes32 internal constant _EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH =
-        0x8b73c3c69bb8fe3d512ecc4cf759cc79239f7b179b0ffacaa9a75d522b39400f;
-
-    /// @dev Calculates a EIP712 domain separator.
-    /// @param name The EIP712 domain name.
-    /// @param version The EIP712 domain version.
-    /// @param verifyingContract The EIP712 verifying contract.
-    /// @return EIP712 domain separator.
-    function hashEIP712Domain(
-        string memory name,
-        string memory version,
-        uint256 chainId,
-        address verifyingContract
-    ) internal pure returns (bytes32 result) {
-        bytes32 schemaHash = _EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH;
-
-        // Assembly for more efficient computing:
-        // keccak256(abi.encodePacked(
-        //     _EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH,
-        //     keccak256(bytes(name)),
-        //     keccak256(bytes(version)),
-        //     chainId,
-        //     uint256(verifyingContract)
-        // ))
-
-        assembly {
-            // Calculate hashes of dynamic data
-            let nameHash := keccak256(add(name, 32), mload(name))
-            let versionHash := keccak256(add(version, 32), mload(version))
-
-            // Load free memory pointer
-            let memPtr := mload(64)
-
-            // Store params in memory
-            mstore(memPtr, schemaHash)
-            mstore(add(memPtr, 32), nameHash)
-            mstore(add(memPtr, 64), versionHash)
-            mstore(add(memPtr, 96), chainId)
-            mstore(add(memPtr, 128), verifyingContract)
-
-            // Compute hash
-            result := keccak256(memPtr, 160)
-        }
-        return result;
-    }
-
-    /// @dev Calculates EIP712 encoding for a hash struct with a given domain hash.
-    /// @param eip712DomainHash Hash of the domain domain separator data, computed
-    ///                         with getDomainHash().
-    /// @param hashStruct The EIP712 hash struct.
-    /// @return EIP712 hash applied to the given EIP712 Domain.
-    function hashEIP712Message(bytes32 eip712DomainHash, bytes32 hashStruct) internal pure returns (bytes32 result) {
-        // Assembly for more efficient computing:
-        // keccak256(abi.encodePacked(
-        //     EIP191_HEADER,
-        //     EIP712_DOMAIN_HASH,
-        //     hashStruct
-        // ));
-
-        assembly {
-            // Load free memory pointer
-            let memPtr := mload(64)
-
-            mstore(memPtr, 0x1901000000000000000000000000000000000000000000000000000000000000) // EIP191 header
-            mstore(add(memPtr, 2), eip712DomainHash) // EIP712 domain hash
-            mstore(add(memPtr, 34), hashStruct) // Hash of struct
-
-            // Compute hash
-            result := keccak256(memPtr, 66)
-        }
-        return result;
-    }
-}

contracts/utils/contracts/src/LibFractions.sol

@@ -1,96 +0,0 @@
-pragma solidity ^0.5.9;
-
-import "./LibSafeMath.sol";
-
-library LibFractions {
-    using LibSafeMath for uint256;
-
-    /// @dev Safely adds two fractions `n1/d1 + n2/d2`
-    /// @param n1 numerator of `1`
-    /// @param d1 denominator of `1`
-    /// @param n2 numerator of `2`
-    /// @param d2 denominator of `2`
-    /// @return numerator Numerator of sum
-    /// @return denominator Denominator of sum
-    function add(
-        uint256 n1,
-        uint256 d1,
-        uint256 n2,
-        uint256 d2
-    ) internal pure returns (uint256 numerator, uint256 denominator) {
-        if (n1 == 0) {
-            return (numerator = n2, denominator = d2);
-        }
-        if (n2 == 0) {
-            return (numerator = n1, denominator = d1);
-        }
-        numerator = n1.safeMul(d2).safeAdd(n2.safeMul(d1));
-        denominator = d1.safeMul(d2);
-        return (numerator, denominator);
-    }
-
-    /// @dev Rescales a fraction to prevent overflows during addition if either
-    ///      the numerator or the denominator are > `maxValue`.
-    /// @param numerator The numerator.
-    /// @param denominator The denominator.
-    /// @param maxValue The maximum value allowed for both the numerator and
-    ///        denominator.
-    /// @return scaledNumerator The rescaled numerator.
-    /// @return scaledDenominator The rescaled denominator.
-    function normalize(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 maxValue
-    ) internal pure returns (uint256 scaledNumerator, uint256 scaledDenominator) {
-        // If either the numerator or the denominator are > `maxValue`,
-        // re-scale them by `maxValue` to prevent overflows in future operations.
-        if (numerator > maxValue || denominator > maxValue) {
-            uint256 rescaleBase = numerator >= denominator ? numerator : denominator;
-            rescaleBase = rescaleBase.safeDiv(maxValue);
-            scaledNumerator = numerator.safeDiv(rescaleBase);
-            scaledDenominator = denominator.safeDiv(rescaleBase);
-        } else {
-            scaledNumerator = numerator;
-            scaledDenominator = denominator;
-        }
-        return (scaledNumerator, scaledDenominator);
-    }
-
-    /// @dev Rescales a fraction to prevent overflows during addition if either
-    ///      the numerator or the denominator are > 2 ** 127.
-    /// @param numerator The numerator.
-    /// @param denominator The denominator.
-    /// @return scaledNumerator The rescaled numerator.
-    /// @return scaledDenominator The rescaled denominator.
-    function normalize(
-        uint256 numerator,
-        uint256 denominator
-    ) internal pure returns (uint256 scaledNumerator, uint256 scaledDenominator) {
-        return normalize(numerator, denominator, 2 ** 127);
-    }
-
-    /// @dev Safely scales the difference between two fractions.
-    /// @param n1 numerator of `1`
-    /// @param d1 denominator of `1`
-    /// @param n2 numerator of `2`
-    /// @param d2 denominator of `2`
-    /// @param s scalar to multiply by difference.
-    /// @return result `s * (n1/d1 - n2/d2)`.
-    function scaleDifference(
-        uint256 n1,
-        uint256 d1,
-        uint256 n2,
-        uint256 d2,
-        uint256 s
-    ) internal pure returns (uint256 result) {
-        if (s == 0) {
-            return 0;
-        }
-        if (n2 == 0) {
-            return result = s.safeMul(n1).safeDiv(d1);
-        }
-        uint256 numerator = n1.safeMul(d2).safeSub(n2.safeMul(d1));
-        uint256 tmp = numerator.safeDiv(d2);
-        return s.safeMul(tmp).safeDiv(d1);
-    }
-}

contracts/utils/contracts/src/LibMathRichErrors.sol

@@ -1,21 +0,0 @@
-pragma solidity ^0.5.9;
-
-library LibMathRichErrors {
-    // bytes4(keccak256("DivisionByZeroError()"))
-    bytes internal constant DIVISION_BY_ZERO_ERROR = hex"a791837c";
-
-    // bytes4(keccak256("RoundingError(uint256,uint256,uint256)"))
-    bytes4 internal constant ROUNDING_ERROR_SELECTOR = 0x339f3de2;
-
-    function DivisionByZeroError() internal pure returns (bytes memory) {
-        return DIVISION_BY_ZERO_ERROR;
-    }
-
-    function RoundingError(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) internal pure returns (bytes memory) {
-        return abi.encodeWithSelector(ROUNDING_ERROR_SELECTOR, numerator, denominator, target);
-    }
-}

contracts/utils/contracts/src/Refundable.sol

@@ -1,74 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "./ReentrancyGuard.sol";
-
-contract Refundable is ReentrancyGuard {
-    // This bool is used by the refund modifier to allow for lazily evaluated refunds.
-    bool internal _shouldNotRefund;
-
-    modifier refundFinalBalance() {
-        _;
-        _refundNonZeroBalanceIfEnabled();
-    }
-
-    modifier refundFinalBalanceNoReentry() {
-        _lockMutexOrThrowIfAlreadyLocked();
-        _;
-        _refundNonZeroBalanceIfEnabled();
-        _unlockMutex();
-    }
-
-    modifier disableRefundUntilEnd() {
-        if (_areRefundsDisabled()) {
-            _;
-        } else {
-            _disableRefund();
-            _;
-            _enableAndRefundNonZeroBalance();
-        }
-    }
-
-    function _refundNonZeroBalanceIfEnabled() internal {
-        if (!_areRefundsDisabled()) {
-            _refundNonZeroBalance();
-        }
-    }
-
-    function _refundNonZeroBalance() internal {
-        uint256 balance = address(this).balance;
-        if (balance > 0) {
-            msg.sender.transfer(balance);
-        }
-    }
-
-    function _disableRefund() internal {
-        _shouldNotRefund = true;
-    }
-
-    function _enableAndRefundNonZeroBalance() internal {
-        _shouldNotRefund = false;
-        _refundNonZeroBalance();
-    }
-
-    function _areRefundsDisabled() internal view returns (bool) {
-        return _shouldNotRefund;
-    }
-}

contracts/utils/contracts/src/v08/AuthorizableV08.sol

@@ -1,6 +1,7 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 
-  Copyright 2019 ZeroEx Intl.
+  Copyright 2020 ZeroEx Intl.
 
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
@@ -16,43 +17,43 @@
 
 */
 
-pragma solidity ^0.5.9;
+pragma solidity ^0.8;
 
-import "./interfaces/IAuthorizable.sol";
-import "./LibAuthorizableRichErrors.sol";
-import "./LibRichErrors.sol";
-import "./Ownable.sol";
+import "./interfaces/IAuthorizableV08.sol";
+import "./errors/LibRichErrorsV08.sol";
+import "./errors/LibAuthorizableRichErrorsV08.sol";
+import "./OwnableV08.sol";
 
-contract Authorizable is Ownable, IAuthorizable {
+contract AuthorizableV08 is OwnableV08, IAuthorizableV08 {
     /// @dev Only authorized addresses can invoke functions with this modifier.
     modifier onlyAuthorized() {
         _assertSenderIsAuthorized();
         _;
     }
 
-    /// @dev Whether an adderss is authorized to call privileged functions.
-    /// @param 0 Address to query.
-    /// @return 0 Whether the address is authorized.
-    mapping(address => bool) public authorized;
-    /// @dev Whether an adderss is authorized to call privileged functions.
-    /// @param 0 Index of authorized address.
-    /// @return 0 Authorized address.
-    address[] public authorities;
+    // @dev Whether an address is authorized to call privileged functions.
+    // @param 0 Address to query.
+    // @return 0 Whether the address is authorized.
+    mapping(address => bool) public override authorized;
+    // @dev Whether an address is authorized to call privileged functions.
+    // @param 0 Index of authorized address.
+    // @return 0 Authorized address.
+    address[] public override authorities;
 
     /// @dev Initializes the `owner` address.
-    constructor() public Ownable() {}
+    constructor() OwnableV08() {}
 
     /// @dev Authorizes an address.
     /// @param target Address to authorize.
-    function addAuthorizedAddress(address target) external onlyOwner {
+    function addAuthorizedAddress(address target) external override onlyOwner {
         _addAuthorizedAddress(target);
     }
 
     /// @dev Removes authorizion of an address.
     /// @param target Address to remove authorization from.
-    function removeAuthorizedAddress(address target) external onlyOwner {
+    function removeAuthorizedAddress(address target) external override onlyOwner {
         if (!authorized[target]) {
-            LibRichErrors.rrevert(LibAuthorizableRichErrors.TargetNotAuthorizedError(target));
+            LibRichErrorsV08.rrevert(LibAuthorizableRichErrorsV08.TargetNotAuthorizedError(target));
         }
         for (uint256 i = 0; i < authorities.length; i++) {
             if (authorities[i] == target) {
@@ -65,20 +66,20 @@ contract Authorizable is Ownable, IAuthorizable {
     /// @dev Removes authorizion of an address.
     /// @param target Address to remove authorization from.
     /// @param index Index of target in authorities array.
-    function removeAuthorizedAddressAtIndex(address target, uint256 index) external onlyOwner {
+    function removeAuthorizedAddressAtIndex(address target, uint256 index) external override onlyOwner {
         _removeAuthorizedAddressAtIndex(target, index);
     }
 
     /// @dev Gets all authorized addresses.
     /// @return Array of authorized addresses.
-    function getAuthorizedAddresses() external view returns (address[] memory) {
+    function getAuthorizedAddresses() external view override returns (address[] memory) {
         return authorities;
     }
 
     /// @dev Reverts if msg.sender is not authorized.
     function _assertSenderIsAuthorized() internal view {
         if (!authorized[msg.sender]) {
-            LibRichErrors.rrevert(LibAuthorizableRichErrors.SenderNotAuthorizedError(msg.sender));
+            LibRichErrorsV08.rrevert(LibAuthorizableRichErrorsV08.SenderNotAuthorizedError(msg.sender));
         }
     }
 
@@ -87,12 +88,12 @@ contract Authorizable is Ownable, IAuthorizable {
     function _addAuthorizedAddress(address target) internal {
         // Ensure that the target is not the zero address.
         if (target == address(0)) {
-            LibRichErrors.rrevert(LibAuthorizableRichErrors.ZeroCantBeAuthorizedError());
+            LibRichErrorsV08.rrevert(LibAuthorizableRichErrorsV08.ZeroCantBeAuthorizedError());
         }
 
         // Ensure that the target is not already authorized.
         if (authorized[target]) {
-            LibRichErrors.rrevert(LibAuthorizableRichErrors.TargetAlreadyAuthorizedError(target));
+            LibRichErrorsV08.rrevert(LibAuthorizableRichErrorsV08.TargetAlreadyAuthorizedError(target));
         }
 
         authorized[target] = true;
@@ -105,18 +106,20 @@ contract Authorizable is Ownable, IAuthorizable {
     /// @param index Index of target in authorities array.
     function _removeAuthorizedAddressAtIndex(address target, uint256 index) internal {
         if (!authorized[target]) {
-            LibRichErrors.rrevert(LibAuthorizableRichErrors.TargetNotAuthorizedError(target));
+            LibRichErrorsV08.rrevert(LibAuthorizableRichErrorsV08.TargetNotAuthorizedError(target));
         }
         if (index >= authorities.length) {
-            LibRichErrors.rrevert(LibAuthorizableRichErrors.IndexOutOfBoundsError(index, authorities.length));
+            LibRichErrorsV08.rrevert(LibAuthorizableRichErrorsV08.IndexOutOfBoundsError(index, authorities.length));
         }
         if (authorities[index] != target) {
-            LibRichErrors.rrevert(LibAuthorizableRichErrors.AuthorizedAddressMismatchError(authorities[index], target));
+            LibRichErrorsV08.rrevert(
+                LibAuthorizableRichErrorsV08.AuthorizedAddressMismatchError(authorities[index], target)
+            );
         }
 
         delete authorized[target];
         authorities[index] = authorities[authorities.length - 1];
-        authorities.length -= 1;
+        authorities.pop();
         emit AuthorizedAddressRemoved(target, msg.sender);
     }
 }

contracts/utils/contracts/src/v08/LibBytesV08.sol

@@ -0,0 +1,434 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.8;
+
+import "./errors/LibBytesRichErrorsV08.sol";
+import "./errors/LibRichErrorsV08.sol";
+
+library LibBytesV08 {
+    using LibBytesV08 for bytes;
+
+    /// @dev Gets the memory address for a byte array.
+    /// @param input Byte array to lookup.
+    /// @return memoryAddress Memory address of byte array. This
+    ///         points to the header of the byte array which contains
+    ///         the length.
+    function rawAddress(bytes memory input) internal pure returns (uint256 memoryAddress) {
+        assembly ("memory-safe") {
+            memoryAddress := input
+        }
+        return memoryAddress;
+    }
+
+    /// @dev Gets the memory address for the contents of a byte array.
+    /// @param input Byte array to lookup.
+    /// @return memoryAddress Memory address of the contents of the byte array.
+    function contentAddress(bytes memory input) internal pure returns (uint256 memoryAddress) {
+        assembly ("memory-safe") {
+            memoryAddress := add(input, 32)
+        }
+        return memoryAddress;
+    }
+
+    /// @dev Copies `length` bytes from memory location `source` to `dest`.
+    /// @param dest memory address to copy bytes to.
+    /// @param source memory address to copy bytes from.
+    /// @param length number of bytes to copy.
+    function memCopy(uint256 dest, uint256 source, uint256 length) internal pure {
+        if (length < 32) {
+            // Handle a partial word by reading destination and masking
+            // off the bits we are interested in.
+            // This correctly handles overlap, zero lengths and source == dest
+            assembly {
+                let mask := sub(exp(256, sub(32, length)), 1)
+                let s := and(mload(source), not(mask))
+                let d := and(mload(dest), mask)
+                mstore(dest, or(s, d))
+            }
+        } else {
+            // Skip the O(length) loop when source == dest.
+            if (source == dest) {
+                return;
+            }
+
+            // For large copies we copy whole words at a time. The final
+            // word is aligned to the end of the range (instead of after the
+            // previous) to handle partial words. So a copy will look like this:
+            //
+            //  ####
+            //      ####
+            //          ####
+            //            ####
+            //
+            // We handle overlap in the source and destination range by
+            // changing the copying direction. This prevents us from
+            // overwriting parts of source that we still need to copy.
+            //
+            // This correctly handles source == dest
+            //
+            if (source > dest) {
+                assembly {
+                    // We subtract 32 from `sEnd` and `dEnd` because it
+                    // is easier to compare with in the loop, and these
+                    // are also the addresses we need for copying the
+                    // last bytes.
+                    length := sub(length, 32)
+                    let sEnd := add(source, length)
+                    let dEnd := add(dest, length)
+
+                    // Remember the last 32 bytes of source
+                    // This needs to be done here and not after the loop
+                    // because we may have overwritten the last bytes in
+                    // source already due to overlap.
+                    let last := mload(sEnd)
+
+                    // Copy whole words front to back
+                    // Note: the first check is always true,
+                    // this could have been a do-while loop.
+                    for {
+
+                    } lt(source, sEnd) {
+
+                    } {
+                        mstore(dest, mload(source))
+                        source := add(source, 32)
+                        dest := add(dest, 32)
+                    }
+
+                    // Write the last 32 bytes
+                    mstore(dEnd, last)
+                }
+            } else {
+                assembly {
+                    // We subtract 32 from `sEnd` and `dEnd` because those
+                    // are the starting points when copying a word at the end.
+                    length := sub(length, 32)
+                    let sEnd := add(source, length)
+                    let dEnd := add(dest, length)
+
+                    // Remember the first 32 bytes of source
+                    // This needs to be done here and not after the loop
+                    // because we may have overwritten the first bytes in
+                    // source already due to overlap.
+                    let first := mload(source)
+
+                    // Copy whole words back to front
+                    // We use a signed comparisson here to allow dEnd to become
+                    // negative (happens when source and dest < 32). Valid
+                    // addresses in local memory will never be larger than
+                    // 2**255, so they can be safely re-interpreted as signed.
+                    // Note: the first check is always true,
+                    // this could have been a do-while loop.
+                    for {
+
+                    } slt(dest, dEnd) {
+
+                    } {
+                        mstore(dEnd, mload(sEnd))
+                        sEnd := sub(sEnd, 32)
+                        dEnd := sub(dEnd, 32)
+                    }
+
+                    // Write the first 32 bytes
+                    mstore(dest, first)
+                }
+            }
+        }
+    }
+
+    /// @dev Returns a slices from a byte array.
+    /// @param b The byte array to take a slice from.
+    /// @param from The starting index for the slice (inclusive).
+    /// @param to The final index for the slice (exclusive).
+    /// @return result The slice containing bytes at indices [from, to)
+    function slice(bytes memory b, uint256 from, uint256 to) internal pure returns (bytes memory result) {
+        // Ensure that the from and to positions are valid positions for a slice within
+        // the byte array that is being used.
+        if (from > to) {
+            LibRichErrorsV08.rrevert(
+                LibBytesRichErrorsV08.InvalidByteOperationError(
+                    LibBytesRichErrorsV08.InvalidByteOperationErrorCodes.FromLessThanOrEqualsToRequired,
+                    from,
+                    to
+                )
+            );
+        }
+        if (to > b.length) {
+            LibRichErrorsV08.rrevert(
+                LibBytesRichErrorsV08.InvalidByteOperationError(
+                    LibBytesRichErrorsV08.InvalidByteOperationErrorCodes.ToLessThanOrEqualsLengthRequired,
+                    to,
+                    b.length
+                )
+            );
+        }
+
+        // Create a new bytes structure and copy contents
+        result = new bytes(to - from);
+        memCopy(result.contentAddress(), b.contentAddress() + from, result.length);
+        return result;
+    }
+
+    /// @dev Returns a slice from a byte array without preserving the input.
+    ///      When `from == 0`, the original array will match the slice.
+    ///      In other cases its state will be corrupted.
+    /// @param b The byte array to take a slice from. Will be destroyed in the process.
+    /// @param from The starting index for the slice (inclusive).
+    /// @param to The final index for the slice (exclusive).
+    /// @return result The slice containing bytes at indices [from, to)
+    function sliceDestructive(bytes memory b, uint256 from, uint256 to) internal pure returns (bytes memory result) {
+        // Ensure that the from and to positions are valid positions for a slice within
+        // the byte array that is being used.
+        if (from > to) {
+            LibRichErrorsV08.rrevert(
+                LibBytesRichErrorsV08.InvalidByteOperationError(
+                    LibBytesRichErrorsV08.InvalidByteOperationErrorCodes.FromLessThanOrEqualsToRequired,
+                    from,
+                    to
+                )
+            );
+        }
+        if (to > b.length) {
+            LibRichErrorsV08.rrevert(
+                LibBytesRichErrorsV08.InvalidByteOperationError(
+                    LibBytesRichErrorsV08.InvalidByteOperationErrorCodes.ToLessThanOrEqualsLengthRequired,
+                    to,
+                    b.length
+                )
+            );
+        }
+
+        // Create a new bytes structure around [from, to) in-place.
+        assembly {
+            result := add(b, from)
+            mstore(result, sub(to, from))
+        }
+        return result;
+    }
+
+    /// @dev Pops the last byte off of a byte array by modifying its length.
+    /// @param b Byte array that will be modified.
+    /// @return result The byte that was popped off.
+    function popLastByte(bytes memory b) internal pure returns (bytes1 result) {
+        if (b.length == 0) {
+            LibRichErrorsV08.rrevert(
+                LibBytesRichErrorsV08.InvalidByteOperationError(
+                    LibBytesRichErrorsV08.InvalidByteOperationErrorCodes.LengthGreaterThanZeroRequired,
+                    b.length,
+                    0
+                )
+            );
+        }
+
+        // Store last byte.
+        result = b[b.length - 1];
+
+        assembly ("memory-safe") {
+            // Decrement length of byte array.
+            let newLen := sub(mload(b), 1)
+            mstore(b, newLen)
+        }
+        return result;
+    }
+
+    /// @dev Tests equality of two byte arrays.
+    /// @param lhs First byte array to compare.
+    /// @param rhs Second byte array to compare.
+    /// @return equal True if arrays are the same. False otherwise.
+    function equals(bytes memory lhs, bytes memory rhs) internal pure returns (bool equal) {
+        // Keccak gas cost is 30 + numWords * 6. This is a cheap way to compare.
+        return keccak256(lhs) == keccak256(rhs);
+    }
+
+    /// @dev Reads an address from a position in a byte array.
+    /// @param b Byte array containing an address.
+    /// @param index Index in byte array of address.
+    /// @return result address from byte array.
+    function readAddress(bytes memory b, uint256 index) internal pure returns (address result) {
+        if (b.length < index + 20) {
+            LibRichErrorsV08.rrevert(
+                LibBytesRichErrorsV08.InvalidByteOperationError(
+                    LibBytesRichErrorsV08.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsTwentyRequired,
+                    b.length,
+                    index + 20 // 20 is length of address
+                )
+            );
+        }
+
+        // Add offset to index:
+        // 1. Arrays are prefixed by 32-byte length parameter (add 32 to index)
+        // 2. Account for size difference between address length and 32-byte storage word (subtract 12 from index)
+        index += 20;
+
+        // Read address from array memory
+        assembly ("memory-safe") {
+            // 1. Add index to address of bytes array
+            // 2. Load 32-byte word from memory
+            result := mload(add(b, index))
+        }
+        return result;
+    }
+
+    /// @dev Writes an address into a specific position in a byte array.
+    /// @param b Byte array to insert address into.
+    /// @param index Index in byte array of address.
+    /// @param input Address to put into byte array.
+    function writeAddress(bytes memory b, uint256 index, address input) internal pure {
+        if (b.length < index + 20) {
+            LibRichErrorsV08.rrevert(
+                LibBytesRichErrorsV08.InvalidByteOperationError(
+                    LibBytesRichErrorsV08.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsTwentyRequired,
+                    b.length,
+                    index + 20 // 20 is length of address
+                )
+            );
+        }
+
+        // Add offset to index:
+        // 1. Arrays are prefixed by 32-byte length parameter (add 32 to index)
+        // 2. Account for size difference between address length and 32-byte storage word (subtract 12 from index)
+        index += 20;
+
+        // Store address into array memory
+        assembly ("memory-safe") {
+            // The address occupies 20 bytes and mstore stores 32 bytes.
+            // First fetch the 32-byte word where we'll be storing the address, then
+            // apply a mask so we have only the bytes in the word that the address will not occupy.
+            // Then combine these bytes with the address and store the 32 bytes back to memory with mstore.
+
+            // 1. Add index to address of bytes array
+            // 2. Load 32-byte word from memory
+            // 3. Apply 12-byte mask to obtain extra bytes occupying word of memory where we'll store the address
+            let neighbors := and(
+                mload(add(b, index)),
+                0xffffffffffffffffffffffff0000000000000000000000000000000000000000
+            )
+
+            // Make sure input address is clean.
+            // (Solidity does not guarantee this)
+            input := and(input, 0xffffffffffffffffffffffffffffffffffffffff)
+
+            // Store the neighbors and address into memory
+            mstore(add(b, index), xor(input, neighbors))
+        }
+    }
+
+    /// @dev Reads a bytes32 value from a position in a byte array.
+    /// @param b Byte array containing a bytes32 value.
+    /// @param index Index in byte array of bytes32 value.
+    /// @return result bytes32 value from byte array.
+    function readBytes32(bytes memory b, uint256 index) internal pure returns (bytes32 result) {
+        if (b.length < index + 32) {
+            LibRichErrorsV08.rrevert(
+                LibBytesRichErrorsV08.InvalidByteOperationError(
+                    LibBytesRichErrorsV08.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsThirtyTwoRequired,
+                    b.length,
+                    index + 32
+                )
+            );
+        }
+
+        // Arrays are prefixed by a 256 bit length parameter
+        index += 32;
+
+        // Read the bytes32 from array memory
+        assembly ("memory-safe") {
+            result := mload(add(b, index))
+        }
+        return result;
+    }
+
+    /// @dev Writes a bytes32 into a specific position in a byte array.
+    /// @param b Byte array to insert <input> into.
+    /// @param index Index in byte array of <input>.
+    /// @param input bytes32 to put into byte array.
+    function writeBytes32(bytes memory b, uint256 index, bytes32 input) internal pure {
+        if (b.length < index + 32) {
+            LibRichErrorsV08.rrevert(
+                LibBytesRichErrorsV08.InvalidByteOperationError(
+                    LibBytesRichErrorsV08.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsThirtyTwoRequired,
+                    b.length,
+                    index + 32
+                )
+            );
+        }
+
+        // Arrays are prefixed by a 256 bit length parameter
+        index += 32;
+
+        // Read the bytes32 from array memory
+        assembly ("memory-safe") {
+            mstore(add(b, index), input)
+        }
+    }
+
+    /// @dev Reads a uint256 value from a position in a byte array.
+    /// @param b Byte array containing a uint256 value.
+    /// @param index Index in byte array of uint256 value.
+    /// @return result uint256 value from byte array.
+    function readUint256(bytes memory b, uint256 index) internal pure returns (uint256 result) {
+        result = uint256(readBytes32(b, index));
+        return result;
+    }
+
+    /// @dev Writes a uint256 into a specific position in a byte array.
+    /// @param b Byte array to insert <input> into.
+    /// @param index Index in byte array of <input>.
+    /// @param input uint256 to put into byte array.
+    function writeUint256(bytes memory b, uint256 index, uint256 input) internal pure {
+        writeBytes32(b, index, bytes32(input));
+    }
+
+    /// @dev Reads an unpadded bytes4 value from a position in a byte array.
+    /// @param b Byte array containing a bytes4 value.
+    /// @param index Index in byte array of bytes4 value.
+    /// @return result bytes4 value from byte array.
+    function readBytes4(bytes memory b, uint256 index) internal pure returns (bytes4 result) {
+        if (b.length < index + 4) {
+            LibRichErrorsV08.rrevert(
+                LibBytesRichErrorsV08.InvalidByteOperationError(
+                    LibBytesRichErrorsV08.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsFourRequired,
+                    b.length,
+                    index + 4
+                )
+            );
+        }
+
+        // Arrays are prefixed by a 32 byte length field
+        index += 32;
+
+        // Read the bytes4 from array memory
+        assembly ("memory-safe") {
+            result := mload(add(b, index))
+        }
+        return result;
+    }
+
+    /// @dev Writes a new length to a byte array.
+    ///      Decreasing length will lead to removing the corresponding lower order bytes from the byte array.
+    ///      Increasing length may lead to appending adjacent in-memory bytes to the end of the byte array.
+    /// @param b Bytes array to write new length to.
+    /// @param length New length of byte array.
+    function writeLength(bytes memory b, uint256 length) internal pure {
+        assembly {
+            mstore(b, length)
+        }
+    }
+}

contracts/utils/contracts/src/v08/LibMathV08.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 
   Copyright 2019 ZeroEx Intl.
@@ -16,31 +17,57 @@
 
 */
 
-pragma solidity ^0.5.9;
+pragma solidity ^0.8;
 
-import "./LibSafeMath.sol";
-import "./LibRichErrors.sol";
-import "./LibMathRichErrors.sol";
+import "./errors/LibRichErrorsV08.sol";
+import "./errors/LibMathRichErrorsV08.sol";
+import "./errors/LibSafeMathRichErrorsV08.sol";
 
-library LibMath {
-    using LibSafeMath for uint256;
+library LibMathV08 {
+    function max256(uint256 a, uint256 b) internal pure returns (uint256) {
+        return a >= b ? a : b;
+    }
+
+    function min256(uint256 a, uint256 b) internal pure returns (uint256) {
+        return a < b ? a : b;
+    }
+
+    function max128(uint128 a, uint128 b) internal pure returns (uint128) {
+        return a >= b ? a : b;
+    }
+
+    function min128(uint128 a, uint128 b) internal pure returns (uint128) {
+        return a < b ? a : b;
+    }
+
+    function safeDowncastToUint128(uint256 a) internal pure returns (uint128) {
+        if (a > type(uint128).max) {
+            LibRichErrorsV08.rrevert(
+                LibSafeMathRichErrorsV08.Uint256DowncastError(
+                    LibSafeMathRichErrorsV08.DowncastErrorCodes.VALUE_TOO_LARGE_TO_DOWNCAST_TO_UINT128,
+                    a
+                )
+            );
+        }
+        return uint128(a);
+    }
 
     /// @dev Calculates partial value given a numerator and denominator rounded down.
     ///      Reverts if rounding error is >= 0.1%
     /// @param numerator Numerator.
     /// @param denominator Denominator.
     /// @param target Value to calculate partial of.
-    /// @return Partial value of target rounded down.
+    /// @return partialAmount Partial value of target rounded down.
     function safeGetPartialAmountFloor(
         uint256 numerator,
         uint256 denominator,
         uint256 target
     ) internal pure returns (uint256 partialAmount) {
         if (isRoundingErrorFloor(numerator, denominator, target)) {
-            LibRichErrors.rrevert(LibMathRichErrors.RoundingError(numerator, denominator, target));
+            LibRichErrorsV08.rrevert(LibMathRichErrorsV08.RoundingError(numerator, denominator, target));
         }
 
-        partialAmount = numerator.safeMul(target).safeDiv(denominator);
+        partialAmount = (numerator * target) / denominator;
         return partialAmount;
     }
 
@@ -49,20 +76,20 @@ library LibMath {
     /// @param numerator Numerator.
     /// @param denominator Denominator.
     /// @param target Value to calculate partial of.
-    /// @return Partial value of target rounded up.
+    /// @return partialAmount Partial value of target rounded up.
     function safeGetPartialAmountCeil(
         uint256 numerator,
         uint256 denominator,
         uint256 target
     ) internal pure returns (uint256 partialAmount) {
         if (isRoundingErrorCeil(numerator, denominator, target)) {
-            LibRichErrors.rrevert(LibMathRichErrors.RoundingError(numerator, denominator, target));
+            LibRichErrorsV08.rrevert(LibMathRichErrorsV08.RoundingError(numerator, denominator, target));
         }
 
         // safeDiv computes `floor(a / b)`. We use the identity (a, b integer):
         //       ceil(a / b) = floor((a + b - 1) / b)
         // To implement `ceil(a / b)` using safeDiv.
-        partialAmount = numerator.safeMul(target).safeAdd(denominator.safeSub(1)).safeDiv(denominator);
+        partialAmount = (numerator * target + (denominator - 1)) / denominator;
 
         return partialAmount;
     }
@@ -71,13 +98,13 @@ library LibMath {
     /// @param numerator Numerator.
     /// @param denominator Denominator.
     /// @param target Value to calculate partial of.
-    /// @return Partial value of target rounded down.
+    /// @return partialAmount Partial value of target rounded down.
     function getPartialAmountFloor(
         uint256 numerator,
         uint256 denominator,
         uint256 target
     ) internal pure returns (uint256 partialAmount) {
-        partialAmount = numerator.safeMul(target).safeDiv(denominator);
+        partialAmount = (numerator * target) / denominator;
         return partialAmount;
     }
 
@@ -85,7 +112,7 @@ library LibMath {
     /// @param numerator Numerator.
     /// @param denominator Denominator.
     /// @param target Value to calculate partial of.
-    /// @return Partial value of target rounded up.
+    /// @return partialAmount Partial value of target rounded up.
     function getPartialAmountCeil(
         uint256 numerator,
         uint256 denominator,
@@ -94,7 +121,7 @@ library LibMath {
         // safeDiv computes `floor(a / b)`. We use the identity (a, b integer):
         //       ceil(a / b) = floor((a + b - 1) / b)
         // To implement `ceil(a / b)` using safeDiv.
-        partialAmount = numerator.safeMul(target).safeAdd(denominator.safeSub(1)).safeDiv(denominator);
+        partialAmount = (numerator * target + (denominator - 1)) / denominator;
 
         return partialAmount;
     }
@@ -103,14 +130,14 @@ library LibMath {
     /// @param numerator Numerator.
     /// @param denominator Denominator.
     /// @param target Value to multiply with numerator/denominator.
-    /// @return Rounding error is present.
+    /// @return isError Rounding error is present.
     function isRoundingErrorFloor(
         uint256 numerator,
         uint256 denominator,
         uint256 target
     ) internal pure returns (bool isError) {
         if (denominator == 0) {
-            LibRichErrors.rrevert(LibMathRichErrors.DivisionByZeroError());
+            LibRichErrorsV08.rrevert(LibMathRichErrorsV08.DivisionByZeroError());
         }
 
         // The absolute rounding error is the difference between the rounded
@@ -140,7 +167,7 @@ library LibMath {
         // so we have a rounding error iff:
         //        1000 * remainder  >=  numerator * target
         uint256 remainder = mulmod(target, numerator, denominator);
-        isError = remainder.safeMul(1000) >= numerator.safeMul(target);
+        isError = remainder * 1000 >= numerator * target;
         return isError;
     }
 
@@ -148,14 +175,14 @@ library LibMath {
     /// @param numerator Numerator.
     /// @param denominator Denominator.
     /// @param target Value to multiply with numerator/denominator.
-    /// @return Rounding error is present.
+    /// @return isError Rounding error is present.
     function isRoundingErrorCeil(
         uint256 numerator,
         uint256 denominator,
         uint256 target
     ) internal pure returns (bool isError) {
         if (denominator == 0) {
-            LibRichErrors.rrevert(LibMathRichErrors.DivisionByZeroError());
+            LibRichErrorsV08.rrevert(LibMathRichErrorsV08.DivisionByZeroError());
         }
 
         // See the comments in `isRoundingError`.
@@ -167,8 +194,8 @@ library LibMath {
         }
         // Compute remainder as before
         uint256 remainder = mulmod(target, numerator, denominator);
-        remainder = denominator.safeSub(remainder) % denominator;
-        isError = remainder.safeMul(1000) >= numerator.safeMul(target);
+        remainder = denominator - (remainder % denominator);
+        isError = remainder * 1000 >= numerator * target;
         return isError;
     }
 }

contracts/utils/contracts/src/v08/OwnableV08.sol

@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2019 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.8;
+
+import "./interfaces/IOwnableV08.sol";
+import "./errors/LibRichErrorsV08.sol";
+import "./errors/LibOwnableRichErrorsV08.sol";
+
+contract OwnableV08 is IOwnableV08 {
+    /// @dev The owner of this contract.
+    /// @return 0 The owner address.
+    address public override owner;
+
+    constructor() {
+        owner = msg.sender;
+    }
+
+    modifier onlyOwner() {
+        _assertSenderIsOwner();
+        _;
+    }
+
+    /// @dev Change the owner of this contract.
+    /// @param newOwner New owner address.
+    function transferOwnership(address newOwner) public override onlyOwner {
+        if (newOwner == address(0)) {
+            LibRichErrorsV08.rrevert(LibOwnableRichErrorsV08.TransferOwnerToZeroError());
+        } else {
+            owner = newOwner;
+            emit OwnershipTransferred(msg.sender, newOwner);
+        }
+    }
+
+    function _assertSenderIsOwner() internal view {
+        if (msg.sender != owner) {
+            LibRichErrorsV08.rrevert(LibOwnableRichErrorsV08.OnlyOwnerError(msg.sender, owner));
+        }
+    }
+}

contracts/utils/contracts/src/v08/ReentrancyGuardV08.sol

@@ -17,12 +17,12 @@
 
 */
 
-pragma solidity ^0.6.5;
+pragma solidity ^0.8;
 
-import "./errors/LibReentrancyGuardRichErrorsV06.sol";
-import "./errors/LibRichErrorsV06.sol";
+import "./errors/LibReentrancyGuardRichErrorsV08.sol";
+import "./errors/LibRichErrorsV08.sol";
 
-contract ReentrancyGuardV06 {
+contract ReentrancyGuardV08 {
     // Locked state of mutex.
     bool private _locked = false;
 
@@ -37,7 +37,7 @@ contract ReentrancyGuardV06 {
     function _lockMutexOrThrowIfAlreadyLocked() internal {
         // Ensure mutex is unlocked.
         if (_locked) {
-            LibRichErrorsV06.rrevert(LibReentrancyGuardRichErrorsV06.IllegalReentrancyError());
+            LibRichErrorsV08.rrevert(LibReentrancyGuardRichErrorsV08.IllegalReentrancyError());
         }
         // Lock mutex.
         _locked = true;

contracts/utils/contracts/src/v08/errors/LibAuthorizableRichErrorsV08.sol

@@ -1,6 +1,7 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 
-  Copyright 2019 ZeroEx Intl.
+  Copyright 2020 ZeroEx Intl.
 
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
@@ -16,9 +17,9 @@
 
 */
 
-pragma solidity ^0.5.9;
+pragma solidity ^0.8;
 
-library LibAuthorizableRichErrors {
+library LibAuthorizableRichErrorsV08 {
     // bytes4(keccak256("AuthorizedAddressMismatchError(address,address)"))
     bytes4 internal constant AUTHORIZED_ADDRESS_MISMATCH_ERROR_SELECTOR = 0x140a84db;
 

contracts/utils/contracts/src/v08/errors/LibBytesRichErrorsV08.sol

@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.8;
+
+library LibBytesRichErrorsV08 {
+    enum InvalidByteOperationErrorCodes {
+        FromLessThanOrEqualsToRequired,
+        ToLessThanOrEqualsLengthRequired,
+        LengthGreaterThanZeroRequired,
+        LengthGreaterThanOrEqualsFourRequired,
+        LengthGreaterThanOrEqualsTwentyRequired,
+        LengthGreaterThanOrEqualsThirtyTwoRequired,
+        LengthGreaterThanOrEqualsNestedBytesLengthRequired,
+        DestinationLengthGreaterThanOrEqualSourceLengthRequired
+    }
+
+    // bytes4(keccak256("InvalidByteOperationError(uint8,uint256,uint256)"))
+    bytes4 internal constant INVALID_BYTE_OPERATION_ERROR_SELECTOR = 0x28006595;
+
+    function InvalidByteOperationError(
+        InvalidByteOperationErrorCodes errorCode,
+        uint256 offset,
+        uint256 required
+    ) internal pure returns (bytes memory) {
+        return abi.encodeWithSelector(INVALID_BYTE_OPERATION_ERROR_SELECTOR, errorCode, offset, required);
+    }
+}

contracts/utils/contracts/src/v08/errors/LibMathRichErrorsV08.sol

@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.8;
+
+library LibMathRichErrorsV08 {
+    // bytes4(keccak256("DivisionByZeroError()"))
+    bytes internal constant DIVISION_BY_ZERO_ERROR = hex"a791837c";
+
+    // bytes4(keccak256("RoundingError(uint256,uint256,uint256)"))
+    bytes4 internal constant ROUNDING_ERROR_SELECTOR = 0x339f3de2;
+
+    function DivisionByZeroError() internal pure returns (bytes memory) {
+        return DIVISION_BY_ZERO_ERROR;
+    }
+
+    function RoundingError(
+        uint256 numerator,
+        uint256 denominator,
+        uint256 target
+    ) internal pure returns (bytes memory) {
+        return abi.encodeWithSelector(ROUNDING_ERROR_SELECTOR, numerator, denominator, target);
+    }
+}

contracts/utils/contracts/src/v08/errors/LibOwnableRichErrorsV08.sol

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+pragma solidity ^0.8;
+
+library LibOwnableRichErrorsV08 {
+    // bytes4(keccak256("OnlyOwnerError(address,address)"))
+    bytes4 internal constant ONLY_OWNER_ERROR_SELECTOR = 0x1de45ad1;
+
+    // bytes4(keccak256("TransferOwnerToZeroError()"))
+    bytes internal constant TRANSFER_OWNER_TO_ZERO_ERROR_BYTES = hex"e69edc3e";
+
+    function OnlyOwnerError(address sender, address owner) internal pure returns (bytes memory) {
+        return abi.encodeWithSelector(ONLY_OWNER_ERROR_SELECTOR, sender, owner);
+    }
+
+    function TransferOwnerToZeroError() internal pure returns (bytes memory) {
+        return TRANSFER_OWNER_TO_ZERO_ERROR_BYTES;
+    }
+}

contracts/utils/contracts/src/v08/errors/LibReentrancyGuardRichErrorsV08.sol

@@ -1,6 +1,7 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 
-  Copyright 2019 ZeroEx Intl.
+  Copyright 2020 ZeroEx Intl.
 
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
@@ -16,14 +17,13 @@
 
 */
 
-pragma solidity ^0.5.9;
+pragma solidity ^0.8;
 
-import "../src/LibAddress.sol";
+library LibReentrancyGuardRichErrorsV08 {
+    // bytes4(keccak256("IllegalReentrancyError()"))
+    bytes internal constant ILLEGAL_REENTRANCY_ERROR_SELECTOR_BYTES = hex"0c3b823f";
 
-contract TestLibAddress {
-    using LibAddress for address;
-
-    function externalIsContract(address account) external view returns (bool) {
-        return account.isContract();
+    function IllegalReentrancyError() internal pure returns (bytes memory) {
+        return ILLEGAL_REENTRANCY_ERROR_SELECTOR_BYTES;
     }
 }

contracts/utils/contracts/src/v08/errors/LibRichErrorsV08.sol

@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.8;
+
+library LibRichErrorsV08 {
+    // bytes4(keccak256("Error(string)"))
+    bytes4 internal constant STANDARD_ERROR_SELECTOR = 0x08c379a0;
+
+    /// @dev ABI encode a standard, string revert error payload.
+    ///      This is the same payload that would be included by a `revert(string)`
+    ///      solidity statement. It has the function signature `Error(string)`.
+    /// @param message The error string.
+    /// @return The ABI encoded error.
+    function StandardError(string memory message) internal pure returns (bytes memory) {
+        return abi.encodeWithSelector(STANDARD_ERROR_SELECTOR, bytes(message));
+    }
+
+    /// @dev Reverts an encoded rich revert reason `errorData`.
+    /// @param errorData ABI encoded error data.
+    function rrevert(bytes memory errorData) internal pure {
+        assembly ("memory-safe") {
+            revert(add(errorData, 0x20), mload(errorData))
+        }
+    }
+}

contracts/utils/contracts/src/v08/errors/LibSafeMathRichErrorsV08.sol

@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.8;
+
+library LibSafeMathRichErrorsV08 {
+    // bytes4(keccak256("Uint256BinOpError(uint8,uint256,uint256)"))
+    bytes4 internal constant UINT256_BINOP_ERROR_SELECTOR = 0xe946c1bb;
+
+    // bytes4(keccak256("Uint256DowncastError(uint8,uint256)"))
+    bytes4 internal constant UINT256_DOWNCAST_ERROR_SELECTOR = 0xc996af7b;
+
+    enum BinOpErrorCodes {
+        ADDITION_OVERFLOW,
+        MULTIPLICATION_OVERFLOW,
+        SUBTRACTION_UNDERFLOW,
+        DIVISION_BY_ZERO
+    }
+
+    enum DowncastErrorCodes {
+        VALUE_TOO_LARGE_TO_DOWNCAST_TO_UINT32,
+        VALUE_TOO_LARGE_TO_DOWNCAST_TO_UINT64,
+        VALUE_TOO_LARGE_TO_DOWNCAST_TO_UINT96,
+        VALUE_TOO_LARGE_TO_DOWNCAST_TO_UINT128
+    }
+
+    function Uint256BinOpError(BinOpErrorCodes errorCode, uint256 a, uint256 b) internal pure returns (bytes memory) {
+        return abi.encodeWithSelector(UINT256_BINOP_ERROR_SELECTOR, errorCode, a, b);
+    }
+
+    function Uint256DowncastError(DowncastErrorCodes errorCode, uint256 a) internal pure returns (bytes memory) {
+        return abi.encodeWithSelector(UINT256_DOWNCAST_ERROR_SELECTOR, errorCode, a);
+    }
+}

contracts/utils/contracts/src/v08/interfaces/IAuthorizableV08.sol

@@ -1,6 +1,7 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 
-  Copyright 2019 ZeroEx Intl.
+  Copyright 2020 ZeroEx Intl.
 
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
@@ -16,11 +17,11 @@
 
 */
 
-pragma solidity ^0.5.9;
+pragma solidity ^0.8;
 
-import "./IOwnable.sol";
+import "./IOwnableV08.sol";
 
-contract IAuthorizable is IOwnable {
+interface IAuthorizableV08 is IOwnableV08 {
     // Event logged when a new address is authorized.
     event AuthorizedAddressAdded(address indexed target, address indexed caller);
 
@@ -41,6 +42,16 @@ contract IAuthorizable is IOwnable {
     function removeAuthorizedAddressAtIndex(address target, uint256 index) external;
 
     /// @dev Gets all authorized addresses.
-    /// @return Array of authorized addresses.
-    function getAuthorizedAddresses() external view returns (address[] memory);
+    /// @return authorizedAddresses Array of authorized addresses.
+    function getAuthorizedAddresses() external view returns (address[] memory authorizedAddresses);
+
+    /// @dev Whether an adderss is authorized to call privileged functions.
+    /// @param addr Address to query.
+    /// @return isAuthorized Whether the address is authorized.
+    function authorized(address addr) external view returns (bool isAuthorized);
+
+    /// @dev All addresseses authorized to call privileged functions.
+    /// @param idx Index of authorized address.
+    /// @return addr Authorized address.
+    function authorities(uint256 idx) external view returns (address addr);
 }

contracts/utils/contracts/src/v08/interfaces/IOwnableV08.sol

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.8;
+
+interface IOwnableV08 {
+    /// @dev Emitted by Ownable when ownership is transferred.
+    /// @param previousOwner The previous owner of the contract.
+    /// @param newOwner The new owner of the contract.
+    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
+
+    /// @dev Transfers ownership of the contract to a new address.
+    /// @param newOwner The address that will become the owner.
+    function transferOwnership(address newOwner) external;
+
+    /// @dev The owner of this contract.
+    /// @return ownerAddress The owner address.
+    function owner() external view returns (address ownerAddress);
+}

contracts/utils/contracts/test/TestAuthorizable.sol

@@ -1,25 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "../src/Authorizable.sol";
-
-contract TestAuthorizable is Authorizable {
-    function onlyAuthorizedFn() external view onlyAuthorized {}
-}

contracts/utils/contracts/test/TestLibAddressArray.sol

@@ -1,89 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.5;
-
-import "../src/LibAddressArray.sol";
-
-contract TestLibAddressArray {
-    using LibAddressArray for address[];
-
-    /// @dev Append a new address to an array of addresses.
-    ///      The `addressArray` may need to be reallocated to make space
-    ///      for the new address. Because of this we return the resulting
-    ///      memory location of `addressArray`.
-    /// @param addressArray Array of addresses.
-    /// @param addressToAppend  Address to append.
-    /// @return Array of addresses: [... addressArray, addressToAppend]
-    function publicAppend(
-        address[] memory addressArray,
-        address addressToAppend
-    ) public pure returns (address[] memory) {
-        return addressArray.append(addressToAppend);
-    }
-
-    /// @dev Moves the free memory pointer by `freeMemOffset` bytes,
-    ///      then performs the append.
-    ///      This tests the behavior of the address array being reallocated if
-    ///      the memory immediately after the old array is claimed.
-    /// @param addressArray Array of addresses.
-    /// @param freeMemOffset Number of (signed) bytes to offset the free memory pointer (0x40).
-    /// @param addressToAppend Address to append.
-    /// @return The new address array.
-    /// @return The memory address of the old address array.
-    /// @return The memory address of the new address array.
-    function testAppendRealloc(
-        address[] memory addressArray,
-        int256 freeMemOffset,
-        address addressToAppend
-    ) public pure returns (address[] memory result, uint256 oldArrayMemStart, uint256 newArrayMemStart) {
-        assembly {
-            // Remember the original memory address of the array.
-            oldArrayMemStart := addressArray
-            // Move the free memory pointer.
-            mstore(0x40, add(mload(0x40), freeMemOffset))
-        }
-
-        // Call append.
-        result = addressArray.append(addressToAppend);
-
-        // Get the new array memory address.
-        assembly {
-            newArrayMemStart := result
-        }
-    }
-
-    /// @dev Checks if an address array contains the target address.
-    /// @param addressArray Array of addresses.
-    /// @param target Address to search for in array.
-    /// @return True if the addressArray contains the target.
-    function publicContains(address[] memory addressArray, address target) public pure returns (bool success) {
-        return addressArray.contains(target);
-    }
-
-    /// @dev Finds the index of an address within an array.
-    /// @param addressArray Array of addresses.
-    /// @param target Address to search for in array.
-    /// @return Existence and index of the target in the array.
-    function publicIndexOf(
-        address[] memory addressArray,
-        address target
-    ) public pure returns (bool success, uint256 index) {
-        (success, index) = addressArray.indexOf(target);
-    }
-}

contracts/utils/contracts/test/TestLibEIP712.sol

@@ -1,36 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "../src/LibEIP712.sol";
-
-contract TestLibEIP712 {
-    function externalHashEIP712DomainSeperator(
-        string calldata name,
-        string calldata version,
-        uint256 chainid,
-        address verifyingcontractaddress
-    ) external pure returns (bytes32) {
-        return LibEIP712.hashEIP712Domain(name, version, chainid, verifyingcontractaddress);
-    }
-
-    function externalHashEIP712Message(bytes32 eip712DomainHash, bytes32 hashStruct) external pure returns (bytes32) {
-        return LibEIP712.hashEIP712Message(eip712DomainHash, hashStruct);
-    }
-}

contracts/utils/contracts/test/TestLibMath.sol

@@ -1,104 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "../src/LibMath.sol";
-
-contract TestLibMath {
-    /// @dev Calculates partial value given a numerator and denominator.
-    ///      Reverts if rounding error is >= 0.1%
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target.
-    function safeGetPartialAmountFloor(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) public pure returns (uint256 partialAmount) {
-        return LibMath.safeGetPartialAmountFloor(numerator, denominator, target);
-    }
-
-    /// @dev Calculates partial value given a numerator and denominator.
-    ///      Reverts if rounding error is >= 0.1%
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target.
-    function safeGetPartialAmountCeil(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) public pure returns (uint256 partialAmount) {
-        return LibMath.safeGetPartialAmountCeil(numerator, denominator, target);
-    }
-
-    /// @dev Calculates partial value given a numerator and denominator.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target.
-    function getPartialAmountFloor(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) public pure returns (uint256 partialAmount) {
-        return LibMath.getPartialAmountFloor(numerator, denominator, target);
-    }
-
-    /// @dev Calculates partial value given a numerator and denominator.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target.
-    function getPartialAmountCeil(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) public pure returns (uint256 partialAmount) {
-        return LibMath.getPartialAmountCeil(numerator, denominator, target);
-    }
-
-    /// @dev Checks if rounding error >= 0.1%.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to multiply with numerator/denominator.
-    /// @return Rounding error is present.
-    function isRoundingErrorFloor(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) public pure returns (bool isError) {
-        return LibMath.isRoundingErrorFloor(numerator, denominator, target);
-    }
-
-    /// @dev Checks if rounding error >= 0.1%.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to multiply with numerator/denominator.
-    /// @return Rounding error is present.
-    function isRoundingErrorCeil(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) public pure returns (bool isError) {
-        return LibMath.isRoundingErrorCeil(numerator, denominator, target);
-    }
-}

contracts/utils/contracts/test/TestLogDecoding.sol

@@ -1,43 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.5;
-
-import "./TestLogDecodingDownstream.sol";
-
-contract TestLogDecoding {
-    /// @dev arbitrary event; fields to not matter.
-    event TestEvent(uint256 foo, bytes bar, string car);
-
-    /// @dev Emits a local event
-    function emitEvent() public {
-        emit TestEvent(256, hex"1234", "4321");
-    }
-
-    /// @dev Emits an event in a downstream contract
-    function emitEventDownstream() public {
-        TestLogDecodingDownstream testLogDecodingDownstream = new TestLogDecodingDownstream();
-        ITestLogDecodingDownstream(testLogDecodingDownstream).emitEvent();
-    }
-
-    /// @dev Emits a local event and a downstream event
-    function emitEventsLocalAndDownstream() public {
-        emitEvent();
-        emitEventDownstream();
-    }
-}

contracts/utils/contracts/test/TestLogDecodingDownstream.sol

@@ -1,37 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.5;
-
-contract ITestLogDecodingDownstream {
-    /// @dev Emits a local event
-    function emitEvent() external;
-}
-
-contract TestLogDecodingDownstream is ITestLogDecodingDownstream {
-    /// @dev event with fields different than those in `TestLogDecoding.TestEvent`
-    /// Note: do not include this in the interface
-    /// For testing, we want to emit an event that is
-    /// not known by the calling contract.
-    event TestEvent2(uint256 lorem, string ipsum);
-
-    /// @dev Emits a local event
-    function emitEvent() external {
-        emit TestEvent2(256, "4321");
-    }
-}

contracts/utils/contracts/test/TestRefundable.sol

@@ -1,49 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "../src/Refundable.sol";
-
-contract TestRefundable is Refundable {
-    function refundNonZeroBalanceExternal() external payable {
-        _refundNonZeroBalance();
-    }
-
-    function setShouldNotRefund(bool shouldNotRefundNew) external {
-        _shouldNotRefund = shouldNotRefundNew;
-    }
-
-    function getShouldNotRefund() external view returns (bool) {
-        return _shouldNotRefund;
-    }
-
-    function refundFinalBalanceFunction() public payable refundFinalBalance {}
-
-    function disableRefundUntilEndFunction() public payable disableRefundUntilEnd {}
-
-    function nestedDisableRefundUntilEndFunction() public payable disableRefundUntilEnd returns (uint256) {
-        disableRefundUntilEndFunction();
-        return address(this).balance;
-    }
-
-    function mixedRefundModifierFunction() public payable disableRefundUntilEnd returns (uint256) {
-        refundFinalBalanceFunction();
-        return address(this).balance;
-    }
-}

contracts/utils/contracts/test/TestRefundableReceiver.sol

@@ -1,154 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "./TestRefundable.sol";
-
-contract TestRefundableReceiver {
-    /// @dev A payable fallback function is necessary to receive refunds from the `TestRefundable` contract.
-    ///      This function ensures that zero value is not sent to the contract, which tests the feature of
-    ///      of the `refundNonzeroBalance` that doesn't transfer if the balance is zero.
-    function() external payable {
-        // Ensure that a value of zero was not transferred to the contract.
-        require(msg.value != 0, "Zero value should not be sent to this contract.");
-    }
-
-    /// @dev This function tests the behavior of the `refundNonzeroBalance` function by checking whether or
-    ///      not the `callCounter` state variable changes after the `refundNonzeroBalance` is called.
-    /// @param testRefundable The TestRefundable that should be tested against.
-    function testRefundNonZeroBalance(TestRefundable testRefundable) external payable {
-        // Call `refundNonzeroBalance()` and forward all of the eth sent to the contract.
-        testRefundable.refundNonZeroBalanceExternal.value(msg.value)();
-
-        // If the value sent was nonzero, a check that a refund was received will be executed. Otherwise, the fallback
-        // function contains a check that will fail in the event that a value of zero was sent to the contract.
-        if (msg.value > 0) {
-            // Ensure that a full refund was provided to this contract.
-            require(address(this).balance == msg.value, "A full refund was not provided by `refundNonzeroBalance`");
-        }
-    }
-
-    /// @dev This function tests the behavior to a simple call to `refundFinalBalanceFunction`. This
-    ///      test will verify that the correct refund was provided after the call (depending on whether
-    ///      a refund should be provided), and it will ensure that the `shouldNotRefund` state variable
-    ///      remains unaltered after the function call.
-    /// @param testRefundable The TestRefundable that should be tested against.
-    /// @param shouldNotRefund The value that shouldNotRefund should be set to before the call to TestRefundable.
-    function testRefundFinalBalance(TestRefundable testRefundable, bool shouldNotRefund) external payable {
-        // Set `shouldNotRefund` to the specified bool.
-        testRefundable.setShouldNotRefund(shouldNotRefund);
-
-        // Call `refundFinalBalanceFunction` and forward all value from the contract.
-        testRefundable.refundFinalBalanceFunction.value(msg.value)();
-
-        // Assert that the expected refunds happened and that the `shouldNotRefund` value was
-        // set back to an unaltered state after the call.
-        requireCorrectFinalBalancesAndState(testRefundable, shouldNotRefund);
-    }
-
-    /// @dev This function tests the behavior to a simple call to `disableRefundUntilEndFunction`. This
-    ///      test will verify that the correct refund was provided after the call (depending on whether
-    ///      a refund should be provided), and it will ensure that the `shouldNotRefund` state variable
-    ///      remains unaltered after the function call.
-    /// @param testRefundable The TestRefundable that should be tested against.
-    /// @param shouldNotRefund The value that shouldNotRefund should be set to before the call to TestRefundable.
-    function testDisableRefundUntilEnd(TestRefundable testRefundable, bool shouldNotRefund) external payable {
-        // Set `shouldNotRefund` to the specified bool.
-        testRefundable.setShouldNotRefund(shouldNotRefund);
-
-        // Call `disableRefundUntilEndFunction` and forward all value from the contract.
-        testRefundable.disableRefundUntilEndFunction.value(msg.value)();
-
-        // Assert that the expected refunds happened and that the `shouldNotRefund` value was
-        // set back to an unaltered state after the call.
-        requireCorrectFinalBalancesAndState(testRefundable, shouldNotRefund);
-    }
-
-    /// @dev This function tests the behavior of a call to a function that has the `disableRefundUntilEndFunction`.
-    ///      The function that is called also uses the `disableRefundUntilEndFunction`, so this function's role is
-    ///      to verify that both the inner and outer modifiers worked correctly.
-    /// @param testRefundable The TestRefundable that should be tested against.
-    /// @param shouldNotRefund The value that shouldNotRefund should be set to before the call to TestRefundable.
-    function testNestedDisableRefundUntilEnd(TestRefundable testRefundable, bool shouldNotRefund) external payable {
-        // Set `shouldNotRefund` to the specified bool.
-        testRefundable.setShouldNotRefund(shouldNotRefund);
-
-        // Call `nestedDisableRefundUntilEndFunction` and forward all value from the contract.
-        uint256 balanceWithinCall = testRefundable.nestedDisableRefundUntilEndFunction.value(msg.value)();
-
-        // Ensure that the balance within the call was equal to `msg.value` since the inner refund should
-        // not have been triggered regardless of the value of `shouldNotRefund`.
-        require(balanceWithinCall == msg.value, "Incorrect inner balance");
-
-        // Assert that the expected refunds happened and that the `shouldNotRefund` value was
-        // set back to an unaltered state after the call.
-        requireCorrectFinalBalancesAndState(testRefundable, shouldNotRefund);
-    }
-
-    /// @dev This function tests the behavior of a call to a function that has the `disableRefundUntilEndFunction`.
-    ///      The function that is called uses the `refundFinalBalanceFunction`, so this function's role is
-    ///      to verify that both the inner and outer modifiers worked correctly.
-    /// @param testRefundable The TestRefundable that should be tested against.
-    /// @param shouldNotRefund The value that shouldNotRefund should be set to before the call to TestRefundable.
-    function testMixedRefunds(TestRefundable testRefundable, bool shouldNotRefund) external payable {
-        // Set `shouldNotRefund` to the specified bool.
-        testRefundable.setShouldNotRefund(shouldNotRefund);
-
-        // Call `mixedRefundModifierFunction` and forward all value from the contract.
-        uint256 balanceWithinCall = testRefundable.mixedRefundModifierFunction.value(msg.value)();
-
-        // Ensure that the balance within the call was equal to `msg.value` since the inner refund should
-        // not have been triggered regardless of the value of `shouldNotRefund`.
-        require(balanceWithinCall == msg.value, "Incorrect inner balance");
-
-        // Assert that the expected refunds happened and that the `shouldNotRefund` value was
-        // set back to an unaltered state after the call.
-        requireCorrectFinalBalancesAndState(testRefundable, shouldNotRefund);
-    }
-
-    /// @dev This helper function verifies the final balances of this receiver contract and a specified
-    ///      refundable contract and verifies that the `shouldNotRefund` value remains unaltered.
-    /// @param testRefundable The TestRefundable that should be tested against.
-    /// @param shouldNotRefund The value that shouldNotRefund was set to before the call to TestRefundable.
-    function requireCorrectFinalBalancesAndState(TestRefundable testRefundable, bool shouldNotRefund) internal {
-        // If `shouldNotRefund` was true, then this contract should have a balance of zero,
-        // and `testRefundable` should have a balance of `msg.value`. Otherwise, the opposite
-        // should be true.
-        if (shouldNotRefund) {
-            // Ensure that this contract's balance is zero.
-            require(address(this).balance == 0, "Incorrect balance for TestRefundableReceiver");
-
-            // Ensure that the other contract's balance is equal to `msg.value`.
-            require(address(testRefundable).balance == msg.value, "Incorrect balance for TestRefundable");
-        } else {
-            // Ensure that this contract's balance is `msg.value`.
-            require(address(this).balance == msg.value, "Incorrect balance for TestRefundableReceiver");
-
-            // Ensure that the other contract's balance is equal to zero.
-            require(address(testRefundable).balance == 0, "Incorrect balance for TestRefundable");
-        }
-
-        // Ensure that `shouldNotRefund` in TestRefundable is set to the parameter `shouldNotRefund`
-        // after the call (i.e. the value didn't change during the function call).
-        require(testRefundable.getShouldNotRefund() == shouldNotRefund, "Incorrect shouldNotRefund value");
-
-        // Drain the contract of funds so that subsequent tests don't have to account for leftover ether.
-        msg.sender.transfer(address(this).balance);
-    }
-}

contracts/utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-utils",
-    "version": "4.8.34",
+    "version": "4.8.38",
     "engines": {
         "node": ">=6.12"
     },
@@ -15,7 +15,6 @@
         "pre_build": "run-s compile contracts:gen generate_contract_wrappers contracts:copy",
         "test": "yarn run_mocha",
         "rebuild_and_test": "run-s build test",
-        "test:coverage": "SOLIDITY_COVERAGE=true run-s build run_mocha coverage:report:text coverage:report:lcov",
         "test:profiler": "SOLIDITY_PROFILER=true run-s build run_mocha profiler:report:html",
         "test:trace": "SOLIDITY_REVERT_TRACE=true run-s build run_mocha",
         "run_mocha": "mocha --require source-map-support/register --require make-promises-safe 'lib/test/**/*.js' --timeout 100000 --bail --exit",
@@ -25,19 +24,15 @@
         "generate_contract_wrappers": "abi-gen --debug --abis  ${npm_package_config_abis} --output test/generated-wrappers --backend ethers",
         "lint": "eslint src test",
         "fix": "eslint --fix src test",
-        "coverage:report:text": "istanbul report text",
-        "coverage:report:html": "istanbul report html && open coverage/index.html",
         "profiler:report:html": "istanbul report html && open coverage/index.html",
-        "coverage:report:lcov": "istanbul report lcov",
-        "test:circleci": "yarn test",
+        "test:ci": "yarn test",
         "contracts:gen": "contracts-gen generate",
-        "contracts:copy": "contracts-gen copy",
-        "compile:truffle": "truffle compile"
+        "contracts:copy": "contracts-gen copy"
     },
     "config": {
-        "publicInterfaceContracts": "Authorizable,IAuthorizable,IOwnable,LibAddress,LibAddressArray,LibAddressArrayRichErrors,LibAuthorizableRichErrors,LibBytes,LibBytesRichErrors,LibEIP1271,LibEIP712,LibFractions,LibOwnableRichErrors,LibReentrancyGuardRichErrors,LibRichErrors,LibMath,LibMathRichErrors,LibSafeMath,LibSafeMathRichErrors,Ownable,ReentrancyGuard,Refundable",
+        "publicInterfaceContracts": "IOwnable,LibBytes,LibBytesRichErrors,LibOwnableRichErrors,LibReentrancyGuardRichErrors,LibRichErrors,LibSafeMath,LibSafeMathRichErrors,Ownable,ReentrancyGuard",
         "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually.",
-        "abis": "./test/generated-artifacts/@(Authorizable|AuthorizableV06|D18|DeploymentConstants|IAuthorizable|IAuthorizableV06|IOwnable|IOwnableV06|LibAddress|LibAddressArray|LibAddressArrayRichErrors|LibAuthorizableRichErrors|LibAuthorizableRichErrorsV06|LibBytes|LibBytesRichErrors|LibBytesRichErrorsV06|LibBytesV06|LibEIP1271|LibEIP712|LibFractions|LibMath|LibMathRichErrors|LibMathRichErrorsV06|LibMathV06|LibOwnableRichErrors|LibOwnableRichErrorsV06|LibReentrancyGuardRichErrors|LibReentrancyGuardRichErrorsV06|LibRichErrors|LibRichErrorsV06|LibSafeMath|LibSafeMathRichErrors|LibSafeMathRichErrorsV06|LibSafeMathV06|Ownable|OwnableV06|ReentrancyGuard|ReentrancyGuardV06|Refundable|TestAuthorizable|TestLibAddress|TestLibAddressArray|TestLibBytes|TestLibEIP712|TestLibMath|TestLibRichErrors|TestLibSafeMath|TestLogDecoding|TestLogDecodingDownstream|TestOwnable|TestReentrancyGuard|TestRefundable|TestRefundableReceiver).json"
+        "abis": "./test/generated-artifacts/@(AuthorizableV06|AuthorizableV08|IAuthorizableV06|IAuthorizableV08|IOwnable|IOwnableV06|IOwnableV08|LibAuthorizableRichErrorsV06|LibAuthorizableRichErrorsV08|LibBytes|LibBytesRichErrors|LibBytesRichErrorsV06|LibBytesRichErrorsV08|LibBytesV06|LibBytesV08|LibMathRichErrorsV06|LibMathRichErrorsV08|LibMathV06|LibMathV08|LibOwnableRichErrors|LibOwnableRichErrorsV06|LibOwnableRichErrorsV08|LibReentrancyGuardRichErrors|LibReentrancyGuardRichErrorsV06|LibReentrancyGuardRichErrorsV08|LibRichErrors|LibRichErrorsV06|LibRichErrorsV08|LibSafeMath|LibSafeMathRichErrors|LibSafeMathRichErrorsV06|LibSafeMathRichErrorsV08|LibSafeMathV06|Ownable|OwnableV06|OwnableV08|ReentrancyGuard|ReentrancyGuardV08|TestLibBytes|TestLibRichErrors|TestLibSafeMath|TestOwnable|TestReentrancyGuard).json"
     },
     "repository": {
         "type": "git",
@@ -51,7 +46,7 @@
     "devDependencies": {
         "@0x/abi-gen": "^5.8.1",
         "@0x/contracts-gen": "^2.0.48",
-        "@0x/contracts-test-utils": "^5.4.43",
+        "@0x/contracts-test-utils": "^5.4.47",
         "@0x/dev-utils": "^5.0.0",
         "@0x/order-utils": "^10.4.28",
         "@0x/sol-compiler": "^4.8.2",
@@ -75,7 +70,6 @@
         "mocha": "^6.2.0",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
-        "truffle": "^5.0.32",
         "typescript": "4.6.3"
     },
     "dependencies": {

contracts/utils/src/artifacts.ts

@@ -5,20 +5,9 @@
  */
 import { ContractArtifact } from 'ethereum-types';
 
-import * as Authorizable from '../generated-artifacts/Authorizable.json';
-import * as IAuthorizable from '../generated-artifacts/IAuthorizable.json';
 import * as IOwnable from '../generated-artifacts/IOwnable.json';
-import * as LibAddress from '../generated-artifacts/LibAddress.json';
-import * as LibAddressArray from '../generated-artifacts/LibAddressArray.json';
-import * as LibAddressArrayRichErrors from '../generated-artifacts/LibAddressArrayRichErrors.json';
-import * as LibAuthorizableRichErrors from '../generated-artifacts/LibAuthorizableRichErrors.json';
 import * as LibBytes from '../generated-artifacts/LibBytes.json';
 import * as LibBytesRichErrors from '../generated-artifacts/LibBytesRichErrors.json';
-import * as LibEIP1271 from '../generated-artifacts/LibEIP1271.json';
-import * as LibEIP712 from '../generated-artifacts/LibEIP712.json';
-import * as LibFractions from '../generated-artifacts/LibFractions.json';
-import * as LibMath from '../generated-artifacts/LibMath.json';
-import * as LibMathRichErrors from '../generated-artifacts/LibMathRichErrors.json';
 import * as LibOwnableRichErrors from '../generated-artifacts/LibOwnableRichErrors.json';
 import * as LibReentrancyGuardRichErrors from '../generated-artifacts/LibReentrancyGuardRichErrors.json';
 import * as LibRichErrors from '../generated-artifacts/LibRichErrors.json';
@@ -26,28 +15,15 @@ import * as LibSafeMath from '../generated-artifacts/LibSafeMath.json';
 import * as LibSafeMathRichErrors from '../generated-artifacts/LibSafeMathRichErrors.json';
 import * as Ownable from '../generated-artifacts/Ownable.json';
 import * as ReentrancyGuard from '../generated-artifacts/ReentrancyGuard.json';
-import * as Refundable from '../generated-artifacts/Refundable.json';
 export const artifacts = {
-    Authorizable: Authorizable as ContractArtifact,
-    IAuthorizable: IAuthorizable as ContractArtifact,
     IOwnable: IOwnable as ContractArtifact,
-    LibAddress: LibAddress as ContractArtifact,
-    LibAddressArray: LibAddressArray as ContractArtifact,
-    LibAddressArrayRichErrors: LibAddressArrayRichErrors as ContractArtifact,
-    LibAuthorizableRichErrors: LibAuthorizableRichErrors as ContractArtifact,
     LibBytes: LibBytes as ContractArtifact,
     LibBytesRichErrors: LibBytesRichErrors as ContractArtifact,
-    LibEIP1271: LibEIP1271 as ContractArtifact,
-    LibEIP712: LibEIP712 as ContractArtifact,
-    LibFractions: LibFractions as ContractArtifact,
     LibOwnableRichErrors: LibOwnableRichErrors as ContractArtifact,
     LibReentrancyGuardRichErrors: LibReentrancyGuardRichErrors as ContractArtifact,
     LibRichErrors: LibRichErrors as ContractArtifact,
-    LibMath: LibMath as ContractArtifact,
-    LibMathRichErrors: LibMathRichErrors as ContractArtifact,
     LibSafeMath: LibSafeMath as ContractArtifact,
     LibSafeMathRichErrors: LibSafeMathRichErrors as ContractArtifact,
     Ownable: Ownable as ContractArtifact,
     ReentrancyGuard: ReentrancyGuard as ContractArtifact,
-    Refundable: Refundable as ContractArtifact,
 };

contracts/utils/src/reference_functions.ts

@@ -52,77 +52,3 @@ export function safeDiv(a: BigNumber, b: BigNumber): BigNumber {
     }
     return a.dividedToIntegerBy(b);
 }
-
-// LibMath
-
-/**
- * Checks if rounding error >= 0.1% when rounding down.
- */
-export function isRoundingErrorFloor(numerator: BigNumber, denominator: BigNumber, target: BigNumber): boolean {
-    if (denominator.eq(0)) {
-        throw new LibMathRevertErrors.DivisionByZeroError();
-    }
-    if (numerator.eq(0) || target.eq(0)) {
-        return false;
-    }
-    const remainder = numerator.times(target).mod(denominator);
-    // Need to do this separately because solidity evaluates RHS of the comparison expression first.
-    const rhs = safeMul(numerator, target);
-    const lhs = safeMul(remainder, new BigNumber(1000));
-    return lhs.gte(rhs);
-}
-
-/**
- * Checks if rounding error >= 0.1% when rounding up.
- */
-export function isRoundingErrorCeil(numerator: BigNumber, denominator: BigNumber, target: BigNumber): boolean {
-    if (denominator.eq(0)) {
-        throw new LibMathRevertErrors.DivisionByZeroError();
-    }
-    if (numerator.eq(0) || target.eq(0)) {
-        return false;
-    }
-    let remainder = numerator.times(target).mod(denominator);
-    remainder = safeSub(denominator, remainder).mod(denominator);
-    // Need to do this separately because solidity evaluates RHS of the comparison expression first.
-    const rhs = safeMul(numerator, target);
-    const lhs = safeMul(remainder, new BigNumber(1000));
-    return lhs.gte(rhs);
-}
-
-/**
- * Calculates partial value given a numerator and denominator rounded down.
- *      Reverts if rounding error is >= 0.1%
- */
-export function safeGetPartialAmountFloor(numerator: BigNumber, denominator: BigNumber, target: BigNumber): BigNumber {
-    if (isRoundingErrorFloor(numerator, denominator, target)) {
-        throw new LibMathRevertErrors.RoundingError(numerator, denominator, target);
-    }
-    return safeDiv(safeMul(numerator, target), denominator);
-}
-
-/**
- * Calculates partial value given a numerator and denominator rounded down.
- *      Reverts if rounding error is >= 0.1%
- */
-export function safeGetPartialAmountCeil(numerator: BigNumber, denominator: BigNumber, target: BigNumber): BigNumber {
-    if (isRoundingErrorCeil(numerator, denominator, target)) {
-        throw new LibMathRevertErrors.RoundingError(numerator, denominator, target);
-    }
-    return safeDiv(safeAdd(safeMul(numerator, target), safeSub(denominator, new BigNumber(1))), denominator);
-}
-
-/**
- * Calculates partial value given a numerator and denominator rounded down.
- */
-export function getPartialAmountFloor(numerator: BigNumber, denominator: BigNumber, target: BigNumber): BigNumber {
-    return safeDiv(safeMul(numerator, target), denominator);
-}
-
-/**
- * Calculates partial value given a numerator and denominator rounded down.
- */
-export function getPartialAmountCeil(numerator: BigNumber, denominator: BigNumber, target: BigNumber): BigNumber {
-    const sub = safeSub(denominator, new BigNumber(1)); // This is computed first to simulate Solidity's order of operations
-    return safeDiv(safeAdd(safeMul(numerator, target), sub), denominator);
-}

contracts/utils/src/wrappers.ts

@@ -3,20 +3,9 @@
  * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
  * -----------------------------------------------------------------------------
  */
-export * from '../generated-wrappers/authorizable';
-export * from '../generated-wrappers/i_authorizable';
 export * from '../generated-wrappers/i_ownable';
-export * from '../generated-wrappers/lib_address';
-export * from '../generated-wrappers/lib_address_array';
-export * from '../generated-wrappers/lib_address_array_rich_errors';
-export * from '../generated-wrappers/lib_authorizable_rich_errors';
 export * from '../generated-wrappers/lib_bytes';
 export * from '../generated-wrappers/lib_bytes_rich_errors';
-export * from '../generated-wrappers/lib_e_i_p1271';
-export * from '../generated-wrappers/lib_e_i_p712';
-export * from '../generated-wrappers/lib_fractions';
-export * from '../generated-wrappers/lib_math';
-export * from '../generated-wrappers/lib_math_rich_errors';
 export * from '../generated-wrappers/lib_ownable_rich_errors';
 export * from '../generated-wrappers/lib_reentrancy_guard_rich_errors';
 export * from '../generated-wrappers/lib_rich_errors';
@@ -24,4 +13,3 @@ export * from '../generated-wrappers/lib_safe_math';
 export * from '../generated-wrappers/lib_safe_math_rich_errors';
 export * from '../generated-wrappers/ownable';
 export * from '../generated-wrappers/reentrancy_guard';
-export * from '../generated-wrappers/refundable';

contracts/utils/test/artifacts.ts

@@ -5,74 +5,52 @@
  */
 import { ContractArtifact } from 'ethereum-types';
 
-import * as Authorizable from '../test/generated-artifacts/Authorizable.json';
 import * as AuthorizableV06 from '../test/generated-artifacts/AuthorizableV06.json';
-import * as D18 from '../test/generated-artifacts/D18.json';
-import * as DeploymentConstants from '../test/generated-artifacts/DeploymentConstants.json';
-import * as IAuthorizable from '../test/generated-artifacts/IAuthorizable.json';
+import * as AuthorizableV08 from '../test/generated-artifacts/AuthorizableV08.json';
 import * as IAuthorizableV06 from '../test/generated-artifacts/IAuthorizableV06.json';
+import * as IAuthorizableV08 from '../test/generated-artifacts/IAuthorizableV08.json';
 import * as IOwnable from '../test/generated-artifacts/IOwnable.json';
 import * as IOwnableV06 from '../test/generated-artifacts/IOwnableV06.json';
-import * as LibAddress from '../test/generated-artifacts/LibAddress.json';
-import * as LibAddressArray from '../test/generated-artifacts/LibAddressArray.json';
-import * as LibAddressArrayRichErrors from '../test/generated-artifacts/LibAddressArrayRichErrors.json';
-import * as LibAuthorizableRichErrors from '../test/generated-artifacts/LibAuthorizableRichErrors.json';
+import * as IOwnableV08 from '../test/generated-artifacts/IOwnableV08.json';
 import * as LibAuthorizableRichErrorsV06 from '../test/generated-artifacts/LibAuthorizableRichErrorsV06.json';
+import * as LibAuthorizableRichErrorsV08 from '../test/generated-artifacts/LibAuthorizableRichErrorsV08.json';
 import * as LibBytes from '../test/generated-artifacts/LibBytes.json';
 import * as LibBytesRichErrors from '../test/generated-artifacts/LibBytesRichErrors.json';
 import * as LibBytesRichErrorsV06 from '../test/generated-artifacts/LibBytesRichErrorsV06.json';
+import * as LibBytesRichErrorsV08 from '../test/generated-artifacts/LibBytesRichErrorsV08.json';
 import * as LibBytesV06 from '../test/generated-artifacts/LibBytesV06.json';
-import * as LibEIP1271 from '../test/generated-artifacts/LibEIP1271.json';
-import * as LibEIP712 from '../test/generated-artifacts/LibEIP712.json';
-import * as LibFractions from '../test/generated-artifacts/LibFractions.json';
-import * as LibMath from '../test/generated-artifacts/LibMath.json';
-import * as LibMathRichErrors from '../test/generated-artifacts/LibMathRichErrors.json';
+import * as LibBytesV08 from '../test/generated-artifacts/LibBytesV08.json';
 import * as LibMathRichErrorsV06 from '../test/generated-artifacts/LibMathRichErrorsV06.json';
+import * as LibMathRichErrorsV08 from '../test/generated-artifacts/LibMathRichErrorsV08.json';
 import * as LibMathV06 from '../test/generated-artifacts/LibMathV06.json';
+import * as LibMathV08 from '../test/generated-artifacts/LibMathV08.json';
 import * as LibOwnableRichErrors from '../test/generated-artifacts/LibOwnableRichErrors.json';
 import * as LibOwnableRichErrorsV06 from '../test/generated-artifacts/LibOwnableRichErrorsV06.json';
+import * as LibOwnableRichErrorsV08 from '../test/generated-artifacts/LibOwnableRichErrorsV08.json';
 import * as LibReentrancyGuardRichErrors from '../test/generated-artifacts/LibReentrancyGuardRichErrors.json';
 import * as LibReentrancyGuardRichErrorsV06 from '../test/generated-artifacts/LibReentrancyGuardRichErrorsV06.json';
+import * as LibReentrancyGuardRichErrorsV08 from '../test/generated-artifacts/LibReentrancyGuardRichErrorsV08.json';
 import * as LibRichErrors from '../test/generated-artifacts/LibRichErrors.json';
 import * as LibRichErrorsV06 from '../test/generated-artifacts/LibRichErrorsV06.json';
+import * as LibRichErrorsV08 from '../test/generated-artifacts/LibRichErrorsV08.json';
 import * as LibSafeMath from '../test/generated-artifacts/LibSafeMath.json';
 import * as LibSafeMathRichErrors from '../test/generated-artifacts/LibSafeMathRichErrors.json';
 import * as LibSafeMathRichErrorsV06 from '../test/generated-artifacts/LibSafeMathRichErrorsV06.json';
+import * as LibSafeMathRichErrorsV08 from '../test/generated-artifacts/LibSafeMathRichErrorsV08.json';
 import * as LibSafeMathV06 from '../test/generated-artifacts/LibSafeMathV06.json';
 import * as Ownable from '../test/generated-artifacts/Ownable.json';
 import * as OwnableV06 from '../test/generated-artifacts/OwnableV06.json';
+import * as OwnableV08 from '../test/generated-artifacts/OwnableV08.json';
 import * as ReentrancyGuard from '../test/generated-artifacts/ReentrancyGuard.json';
-import * as ReentrancyGuardV06 from '../test/generated-artifacts/ReentrancyGuardV06.json';
-import * as Refundable from '../test/generated-artifacts/Refundable.json';
-import * as TestAuthorizable from '../test/generated-artifacts/TestAuthorizable.json';
-import * as TestLibAddress from '../test/generated-artifacts/TestLibAddress.json';
-import * as TestLibAddressArray from '../test/generated-artifacts/TestLibAddressArray.json';
+import * as ReentrancyGuardV08 from '../test/generated-artifacts/ReentrancyGuardV08.json';
 import * as TestLibBytes from '../test/generated-artifacts/TestLibBytes.json';
-import * as TestLibEIP712 from '../test/generated-artifacts/TestLibEIP712.json';
-import * as TestLibMath from '../test/generated-artifacts/TestLibMath.json';
 import * as TestLibRichErrors from '../test/generated-artifacts/TestLibRichErrors.json';
 import * as TestLibSafeMath from '../test/generated-artifacts/TestLibSafeMath.json';
-import * as TestLogDecoding from '../test/generated-artifacts/TestLogDecoding.json';
-import * as TestLogDecodingDownstream from '../test/generated-artifacts/TestLogDecodingDownstream.json';
 import * as TestOwnable from '../test/generated-artifacts/TestOwnable.json';
 import * as TestReentrancyGuard from '../test/generated-artifacts/TestReentrancyGuard.json';
-import * as TestRefundable from '../test/generated-artifacts/TestRefundable.json';
-import * as TestRefundableReceiver from '../test/generated-artifacts/TestRefundableReceiver.json';
 export const artifacts = {
-    Authorizable: Authorizable as ContractArtifact,
-    D18: D18 as ContractArtifact,
-    DeploymentConstants: DeploymentConstants as ContractArtifact,
-    LibAddress: LibAddress as ContractArtifact,
-    LibAddressArray: LibAddressArray as ContractArtifact,
-    LibAddressArrayRichErrors: LibAddressArrayRichErrors as ContractArtifact,
-    LibAuthorizableRichErrors: LibAuthorizableRichErrors as ContractArtifact,
     LibBytes: LibBytes as ContractArtifact,
     LibBytesRichErrors: LibBytesRichErrors as ContractArtifact,
-    LibEIP1271: LibEIP1271 as ContractArtifact,
-    LibEIP712: LibEIP712 as ContractArtifact,
-    LibFractions: LibFractions as ContractArtifact,
-    LibMath: LibMath as ContractArtifact,
-    LibMathRichErrors: LibMathRichErrors as ContractArtifact,
     LibOwnableRichErrors: LibOwnableRichErrors as ContractArtifact,
     LibReentrancyGuardRichErrors: LibReentrancyGuardRichErrors as ContractArtifact,
     LibRichErrors: LibRichErrors as ContractArtifact,
@@ -80,15 +58,12 @@ export const artifacts = {
     LibSafeMathRichErrors: LibSafeMathRichErrors as ContractArtifact,
     Ownable: Ownable as ContractArtifact,
     ReentrancyGuard: ReentrancyGuard as ContractArtifact,
-    Refundable: Refundable as ContractArtifact,
-    IAuthorizable: IAuthorizable as ContractArtifact,
     IOwnable: IOwnable as ContractArtifact,
     AuthorizableV06: AuthorizableV06 as ContractArtifact,
     LibBytesV06: LibBytesV06 as ContractArtifact,
     LibMathV06: LibMathV06 as ContractArtifact,
     LibSafeMathV06: LibSafeMathV06 as ContractArtifact,
     OwnableV06: OwnableV06 as ContractArtifact,
-    ReentrancyGuardV06: ReentrancyGuardV06 as ContractArtifact,
     LibAuthorizableRichErrorsV06: LibAuthorizableRichErrorsV06 as ContractArtifact,
     LibBytesRichErrorsV06: LibBytesRichErrorsV06 as ContractArtifact,
     LibMathRichErrorsV06: LibMathRichErrorsV06 as ContractArtifact,
@@ -98,18 +73,23 @@ export const artifacts = {
     LibSafeMathRichErrorsV06: LibSafeMathRichErrorsV06 as ContractArtifact,
     IAuthorizableV06: IAuthorizableV06 as ContractArtifact,
     IOwnableV06: IOwnableV06 as ContractArtifact,
-    TestAuthorizable: TestAuthorizable as ContractArtifact,
-    TestLibAddress: TestLibAddress as ContractArtifact,
-    TestLibAddressArray: TestLibAddressArray as ContractArtifact,
+    AuthorizableV08: AuthorizableV08 as ContractArtifact,
+    LibBytesV08: LibBytesV08 as ContractArtifact,
+    LibMathV08: LibMathV08 as ContractArtifact,
+    OwnableV08: OwnableV08 as ContractArtifact,
+    ReentrancyGuardV08: ReentrancyGuardV08 as ContractArtifact,
+    LibAuthorizableRichErrorsV08: LibAuthorizableRichErrorsV08 as ContractArtifact,
+    LibBytesRichErrorsV08: LibBytesRichErrorsV08 as ContractArtifact,
+    LibMathRichErrorsV08: LibMathRichErrorsV08 as ContractArtifact,
+    LibOwnableRichErrorsV08: LibOwnableRichErrorsV08 as ContractArtifact,
+    LibReentrancyGuardRichErrorsV08: LibReentrancyGuardRichErrorsV08 as ContractArtifact,
+    LibRichErrorsV08: LibRichErrorsV08 as ContractArtifact,
+    LibSafeMathRichErrorsV08: LibSafeMathRichErrorsV08 as ContractArtifact,
+    IAuthorizableV08: IAuthorizableV08 as ContractArtifact,
+    IOwnableV08: IOwnableV08 as ContractArtifact,
     TestLibBytes: TestLibBytes as ContractArtifact,
-    TestLibEIP712: TestLibEIP712 as ContractArtifact,
-    TestLibMath: TestLibMath as ContractArtifact,
     TestLibRichErrors: TestLibRichErrors as ContractArtifact,
     TestLibSafeMath: TestLibSafeMath as ContractArtifact,
-    TestLogDecoding: TestLogDecoding as ContractArtifact,
-    TestLogDecodingDownstream: TestLogDecodingDownstream as ContractArtifact,
     TestOwnable: TestOwnable as ContractArtifact,
     TestReentrancyGuard: TestReentrancyGuard as ContractArtifact,
-    TestRefundable: TestRefundable as ContractArtifact,
-    TestRefundableReceiver: TestRefundableReceiver as ContractArtifact,
 };

contracts/utils/test/authorizable.ts

@@ -1,165 +0,0 @@
-import { blockchainTests, constants, expect } from '@0x/contracts-test-utils';
-import { AuthorizableRevertErrors, BigNumber, OwnableRevertErrors } from '@0x/utils';
-import * as _ from 'lodash';
-
-import { artifacts } from './artifacts';
-import { TestAuthorizableContract } from './wrappers';
-
-blockchainTests.resets('Authorizable', env => {
-    let owner: string;
-    let notOwner: string;
-    let address: string;
-    let authorizable: TestAuthorizableContract;
-
-    before(async () => {
-        const accounts = await env.getAccountAddressesAsync();
-        [owner, address, notOwner] = _.slice(accounts, 0, 3);
-        authorizable = await TestAuthorizableContract.deployFrom0xArtifactAsync(
-            artifacts.TestAuthorizable,
-            env.provider,
-            env.txDefaults,
-            artifacts,
-        );
-    });
-
-    describe('addAuthorizedAddress', () => {
-        it('should revert if not called by owner', async () => {
-            const expectedError = new OwnableRevertErrors.OnlyOwnerError(notOwner, owner);
-            const tx = authorizable.addAuthorizedAddress(notOwner).sendTransactionAsync({ from: notOwner });
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should allow owner to add an authorized address', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const isAuthorized = await authorizable.authorized(address).callAsync();
-            expect(isAuthorized).to.be.true();
-        });
-
-        it('should revert if owner attempts to authorize the zero address', async () => {
-            const expectedError = new AuthorizableRevertErrors.ZeroCantBeAuthorizedError();
-            const tx = authorizable.addAuthorizedAddress(constants.NULL_ADDRESS).sendTransactionAsync({ from: owner });
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should revert if owner attempts to authorize a duplicate address', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const expectedError = new AuthorizableRevertErrors.TargetAlreadyAuthorizedError(address);
-            const tx = authorizable.addAuthorizedAddress(address).sendTransactionAsync({ from: owner });
-            return expect(tx).to.revertWith(expectedError);
-        });
-    });
-
-    describe('onlyAuthorized', () => {
-        before(async () => {
-            await authorizable.addAuthorizedAddress(owner).awaitTransactionSuccessAsync({ from: owner });
-        });
-
-        after(async () => {
-            await authorizable.removeAuthorizedAddress(owner).awaitTransactionSuccessAsync({ from: owner });
-        });
-
-        it('should revert if sender is not authorized', async () => {
-            const tx = authorizable.onlyAuthorizedFn().callAsync({ from: notOwner });
-            const expectedError = new AuthorizableRevertErrors.SenderNotAuthorizedError(notOwner);
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should succeed if sender is authorized', async () => {
-            await authorizable.onlyAuthorizedFn().callAsync({ from: owner });
-        });
-    });
-
-    describe('removeAuthorizedAddress', () => {
-        it('should revert if not called by owner', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const expectedError = new OwnableRevertErrors.OnlyOwnerError(notOwner, owner);
-            const tx = authorizable.removeAuthorizedAddress(address).sendTransactionAsync({ from: notOwner });
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should allow owner to remove an authorized address', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            await authorizable.removeAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const isAuthorized = await authorizable.authorized(address).callAsync();
-            expect(isAuthorized).to.be.false();
-        });
-
-        it('should revert if owner attempts to remove an address that is not authorized', async () => {
-            const expectedError = new AuthorizableRevertErrors.TargetNotAuthorizedError(address);
-            const tx = authorizable.removeAuthorizedAddress(address).sendTransactionAsync({ from: owner });
-            return expect(tx).to.revertWith(expectedError);
-        });
-    });
-
-    describe('removeAuthorizedAddressAtIndex', () => {
-        it('should revert if not called by owner', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const index = new BigNumber(0);
-            const expectedError = new OwnableRevertErrors.OnlyOwnerError(notOwner, owner);
-            const tx = authorizable.removeAuthorizedAddressAtIndex(address, index).sendTransactionAsync({
-                from: notOwner,
-            });
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should revert if index is >= authorities.length', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const index = new BigNumber(1);
-            const expectedError = new AuthorizableRevertErrors.IndexOutOfBoundsError(index, index);
-            const tx = authorizable.removeAuthorizedAddressAtIndex(address, index).sendTransactionAsync({
-                from: owner,
-            });
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should revert if owner attempts to remove an address that is not authorized', async () => {
-            const index = new BigNumber(0);
-            const expectedError = new AuthorizableRevertErrors.TargetNotAuthorizedError(address);
-            const tx = authorizable.removeAuthorizedAddressAtIndex(address, index).sendTransactionAsync({
-                from: owner,
-            });
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should revert if address at index does not match target', async () => {
-            const address1 = address;
-            const address2 = notOwner;
-            await authorizable.addAuthorizedAddress(address1).awaitTransactionSuccessAsync({ from: owner });
-            await authorizable.addAuthorizedAddress(address2).awaitTransactionSuccessAsync({ from: owner });
-            const address1Index = new BigNumber(0);
-            const expectedError = new AuthorizableRevertErrors.AuthorizedAddressMismatchError(address1, address2);
-            const tx = authorizable.removeAuthorizedAddressAtIndex(address2, address1Index).sendTransactionAsync({
-                from: owner,
-            });
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should allow owner to remove an authorized address', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const index = new BigNumber(0);
-            await authorizable.removeAuthorizedAddressAtIndex(address, index).awaitTransactionSuccessAsync({
-                from: owner,
-            });
-            const isAuthorized = await authorizable.authorized(address).callAsync();
-            expect(isAuthorized).to.be.false();
-        });
-    });
-
-    describe('getAuthorizedAddresses', () => {
-        it('should return correct authorized addresses', async () => {
-            // Initial Authorities
-            let authorities = await authorizable.getAuthorizedAddresses().callAsync();
-            expect(authorities).to.be.deep.eq([]);
-
-            // Authorities after addition
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            authorities = await authorizable.getAuthorizedAddresses().callAsync();
-            expect(authorities).to.be.deep.eq([address]);
-
-            // Authorities after removal
-            await authorizable.removeAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            authorities = await authorizable.getAuthorizedAddresses().callAsync();
-            expect(authorities).to.be.deep.eq([]);
-        });
-    });
-});

contracts/utils/test/global_hooks.ts

@@ -1,19 +0,0 @@
-import { env, EnvVars } from '@0x/dev-utils';
-
-import { coverage, profiler, provider } from '@0x/contracts-test-utils';
-import { providerUtils } from '@0x/utils';
-
-before('start web3 provider', () => {
-    providerUtils.startProviderEngine(provider);
-});
-after('generate coverage report', async () => {
-    if (env.parseBoolean(EnvVars.SolidityCoverage)) {
-        const coverageSubprovider = coverage.getCoverageSubproviderSingleton();
-        await coverageSubprovider.writeCoverageAsync();
-    }
-    if (env.parseBoolean(EnvVars.SolidityProfiler)) {
-        const profilerSubprovider = profiler.getProfilerSubproviderSingleton();
-        await profilerSubprovider.writeProfilerOutputAsync();
-    }
-    provider.stop();
-});

contracts/utils/test/lib_address.ts

@@ -1,43 +0,0 @@
-import { chaiSetup, provider, txDefaults, web3Wrapper } from '@0x/contracts-test-utils';
-import { BlockchainLifecycle } from '@0x/dev-utils';
-import * as chai from 'chai';
-
-import { artifacts } from './artifacts';
-import { TestLibAddressContract } from './wrappers';
-
-chaiSetup.configure();
-const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-
-describe('LibAddress', () => {
-    let lib: TestLibAddressContract;
-    let nonContract: string;
-
-    before(async () => {
-        await blockchainLifecycle.startAsync();
-        nonContract = (await web3Wrapper.getAvailableAddressesAsync())[0];
-        // Deploy LibAddress
-        lib = await TestLibAddressContract.deployFrom0xArtifactAsync(
-            artifacts.TestLibAddress,
-            provider,
-            txDefaults,
-            {},
-        );
-    });
-
-    after(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-
-    describe('isContract', () => {
-        it('should return false for a non-contract address', async () => {
-            const isContract = await lib.externalIsContract(nonContract).callAsync();
-            expect(isContract).to.be.false();
-        });
-
-        it('should return true for a non-contract address', async () => {
-            const isContract = await lib.externalIsContract(lib.address).callAsync();
-            expect(isContract).to.be.true();
-        });
-    });
-});

contracts/utils/test/lib_address_array.ts

@@ -1,144 +0,0 @@
-import { chaiSetup, provider, randomAddress, txDefaults, web3Wrapper } from '@0x/contracts-test-utils';
-import { BlockchainLifecycle } from '@0x/dev-utils';
-import { BigNumber, LibAddressArrayRevertErrors } from '@0x/utils';
-import * as chai from 'chai';
-import * as _ from 'lodash';
-
-import { artifacts } from './artifacts';
-import { TestLibAddressArrayContract } from './wrappers';
-
-chaiSetup.configure();
-const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-
-describe('LibAddressArray', () => {
-    let lib: TestLibAddressArrayContract;
-
-    before(async () => {
-        await blockchainLifecycle.startAsync();
-        // Deploy LibAddressArray
-        lib = await TestLibAddressArrayContract.deployFrom0xArtifactAsync(
-            artifacts.TestLibAddressArray,
-            provider,
-            txDefaults,
-            artifacts,
-        );
-    });
-    after(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-
-    describe('append', () => {
-        it('should append to empty array', async () => {
-            const addr = randomAddress();
-            const result = await lib.publicAppend([], addr).callAsync();
-            const expected = [addr];
-            expect(result).to.deep.equal(expected);
-        });
-
-        it('should append to non-empty array', async () => {
-            const arr = _.times(3, () => randomAddress());
-            const addr = randomAddress();
-            const expected = [...arr, addr];
-            const result = await lib.publicAppend(arr, addr).callAsync();
-            expect(result).to.deep.equal(expected);
-        });
-
-        it('should revert if the free memory pointer was moved to before the end of the array', async () => {
-            const arr = _.times(3, () => randomAddress());
-            const addr = randomAddress();
-            const freeMemOffset = new BigNumber(-1);
-            const addressArrayEndPtr = new BigNumber(256);
-            const expectedError = new LibAddressArrayRevertErrors.MismanagedMemoryError(
-                addressArrayEndPtr.plus(freeMemOffset),
-                addressArrayEndPtr,
-            );
-            return expect(lib.testAppendRealloc(arr, freeMemOffset, addr).callAsync()).to.revertWith(expectedError);
-        });
-
-        it('should keep the same memory address if free memory pointer does not move', async () => {
-            const arr = _.times(3, () => randomAddress());
-            const addr = randomAddress();
-            const freeMemOffset = new BigNumber(0);
-            const expected = [...arr, addr];
-            const [result, oldArrayMemStart, newArrayMemStart] = await lib
-                .testAppendRealloc(arr, freeMemOffset, addr)
-                .callAsync();
-            expect(result).to.deep.equal(expected);
-            expect(newArrayMemStart).bignumber.to.be.equal(oldArrayMemStart);
-        });
-
-        it('should change memory address if free memory pointer advances', async () => {
-            const arr = _.times(3, () => randomAddress());
-            const addr = randomAddress();
-            const freeMemOffset = new BigNumber(1);
-            const expectedArray = [...arr, addr];
-            const [result, oldArrayMemStart, newArrayMemStart] = await lib
-                .testAppendRealloc(arr, freeMemOffset, addr)
-                .callAsync();
-            // The new location should be the end of the old array + freeMemOffset.
-            const expectedNewArrayMemStart = oldArrayMemStart.plus((arr.length + 1) * 32).plus(freeMemOffset);
-            expect(result).to.deep.equal(expectedArray);
-            expect(newArrayMemStart).bignumber.to.be.equal(expectedNewArrayMemStart);
-        });
-    });
-
-    describe('contains', () => {
-        it('should return false on an empty array', async () => {
-            const addr = randomAddress();
-            const isFound = await lib.publicContains([], addr).callAsync();
-            expect(isFound).to.equal(false);
-        });
-
-        it('should return false on a missing item', async () => {
-            const arr = _.times(3, () => randomAddress());
-            const addr = randomAddress();
-            const isFound = await lib.publicContains(arr, addr).callAsync();
-            expect(isFound).to.equal(false);
-        });
-
-        it('should return true on an included item', async () => {
-            const arr = _.times(4, () => randomAddress());
-            const addr = _.sample(arr) as string;
-            const isFound = await lib.publicContains(arr, addr).callAsync();
-            expect(isFound).to.equal(true);
-        });
-
-        it('should return true on the only item in the array', async () => {
-            const arr = _.times(1, () => randomAddress());
-            const isFound = await lib.publicContains(arr, arr[0]).callAsync();
-            expect(isFound).to.equal(true);
-        });
-    });
-
-    describe('indexOf', () => {
-        it('should fail on an empty array', async () => {
-            const addr = randomAddress();
-            const [isSuccess] = await lib.publicIndexOf([], addr).callAsync();
-            expect(isSuccess).to.equal(false);
-        });
-
-        it('should fail on a missing item', async () => {
-            const arr = _.times(3, () => randomAddress());
-            const addr = randomAddress();
-            const [isSuccess] = await lib.publicIndexOf(arr, addr).callAsync();
-            expect(isSuccess).to.equal(false);
-        });
-
-        it('should succeed on an included item', async () => {
-            const arr = _.times(4, () => randomAddress());
-            const expectedIndexOf = _.random(0, arr.length - 1);
-            const addr = arr[expectedIndexOf];
-            const [isSuccess, index] = await lib.publicIndexOf(arr, addr).callAsync();
-            expect(isSuccess).to.equal(true);
-            expect(index).bignumber.to.equal(expectedIndexOf);
-        });
-
-        it('should succeed on the only item in the array', async () => {
-            const arr = _.times(1, () => randomAddress());
-            const [isSuccess, index] = await lib.publicIndexOf(arr, arr[0]).callAsync();
-            expect(isSuccess).to.equal(true);
-            expect(index).bignumber.to.equal(0);
-        });
-    });
-});

contracts/utils/test/lib_eip712.ts

@@ -1,108 +0,0 @@
-import { chaiSetup, constants, provider, txDefaults, web3Wrapper } from '@0x/contracts-test-utils';
-import { BlockchainLifecycle } from '@0x/dev-utils';
-import { BigNumber, hexUtils, signTypedDataUtils } from '@0x/utils';
-import * as chai from 'chai';
-import * as _ from 'lodash';
-
-import { artifacts } from './artifacts';
-import { TestLibEIP712Contract } from './wrappers';
-
-chaiSetup.configure();
-const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-
-describe('LibEIP712', () => {
-    let lib: TestLibEIP712Contract;
-
-    before(async () => {
-        await blockchainLifecycle.startAsync();
-        // Deploy LibEIP712
-        lib = await TestLibEIP712Contract.deployFrom0xArtifactAsync(artifacts.TestLibEIP712, provider, txDefaults, {});
-    });
-
-    after(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-
-    /**
-     * Tests a specific instance of EIP712 domain hashing.
-     * @param lib The LibEIP712 contract to call.
-     * @param name The name of the domain.
-     * @param version The version of the domain.
-     * @param chainId The chain id of the domain.
-     * @param verifyingContract The verifying contract address of the domain.
-     */
-    async function testHashEIP712DomainAsync(
-        name: string,
-        version: string,
-        chainId: number,
-        verifyingContract: string,
-    ): Promise<void> {
-        const expectedHash = signTypedDataUtils.generateDomainHash({
-            name,
-            version,
-            chainId,
-            verifyingContract,
-        });
-        const actualHash = await lib
-            .externalHashEIP712DomainSeperator(name, version, new BigNumber(chainId), verifyingContract)
-            .callAsync();
-        expect(actualHash).to.be.eq(hexUtils.concat(expectedHash));
-    }
-
-    describe('_hashEIP712Domain', async () => {
-        it('should correctly hash empty input', async () => {
-            await testHashEIP712DomainAsync('', '', 0, constants.NULL_ADDRESS);
-        });
-
-        it('should correctly hash non-empty input', async () => {
-            await testHashEIP712DomainAsync('_hashEIP712Domain', '1.0', 62, lib.address);
-        });
-
-        it('should correctly hash non-empty input', async () => {
-            await testHashEIP712DomainAsync('_hashEIP712Domain', '2.0', 0, lib.address);
-        });
-    });
-
-    /**
-     * Tests a specific instance of EIP712 message hashing.
-     * @param lib The LibEIP712 contract to call.
-     * @param domainHash The hash of the EIP712 domain of this instance.
-     * @param hashStruct The hash of the struct of this instance.
-     */
-    async function testHashEIP712MessageAsync(domainHash: string, hashStruct: string): Promise<void> {
-        // Remove the hex prefix from the domain hash and the hash struct
-        const unprefixedDomainHash = domainHash.slice(2, domainHash.length);
-        const unprefixedHashStruct = hashStruct.slice(2, hashStruct.length);
-
-        // Hash the provided input to get the expected hash
-        const input = '0x1901'.concat(unprefixedDomainHash.concat(unprefixedHashStruct));
-        const expectedHash = hexUtils.hash(input);
-
-        // Get the actual hash by calling the smart contract
-        const actualHash = await lib.externalHashEIP712Message(domainHash, hashStruct).callAsync();
-
-        // Verify that the actual hash matches the expected hash
-        expect(actualHash).to.be.eq(expectedHash);
-    }
-
-    describe('_hashEIP712Message', () => {
-        it('should correctly hash empty input', async () => {
-            await testHashEIP712MessageAsync(constants.NULL_BYTES32, constants.NULL_BYTES32);
-        });
-
-        it('should correctly hash non-empty input', async () => {
-            await testHashEIP712MessageAsync(
-                '0xb10e2d527612073b26eecdfd717e6a320cf44b4afac2b0732d9fcbe2b7fa0cf6', // keccak256(abi.encode(1))
-                '0x405787fa12a823e0f2b7631cc41b3ba8828b3321ca811111fa75cd3aa3bb5ace', // keccak256(abi.encode(2))
-            );
-        });
-
-        it('should correctly hash non-empty input', async () => {
-            await testHashEIP712MessageAsync(
-                '0x405787fa12a823e0f2b7631cc41b3ba8828b3321ca811111fa75cd3aa3bb5ace', // keccak256(abi.encode(2))
-                '0xc2575a0e9e593c00f959f8c92f12db2869c3395a3b0502d05e2516446f71f85b', // keccak256(abi.encode(3))
-            );
-        });
-    });
-});

contracts/utils/test/lib_math.ts

@@ -1,421 +0,0 @@
-import {
-    blockchainTests,
-    constants,
-    describe,
-    expect,
-    testCombinatoriallyWithReferenceFunc,
-    uint256Values,
-} from '@0x/contracts-test-utils';
-import { BigNumber, LibMathRevertErrors, SafeMathRevertErrors } from '@0x/utils';
-
-import {
-    getPartialAmountCeil,
-    getPartialAmountFloor,
-    isRoundingErrorCeil,
-    isRoundingErrorFloor,
-    safeGetPartialAmountCeil,
-    safeGetPartialAmountFloor,
-} from '../src/reference_functions';
-
-import { artifacts } from './artifacts';
-import { TestLibMathContract } from './wrappers';
-
-blockchainTests('LibMath', env => {
-    const { ONE_ETHER, MAX_UINT256, MAX_UINT256_ROOT, ZERO_AMOUNT } = constants;
-    let libsContract: TestLibMathContract;
-
-    before(async () => {
-        libsContract = await TestLibMathContract.deployFrom0xArtifactAsync(
-            artifacts.TestLibMath,
-            env.provider,
-            env.txDefaults,
-            {},
-        );
-    });
-
-    // Wrap a reference function with identical arguments in a promise.
-    function createAsyncReferenceFunction<T>(ref: (...args: any[]) => T): (...args: any[]) => Promise<T> {
-        return async (...args: any[]): Promise<T> => {
-            return ref(...args);
-        };
-    }
-
-    function createContractTestFunction<T>(name: string): (...args: any[]) => Promise<T> {
-        return async (...args: any[]): Promise<T> => {
-            return (libsContract as any)[name](...args).callAsync;
-        };
-    }
-
-    describe('getPartialAmountFloor', () => {
-        describe.optional('combinatorial tests', () => {
-            testCombinatoriallyWithReferenceFunc(
-                'getPartialAmountFloor',
-                createAsyncReferenceFunction(getPartialAmountFloor),
-                createContractTestFunction('getPartialAmountFloor'),
-                [uint256Values, uint256Values, uint256Values],
-            );
-        });
-
-        describe('explicit tests', () => {
-            it('matches the reference function output', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = ONE_ETHER.times(0.01);
-                const expected = getPartialAmountFloor(numerator, denominator, target);
-                const actual = await libsContract.getPartialAmountFloor(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('rounds down when computing the partial amount', async () => {
-                const numerator = ONE_ETHER.times(0.6);
-                const denominator = ONE_ETHER.times(1.8);
-                const target = ONE_ETHER;
-                const expected = ONE_ETHER.dividedToIntegerBy(3);
-                const actual = await libsContract.getPartialAmountFloor(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('reverts if `denominator` is zero', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ZERO_AMOUNT;
-                const target = ONE_ETHER.times(0.01);
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.DivisionByZero,
-                    numerator.times(target),
-                    denominator,
-                );
-                return expect(
-                    libsContract.getPartialAmountFloor(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `numerator * target` overflows', async () => {
-                const numerator = MAX_UINT256;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = MAX_UINT256_ROOT.times(2);
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.MultiplicationOverflow,
-                    numerator,
-                    target,
-                );
-                return expect(
-                    libsContract.getPartialAmountFloor(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-        });
-    });
-
-    describe('getPartialAmountCeil', () => {
-        describe.optional('combinatorial tests', () => {
-            testCombinatoriallyWithReferenceFunc(
-                'getPartialAmountCeil',
-                createAsyncReferenceFunction(getPartialAmountCeil),
-                createContractTestFunction('getPartialAmountCeil'),
-                [uint256Values, uint256Values, uint256Values],
-            );
-        });
-
-        describe('explicit tests', () => {
-            it('matches the reference function output', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = ONE_ETHER.times(0.01);
-                const expected = getPartialAmountCeil(numerator, denominator, target);
-                const actual = await libsContract.getPartialAmountCeil(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('rounds up when computing the partial amount', async () => {
-                const numerator = ONE_ETHER.times(0.6);
-                const denominator = ONE_ETHER.times(1.8);
-                const target = ONE_ETHER;
-                const expected = ONE_ETHER.dividedToIntegerBy(3).plus(1);
-                const actual = await libsContract.getPartialAmountCeil(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('reverts if `denominator` is zero', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ZERO_AMOUNT;
-                const target = ONE_ETHER.times(0.01);
-                // This will actually manifest as a subtraction underflow.
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.SubtractionUnderflow,
-                    denominator,
-                    new BigNumber(1),
-                );
-                return expect(
-                    libsContract.getPartialAmountCeil(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `numerator * target` overflows', async () => {
-                const numerator = MAX_UINT256;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = MAX_UINT256_ROOT.times(2);
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.MultiplicationOverflow,
-                    numerator,
-                    target,
-                );
-                return expect(
-                    libsContract.getPartialAmountCeil(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-        });
-    });
-
-    describe('safeGetPartialAmountFloor', () => {
-        describe.optional('combinatorial tests', () => {
-            testCombinatoriallyWithReferenceFunc(
-                'safeGetPartialAmountFloor',
-                createAsyncReferenceFunction(safeGetPartialAmountFloor),
-                createContractTestFunction('safeGetPartialAmountFloor'),
-                [uint256Values, uint256Values, uint256Values],
-            );
-        });
-
-        describe('explicit tests', () => {
-            it('matches the reference function output', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = ONE_ETHER.times(0.01);
-                const expected = safeGetPartialAmountFloor(numerator, denominator, target);
-                const actual = await libsContract.safeGetPartialAmountFloor(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('rounds down when computing the partial amount', async () => {
-                const numerator = ONE_ETHER.times(0.6);
-                const denominator = ONE_ETHER.times(1.8);
-                const target = ONE_ETHER;
-                const expected = ONE_ETHER.dividedToIntegerBy(3);
-                const actual = await libsContract.safeGetPartialAmountFloor(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('reverts for a rounding error', async () => {
-                const numerator = new BigNumber(1e3);
-                const denominator = new BigNumber(1e4);
-                const target = new BigNumber(333);
-                const expectedError = new LibMathRevertErrors.RoundingError(numerator, denominator, target);
-                return expect(
-                    libsContract.safeGetPartialAmountFloor(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `denominator` is zero', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ZERO_AMOUNT;
-                const target = ONE_ETHER.times(0.01);
-                const expectedError = new LibMathRevertErrors.DivisionByZeroError();
-                return expect(
-                    libsContract.safeGetPartialAmountFloor(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `numerator * target` overflows', async () => {
-                const numerator = MAX_UINT256;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = MAX_UINT256_ROOT.times(2);
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.MultiplicationOverflow,
-                    numerator,
-                    target,
-                );
-                return expect(
-                    libsContract.safeGetPartialAmountFloor(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-        });
-    });
-
-    describe('safeGetPartialAmountCeil', () => {
-        describe.optional('combinatorial tests', () => {
-            testCombinatoriallyWithReferenceFunc(
-                'safeGetPartialAmountCeil',
-                createAsyncReferenceFunction(safeGetPartialAmountCeil),
-                createContractTestFunction('safeGetPartialAmountCeil'),
-                [uint256Values, uint256Values, uint256Values],
-            );
-        });
-
-        describe('explicit tests', () => {
-            it('matches the reference function output', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = ONE_ETHER.times(0.01);
-                const expected = safeGetPartialAmountCeil(numerator, denominator, target);
-                const actual = await libsContract.safeGetPartialAmountCeil(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('rounds up when computing the partial amount', async () => {
-                const numerator = ONE_ETHER.times(0.6);
-                const denominator = ONE_ETHER.times(1.8);
-                const target = ONE_ETHER;
-                const expected = ONE_ETHER.dividedToIntegerBy(3).plus(1);
-                const actual = await libsContract.safeGetPartialAmountCeil(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('reverts for a rounding error', async () => {
-                const numerator = new BigNumber(1e3);
-                const denominator = new BigNumber(1e4);
-                const target = new BigNumber(333);
-                const expectedError = new LibMathRevertErrors.RoundingError(numerator, denominator, target);
-                return expect(
-                    libsContract.safeGetPartialAmountCeil(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `denominator` is zero', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ZERO_AMOUNT;
-                const target = ONE_ETHER.times(0.01);
-                const expectedError = new LibMathRevertErrors.DivisionByZeroError();
-                return expect(
-                    libsContract.safeGetPartialAmountCeil(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `numerator * target` overflows', async () => {
-                const numerator = MAX_UINT256;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = MAX_UINT256_ROOT.times(2);
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.MultiplicationOverflow,
-                    numerator,
-                    target,
-                );
-                return expect(
-                    libsContract.safeGetPartialAmountCeil(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-        });
-    });
-
-    describe('isRoundingErrorFloor', () => {
-        describe.optional('combinatorial tests', () => {
-            testCombinatoriallyWithReferenceFunc(
-                'isRoundingErrorFloor',
-                createAsyncReferenceFunction(isRoundingErrorFloor),
-                createContractTestFunction('isRoundingErrorFloor'),
-                [uint256Values, uint256Values, uint256Values],
-            );
-        });
-
-        describe('explicit tests', () => {
-            it('returns true when `numerator * target / denominator` produces an error >= 0.1%', async () => {
-                const numerator = new BigNumber(100);
-                const denominator = new BigNumber(102);
-                const target = new BigNumber(52);
-                const actual = await libsContract.isRoundingErrorFloor(numerator, denominator, target).callAsync();
-                expect(actual).to.eq(true);
-            });
-
-            it('returns false when `numerator * target / denominator` produces an error < 0.1%', async () => {
-                const numerator = new BigNumber(100);
-                const denominator = new BigNumber(101);
-                const target = new BigNumber(92);
-                const actual = await libsContract.isRoundingErrorFloor(numerator, denominator, target).callAsync();
-                expect(actual).to.eq(false);
-            });
-
-            it('matches the reference function output', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = ONE_ETHER.times(0.01);
-                const expected = isRoundingErrorFloor(numerator, denominator, target);
-                const actual = await libsContract.isRoundingErrorFloor(numerator, denominator, target).callAsync();
-                expect(actual).to.eq(expected);
-            });
-
-            it('reverts if `denominator` is zero', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ZERO_AMOUNT;
-                const target = ONE_ETHER.times(0.01);
-                const expectedError = new LibMathRevertErrors.DivisionByZeroError();
-                return expect(
-                    libsContract.isRoundingErrorFloor(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `numerator * target` overflows', async () => {
-                const numerator = MAX_UINT256;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = MAX_UINT256_ROOT.times(2);
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.MultiplicationOverflow,
-                    numerator,
-                    target,
-                );
-                return expect(
-                    libsContract.isRoundingErrorFloor(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-        });
-    });
-
-    describe('isRoundingErrorCeil', () => {
-        describe.optional('combinatorial tests', () => {
-            testCombinatoriallyWithReferenceFunc(
-                'isRoundingErrorCeil',
-                createAsyncReferenceFunction(isRoundingErrorCeil),
-                createContractTestFunction('isRoundingErrorCeil'),
-                [uint256Values, uint256Values, uint256Values],
-            );
-        });
-
-        describe('explicit tests', () => {
-            it('returns true when `numerator * target / (denominator - 1)` produces an error >= 0.1%', async () => {
-                const numerator = new BigNumber(100);
-                const denominator = new BigNumber(101);
-                const target = new BigNumber(92);
-                const actual = await libsContract.isRoundingErrorCeil(numerator, denominator, target).callAsync();
-                expect(actual).to.eq(true);
-            });
-
-            it('returns false when `numerator * target / (denominator - 1)` produces an error < 0.1%', async () => {
-                const numerator = new BigNumber(100);
-                const denominator = new BigNumber(102);
-                const target = new BigNumber(52);
-                const actual = await libsContract.isRoundingErrorCeil(numerator, denominator, target).callAsync();
-                expect(actual).to.eq(false);
-            });
-
-            it('matches the reference function output', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = ONE_ETHER.times(0.01);
-                const expected = isRoundingErrorCeil(numerator, denominator, target);
-                const actual = await libsContract.isRoundingErrorCeil(numerator, denominator, target).callAsync();
-                expect(actual).to.eq(expected);
-            });
-
-            it('reverts if `denominator` is zero', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ZERO_AMOUNT;
-                const target = ONE_ETHER.times(0.01);
-                const expectedError = new LibMathRevertErrors.DivisionByZeroError();
-                return expect(
-                    libsContract.isRoundingErrorCeil(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `numerator * target` overflows', async () => {
-                const numerator = MAX_UINT256;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = MAX_UINT256_ROOT.times(2);
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.MultiplicationOverflow,
-                    numerator,
-                    target,
-                );
-                return expect(
-                    libsContract.isRoundingErrorCeil(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-        });
-    });
-});

contracts/utils/test/log_decoding.ts

@@ -1,98 +0,0 @@
-import { chaiSetup, provider, txDefaults, web3Wrapper } from '@0x/contracts-test-utils';
-import { BlockchainLifecycle } from '@0x/dev-utils';
-import { BigNumber } from '@0x/utils';
-import * as chai from 'chai';
-import { DecodedLogArgs, LogWithDecodedArgs } from 'ethereum-types';
-
-import { artifacts } from './artifacts';
-import { TestLogDecodingContract } from './wrappers';
-
-chaiSetup.configure();
-const expect = chai.expect;
-
-const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-
-describe('TestLogDecoding', () => {
-    let testLogDecodingWithDependencies: TestLogDecodingContract;
-    let testLogDecodingDeployedWithoutDependencies: TestLogDecodingContract;
-    const expectedEvent = {
-        foo: new BigNumber(256),
-        bar: '0x1234',
-        car: '4321',
-    };
-    const expectedDownstreamEvent = {
-        lorem: new BigNumber(256),
-        ipsum: '4321',
-    };
-    const emptyDependencyList = {};
-
-    before(async () => {
-        testLogDecodingDeployedWithoutDependencies = await TestLogDecodingContract.deployFrom0xArtifactAsync(
-            artifacts.TestLogDecoding,
-            provider,
-            txDefaults,
-            emptyDependencyList,
-        );
-        testLogDecodingWithDependencies = await TestLogDecodingContract.deployFrom0xArtifactAsync(
-            artifacts.TestLogDecoding,
-            provider,
-            txDefaults,
-            artifacts,
-        );
-    });
-    beforeEach(async () => {
-        await blockchainLifecycle.startAsync();
-    });
-    afterEach(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-
-    describe('Decoding Log Arguments', () => {
-        it('should decode locally emitted event args when no dependencies are passed into wrapper', async () => {
-            const txReceipt = await testLogDecodingDeployedWithoutDependencies
-                .emitEvent()
-                .awaitTransactionSuccessAsync();
-            expect(txReceipt.logs.length).to.be.equal(1);
-            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.deep.equal(expectedEvent);
-        });
-        it('should not decode event args when no dependencies are passed into wrapper', async () => {
-            const txReceipt = await testLogDecodingDeployedWithoutDependencies
-                .emitEventDownstream()
-                .awaitTransactionSuccessAsync();
-            expect(txReceipt.logs.length).to.be.equal(1);
-            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.undefined();
-        });
-        it('should decode args for local but not downstream event when no dependencies are passed into wrapper', async () => {
-            const txReceipt = await testLogDecodingDeployedWithoutDependencies
-                .emitEventsLocalAndDownstream()
-                .awaitTransactionSuccessAsync();
-            expect(txReceipt.logs.length).to.be.equal(2);
-            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.deep.equal(expectedEvent);
-            expect((txReceipt.logs[1] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.undefined();
-        });
-        it('should decode locally emitted event args when dependencies are passed into wrapper', async () => {
-            const txReceipt = await testLogDecodingWithDependencies.emitEvent().awaitTransactionSuccessAsync();
-            expect(txReceipt.logs.length).to.be.equal(1);
-            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.deep.equal(expectedEvent);
-        });
-        it('should decode downstream event args when dependencies are passed into wrapper', async () => {
-            const txReceipt = await testLogDecodingWithDependencies
-                .emitEventDownstream()
-                .awaitTransactionSuccessAsync();
-            expect(txReceipt.logs.length).to.be.equal(1);
-            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.deep.equal(
-                expectedDownstreamEvent,
-            );
-        });
-        it('should decode args for both local and downstream events when dependencies are passed into wrapper', async () => {
-            const txReceipt = await testLogDecodingWithDependencies
-                .emitEventsLocalAndDownstream()
-                .awaitTransactionSuccessAsync();
-            expect(txReceipt.logs.length).to.be.equal(2);
-            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.deep.equal(expectedEvent);
-            expect((txReceipt.logs[1] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.deep.equal(
-                expectedDownstreamEvent,
-            );
-        });
-    });
-});

contracts/utils/test/refundable.ts

@@ -1,141 +0,0 @@
-import { blockchainTests, constants } from '@0x/contracts-test-utils';
-import { BigNumber } from '@0x/utils';
-import * as _ from 'lodash';
-
-import { artifacts } from './artifacts';
-import { TestRefundableContract, TestRefundableReceiverContract } from './wrappers';
-
-blockchainTests('Refundable', env => {
-    let refundable: TestRefundableContract;
-    let receiver: TestRefundableReceiverContract;
-
-    const ONE_HUNDRED = new BigNumber(100);
-    const ONE_THOUSAND = new BigNumber(1000);
-
-    before(async () => {
-        // Create the refundable contract.
-        refundable = await TestRefundableContract.deployFrom0xArtifactAsync(
-            artifacts.TestRefundable,
-            env.provider,
-            env.txDefaults,
-            {},
-        );
-
-        // Create the receiver contract.
-        receiver = await TestRefundableReceiverContract.deployFrom0xArtifactAsync(
-            artifacts.TestRefundableReceiver,
-            env.provider,
-            env.txDefaults,
-            {},
-        );
-    });
-
-    // The contents of these typescript tests is not adequate to understand the assertions that are made during
-    // these calls. For a more accurate picture, checkout out "./contracts/test/TestRefundableReceiver.sol". Specifically,
-    // the function `testRefundNonzeroBalance()` is used in this test suite.
-    blockchainTests.resets('refundNonzeroBalance', () => {
-        it('should not send a refund when no value is sent', async () => {
-            // Send 100 wei to the refundable contract that should be refunded.
-            await receiver.testRefundNonZeroBalance(refundable.address).awaitTransactionSuccessAsync({
-                value: constants.ZERO_AMOUNT,
-            });
-        });
-
-        it('should send a full refund when nonzero value is sent', async () => {
-            // Send 100 wei to the refundable contract that should be refunded.
-            await receiver.testRefundNonZeroBalance(refundable.address).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-    });
-
-    // The contents of these typescript tests is not adequate to understand the assertions that are made during
-    // these calls. For a more accurate picture, checkout out "./contracts/test/TestRefundableReceiver.sol".
-    blockchainTests.resets('refundFinalBalance', () => {
-        it('should fully refund the sender when `shouldNotRefund` is false', async () => {
-            // Send 100 wei to the refundable contract that should be refunded to the receiver contract.
-            await receiver.testRefundFinalBalance(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-
-        // This test may not be necessary, but it is included here as a sanity check.
-        it('should fully refund the sender when `shouldNotRefund` is false for two calls in a row', async () => {
-            // Send 100 wei to the refundable contract that should be refunded to the receiver contract.
-            await receiver.testRefundFinalBalance(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-
-            // Send 1000 wei to the refundable contract that should be refunded to the receiver contract.
-            await receiver.testRefundFinalBalance(refundable.address, false).awaitTransactionSuccessAsync({
-                value: new BigNumber(1000),
-            });
-        });
-
-        it('should not refund the sender if `shouldNotRefund` is true', async () => {
-            /// Send 100 wei to the refundable contract that should not be refunded.
-            await receiver.testRefundFinalBalance(refundable.address, true).awaitTransactionSuccessAsync({
-                value: new BigNumber(1000),
-            });
-        });
-    });
-
-    // The contents of these typescript tests is not adequate to understand the assertions that are made during
-    // these calls. For a more accurate picture, checkout out "./contracts/test/TestRefundableReceiver.sol".
-    blockchainTests.resets('disableRefundUntilEnd', () => {
-        it('should fully refund the sender when `shouldNotRefund` is false', async () => {
-            // Send 100 wei to the refundable contract that should be refunded to the receiver contract.
-            await receiver.testDisableRefundUntilEnd(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-
-        // This test may not be necessary, but it is included here as a sanity check.
-        it('should fully refund the sender when `shouldNotRefund` is false for two calls in a row', async () => {
-            // Send 100 wei to the refundable contract that should be refunded to the receiver contract.
-            await receiver.testDisableRefundUntilEnd(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-
-            // Send 1000 wei to the refundable contract that should be refunded to the receiver contract.
-            await receiver.testDisableRefundUntilEnd(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_THOUSAND,
-            });
-        });
-
-        it('should not refund the sender if `shouldNotRefund` is true', async () => {
-            /// Send 100 wei to the refundable contract that should not be refunded.
-            await receiver.testDisableRefundUntilEnd(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-
-        it('should disable the `disableRefundUntilEnd` modifier and refund when `shouldNotRefund` is false', async () => {
-            /// Send 100 wei to the refundable contract that should be refunded.
-            await receiver.testNestedDisableRefundUntilEnd(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-
-        it('should disable the `refundFinalBalance` modifier and send no refund when `shouldNotRefund` is true', async () => {
-            /// Send 100 wei to the refundable contract that should not be refunded.
-            await receiver.testNestedDisableRefundUntilEnd(refundable.address, true).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-
-        it('should disable the `refundFinalBalance` modifier and refund when `shouldNotRefund` is false', async () => {
-            /// Send 100 wei to the refundable contract that should be refunded.
-            await receiver.testMixedRefunds(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-
-        it('should disable the `refundFinalBalance` modifier and send no refund when `shouldNotRefund` is true', async () => {
-            /// Send 100 wei to the refundable contract that should not be refunded.
-            await receiver.testMixedRefunds(refundable.address, true).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-    });
-});

contracts/utils/test/wrappers.ts

@@ -3,56 +3,46 @@
  * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
  * -----------------------------------------------------------------------------
  */
-export * from '../test/generated-wrappers/authorizable';
 export * from '../test/generated-wrappers/authorizable_v06';
-export * from '../test/generated-wrappers/d18';
-export * from '../test/generated-wrappers/deployment_constants';
-export * from '../test/generated-wrappers/i_authorizable';
+export * from '../test/generated-wrappers/authorizable_v08';
 export * from '../test/generated-wrappers/i_authorizable_v06';
+export * from '../test/generated-wrappers/i_authorizable_v08';
 export * from '../test/generated-wrappers/i_ownable';
 export * from '../test/generated-wrappers/i_ownable_v06';
-export * from '../test/generated-wrappers/lib_address';
-export * from '../test/generated-wrappers/lib_address_array';
-export * from '../test/generated-wrappers/lib_address_array_rich_errors';
-export * from '../test/generated-wrappers/lib_authorizable_rich_errors';
+export * from '../test/generated-wrappers/i_ownable_v08';
 export * from '../test/generated-wrappers/lib_authorizable_rich_errors_v06';
+export * from '../test/generated-wrappers/lib_authorizable_rich_errors_v08';
 export * from '../test/generated-wrappers/lib_bytes';
 export * from '../test/generated-wrappers/lib_bytes_rich_errors';
 export * from '../test/generated-wrappers/lib_bytes_rich_errors_v06';
+export * from '../test/generated-wrappers/lib_bytes_rich_errors_v08';
 export * from '../test/generated-wrappers/lib_bytes_v06';
-export * from '../test/generated-wrappers/lib_e_i_p1271';
-export * from '../test/generated-wrappers/lib_e_i_p712';
-export * from '../test/generated-wrappers/lib_fractions';
-export * from '../test/generated-wrappers/lib_math';
-export * from '../test/generated-wrappers/lib_math_rich_errors';
+export * from '../test/generated-wrappers/lib_bytes_v08';
 export * from '../test/generated-wrappers/lib_math_rich_errors_v06';
+export * from '../test/generated-wrappers/lib_math_rich_errors_v08';
 export * from '../test/generated-wrappers/lib_math_v06';
+export * from '../test/generated-wrappers/lib_math_v08';
 export * from '../test/generated-wrappers/lib_ownable_rich_errors';
 export * from '../test/generated-wrappers/lib_ownable_rich_errors_v06';
+export * from '../test/generated-wrappers/lib_ownable_rich_errors_v08';
 export * from '../test/generated-wrappers/lib_reentrancy_guard_rich_errors';
 export * from '../test/generated-wrappers/lib_reentrancy_guard_rich_errors_v06';
+export * from '../test/generated-wrappers/lib_reentrancy_guard_rich_errors_v08';
 export * from '../test/generated-wrappers/lib_rich_errors';
 export * from '../test/generated-wrappers/lib_rich_errors_v06';
+export * from '../test/generated-wrappers/lib_rich_errors_v08';
 export * from '../test/generated-wrappers/lib_safe_math';
 export * from '../test/generated-wrappers/lib_safe_math_rich_errors';
 export * from '../test/generated-wrappers/lib_safe_math_rich_errors_v06';
+export * from '../test/generated-wrappers/lib_safe_math_rich_errors_v08';
 export * from '../test/generated-wrappers/lib_safe_math_v06';
 export * from '../test/generated-wrappers/ownable';
 export * from '../test/generated-wrappers/ownable_v06';
+export * from '../test/generated-wrappers/ownable_v08';
 export * from '../test/generated-wrappers/reentrancy_guard';
-export * from '../test/generated-wrappers/reentrancy_guard_v06';
-export * from '../test/generated-wrappers/refundable';
-export * from '../test/generated-wrappers/test_authorizable';
-export * from '../test/generated-wrappers/test_lib_address';
-export * from '../test/generated-wrappers/test_lib_address_array';
+export * from '../test/generated-wrappers/reentrancy_guard_v08';
 export * from '../test/generated-wrappers/test_lib_bytes';
-export * from '../test/generated-wrappers/test_lib_e_i_p712';
-export * from '../test/generated-wrappers/test_lib_math';
 export * from '../test/generated-wrappers/test_lib_rich_errors';
 export * from '../test/generated-wrappers/test_lib_safe_math';
-export * from '../test/generated-wrappers/test_log_decoding';
-export * from '../test/generated-wrappers/test_log_decoding_downstream';
 export * from '../test/generated-wrappers/test_ownable';
 export * from '../test/generated-wrappers/test_reentrancy_guard';
-export * from '../test/generated-wrappers/test_refundable';
-export * from '../test/generated-wrappers/test_refundable_receiver';

contracts/utils/truffle-config.js

@@ -1,96 +0,0 @@
-/**
- * Use this file to configure your truffle project. It's seeded with some
- * common settings for different networks and features like migrations,
- * compilation and testing. Uncomment the ones you need or modify
- * them to suit your project as necessary.
- *
- * More information about configuration can be found at:
- *
- * truffleframework.com/docs/advanced/configuration
- *
- * To deploy via Infura you'll need a wallet provider (like truffle-hdwallet-provider)
- * to sign your transactions before they're sent to a remote public node. Infura accounts
- * are available for free at: infura.io/register.
- *
- * You'll also need a mnemonic - the twelve word phrase the wallet uses to generate
- * public/private key pairs. If you're publishing your code to GitHub make sure you load this
- * phrase from a file you've .gitignored so it doesn't accidentally become public.
- *
- */
-
-// const HDWalletProvider = require('truffle-hdwallet-provider');
-// const infuraKey = "fj4jll3k.....";
-//
-// const fs = require('fs');
-// const mnemonic = fs.readFileSync(".secret").toString().trim();
-
-module.exports = {
-    /**
-     * Networks define how you connect to your ethereum client and let you set the
-     * defaults web3 uses to send transactions. If you don't specify one truffle
-     * will spin up a development blockchain for you on port 9545 when you
-     * run `develop` or `test`. You can ask a truffle command to use a specific
-     * network from the command line, e.g
-     *
-     * $ truffle test --network <network-name>
-     */
-
-    networks: {
-        // Useful for testing. The `development` name is special - truffle uses it by default
-        // if it's defined here and no other network is specified at the command line.
-        // You should run a client (like ganache-cli, geth or parity) in a separate terminal
-        // tab if you use this network and you must also set the `host`, `port` and `network_id`
-        // options below to some value.
-        //
-        // development: {
-        //  host: "127.0.0.1",     // Localhost (default: none)
-        //  port: 8545,            // Standard Ethereum port (default: none)
-        //  network_id: "*",       // Any network (default: none)
-        // },
-        // Another network with more advanced options...
-        // advanced: {
-        // port: 8777,             // Custom port
-        // network_id: 1342,       // Custom network
-        // gas: 8500000,           // Gas sent with each transaction (default: ~6700000)
-        // gasPrice: 20000000000,  // 20 gwei (in wei) (default: 100 gwei)
-        // from: <address>,        // Account to send txs from (default: accounts[0])
-        // websockets: true        // Enable EventEmitter interface for web3 (default: false)
-        // },
-        // Useful for deploying to a public network.
-        // NB: It's important to wrap the provider as a function.
-        // ropsten: {
-        // provider: () => new HDWalletProvider(mnemonic, `https://ropsten.infura.io/v3/YOUR-PROJECT-ID`),
-        // network_id: 3,       // Ropsten's id
-        // gas: 5500000,        // Ropsten has a lower block limit than mainnet
-        // confirmations: 2,    // # of confs to wait between deployments. (default: 0)
-        // timeoutBlocks: 200,  // # of blocks before a deployment times out  (minimum/default: 50)
-        // skipDryRun: true     // Skip dry run before migrations? (default: false for public nets )
-        // },
-        // Useful for private networks
-        // private: {
-        // provider: () => new HDWalletProvider(mnemonic, `https://network.io`),
-        // network_id: 2111,   // This network is yours, in the cloud.
-        // production: true    // Treats this network as if it was a public net. (default: false)
-        // }
-    },
-
-    // Set default mocha options here, use special reporters etc.
-    mocha: {
-        // timeout: 100000
-    },
-
-    // Configure your compilers
-    compilers: {
-        solc: {
-            version: '0.5.9',
-            settings: {
-                evmVersion: 'istanbul',
-                optimizer: {
-                    enabled: true,
-                    runs: 1000000,
-                    details: { yul: true, deduplicate: true, cse: true, constantOptimizer: true },
-                },
-            },
-        },
-    },
-};

contracts/utils/tsconfig.json

@@ -3,20 +3,9 @@
     "compilerOptions": { "outDir": "lib", "rootDir": ".", "resolveJsonModule": true },
     "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
     "files": [
-        "generated-artifacts/Authorizable.json",
-        "generated-artifacts/IAuthorizable.json",
         "generated-artifacts/IOwnable.json",
-        "generated-artifacts/LibAddress.json",
-        "generated-artifacts/LibAddressArray.json",
-        "generated-artifacts/LibAddressArrayRichErrors.json",
-        "generated-artifacts/LibAuthorizableRichErrors.json",
         "generated-artifacts/LibBytes.json",
         "generated-artifacts/LibBytesRichErrors.json",
-        "generated-artifacts/LibEIP1271.json",
-        "generated-artifacts/LibEIP712.json",
-        "generated-artifacts/LibFractions.json",
-        "generated-artifacts/LibMath.json",
-        "generated-artifacts/LibMathRichErrors.json",
         "generated-artifacts/LibOwnableRichErrors.json",
         "generated-artifacts/LibReentrancyGuardRichErrors.json",
         "generated-artifacts/LibRichErrors.json",
@@ -24,60 +13,49 @@
         "generated-artifacts/LibSafeMathRichErrors.json",
         "generated-artifacts/Ownable.json",
         "generated-artifacts/ReentrancyGuard.json",
-        "generated-artifacts/Refundable.json",
-        "test/generated-artifacts/Authorizable.json",
         "test/generated-artifacts/AuthorizableV06.json",
-        "test/generated-artifacts/D18.json",
-        "test/generated-artifacts/DeploymentConstants.json",
-        "test/generated-artifacts/IAuthorizable.json",
+        "test/generated-artifacts/AuthorizableV08.json",
         "test/generated-artifacts/IAuthorizableV06.json",
+        "test/generated-artifacts/IAuthorizableV08.json",
         "test/generated-artifacts/IOwnable.json",
         "test/generated-artifacts/IOwnableV06.json",
-        "test/generated-artifacts/LibAddress.json",
-        "test/generated-artifacts/LibAddressArray.json",
-        "test/generated-artifacts/LibAddressArrayRichErrors.json",
-        "test/generated-artifacts/LibAuthorizableRichErrors.json",
+        "test/generated-artifacts/IOwnableV08.json",
         "test/generated-artifacts/LibAuthorizableRichErrorsV06.json",
+        "test/generated-artifacts/LibAuthorizableRichErrorsV08.json",
         "test/generated-artifacts/LibBytes.json",
         "test/generated-artifacts/LibBytesRichErrors.json",
         "test/generated-artifacts/LibBytesRichErrorsV06.json",
+        "test/generated-artifacts/LibBytesRichErrorsV08.json",
         "test/generated-artifacts/LibBytesV06.json",
-        "test/generated-artifacts/LibEIP1271.json",
-        "test/generated-artifacts/LibEIP712.json",
-        "test/generated-artifacts/LibFractions.json",
-        "test/generated-artifacts/LibMath.json",
-        "test/generated-artifacts/LibMathRichErrors.json",
+        "test/generated-artifacts/LibBytesV08.json",
         "test/generated-artifacts/LibMathRichErrorsV06.json",
+        "test/generated-artifacts/LibMathRichErrorsV08.json",
         "test/generated-artifacts/LibMathV06.json",
+        "test/generated-artifacts/LibMathV08.json",
         "test/generated-artifacts/LibOwnableRichErrors.json",
         "test/generated-artifacts/LibOwnableRichErrorsV06.json",
+        "test/generated-artifacts/LibOwnableRichErrorsV08.json",
         "test/generated-artifacts/LibReentrancyGuardRichErrors.json",
         "test/generated-artifacts/LibReentrancyGuardRichErrorsV06.json",
+        "test/generated-artifacts/LibReentrancyGuardRichErrorsV08.json",
         "test/generated-artifacts/LibRichErrors.json",
         "test/generated-artifacts/LibRichErrorsV06.json",
+        "test/generated-artifacts/LibRichErrorsV08.json",
         "test/generated-artifacts/LibSafeMath.json",
         "test/generated-artifacts/LibSafeMathRichErrors.json",
         "test/generated-artifacts/LibSafeMathRichErrorsV06.json",
+        "test/generated-artifacts/LibSafeMathRichErrorsV08.json",
         "test/generated-artifacts/LibSafeMathV06.json",
         "test/generated-artifacts/Ownable.json",
         "test/generated-artifacts/OwnableV06.json",
+        "test/generated-artifacts/OwnableV08.json",
         "test/generated-artifacts/ReentrancyGuard.json",
-        "test/generated-artifacts/ReentrancyGuardV06.json",
-        "test/generated-artifacts/Refundable.json",
-        "test/generated-artifacts/TestAuthorizable.json",
-        "test/generated-artifacts/TestLibAddress.json",
-        "test/generated-artifacts/TestLibAddressArray.json",
+        "test/generated-artifacts/ReentrancyGuardV08.json",
         "test/generated-artifacts/TestLibBytes.json",
-        "test/generated-artifacts/TestLibEIP712.json",
-        "test/generated-artifacts/TestLibMath.json",
         "test/generated-artifacts/TestLibRichErrors.json",
         "test/generated-artifacts/TestLibSafeMath.json",
-        "test/generated-artifacts/TestLogDecoding.json",
-        "test/generated-artifacts/TestLogDecodingDownstream.json",
         "test/generated-artifacts/TestOwnable.json",
-        "test/generated-artifacts/TestReentrancyGuard.json",
-        "test/generated-artifacts/TestRefundable.json",
-        "test/generated-artifacts/TestRefundableReceiver.json"
+        "test/generated-artifacts/TestReentrancyGuard.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]
 }

contracts/zero-ex/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1675210931,
+        "version": "0.38.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1675105183,
+        "version": "0.38.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1674517560,
+        "version": "0.38.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1670879498,
+        "version": "0.38.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1669235113,
         "version": "0.38.2",

contracts/zero-ex/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v0.38.6 - _February 1, 2023_
+
+    * Dependencies updated
+
+## v0.38.5 - _January 30, 2023_
+
+    * Dependencies updated
+
+## v0.38.4 - _January 23, 2023_
+
+    * Dependencies updated
+
+## v0.38.3 - _December 12, 2022_
+
+    * Dependencies updated
+
 ## v0.38.2 - _November 23, 2022_
 
     * Dependencies updated

contracts/zero-ex/README.md

@@ -20,7 +20,7 @@ We strongly recommend that the community help us make improvements and determine
 
 For proposals regarding the 0x protocol's smart contract architecture, message format, or additional functionality, go to the [0x Improvement Proposals (ZEIPs)](https://github.com/0xProject/ZEIPs) repository and follow the contribution guidelines provided therein.
 
-Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
+Please read our [contribution guidelines](../../.github/CONTRIBUTING.md) before getting started.
 
 ### Install Dependencies
 
@@ -67,3 +67,22 @@ yarn lint
 ```bash
 yarn test
 ```
+
+### Run Integration Tests
+you will need to create a .env that the root of `/contracts/zero-ex` containing rpc's for all 7 chains the tests will be run on
+
+```sh
+ARBITRUM_RPC_URL=https://arb-mainnet........
+AVALANCHE_RPC_URL=https://avalanche-mainnet......
+BSC_RPC_URL=https://bsc-mainnet......
+FANTOM_RPC_URL=https://fantom-mainnet......
+MAINNET_RPC_URL=https://eth-mainnet......
+OPTIMISM_RPC_URL=https://opt-mainnet......
+POLYGON_RPC_URL=https://polygon-mainnet......
+```
+
+```bash
+git submodule update --init --recursive
+foundryup
+yarn test:integration
+```

contracts/zero-ex/compiler.json

@@ -110,6 +110,7 @@
         "./contracts/src/transformers/Transformer.sol",
         "./contracts/src/transformers/WethTransformer.sol",
         "./contracts/src/transformers/bridges/AbstractBridgeAdapter.sol",
+        "./contracts/src/transformers/bridges/ArbitrumBridgeAdapter.sol",
         "./contracts/src/transformers/bridges/AvalancheBridgeAdapter.sol",
         "./contracts/src/transformers/bridges/BSCBridgeAdapter.sol",
         "./contracts/src/transformers/bridges/BridgeProtocols.sol",
@@ -121,7 +122,6 @@
         "./contracts/src/transformers/bridges/PolygonBridgeAdapter.sol",
         "./contracts/src/transformers/bridges/mixins/MixinAaveV2.sol",
         "./contracts/src/transformers/bridges/mixins/MixinBalancer.sol",
-        "./contracts/src/transformers/bridges/mixins/MixinBalancerV2.sol",
         "./contracts/src/transformers/bridges/mixins/MixinBalancerV2Batch.sol",
         "./contracts/src/transformers/bridges/mixins/MixinBancor.sol",
         "./contracts/src/transformers/bridges/mixins/MixinBancorV3.sol",
@@ -158,8 +158,6 @@
         "./contracts/src/vendor/v3/IERC20Bridge.sol",
         "./contracts/src/vendor/v3/IStaking.sol",
         "./contracts/test/ITestSimpleFunctionRegistryFeature.sol",
-        "./contracts/test/TestBridge.sol",
-        "./contracts/test/TestCallTarget.sol",
         "./contracts/test/TestDelegateCaller.sol",
         "./contracts/test/TestFeeCollectorController.sol",
         "./contracts/test/TestFeeRecipient.sol",
@@ -193,7 +191,6 @@
         "./contracts/test/TestTransformerHost.sol",
         "./contracts/test/TestUniswapV3Feature.sol",
         "./contracts/test/TestWethTransformerHost.sol",
-        "./contracts/test/TestZeroExFeature.sol",
         "./contracts/test/integration/TestCurve.sol",
         "./contracts/test/integration/TestLiquidityProvider.sol",
         "./contracts/test/integration/TestMooniswap.sol",

contracts/zero-ex/contracts/src/IZeroEx.sol

@@ -1,20 +1,15 @@
 // SPDX-License-Identifier: Apache-2.0
 /*
-
-  Copyright 2020 ZeroEx Intl.
-
+  Copyright 2023 ZeroEx Intl.
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at
-
     http://www.apache.org/licenses/LICENSE-2.0
-
   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
-
 */
 
 pragma solidity ^0.6.5;