Add doc generation to several more packages and fix up their index.ts files so all public interface types are exported

contracts/exchange-forwarder/package.json

@@ -32,7 +32,9 @@
         "contracts:gen": "contracts-gen generate",
         "contracts:copy": "contracts-gen copy",
         "lint-contracts": "solhint -c ../.solhint.json contracts/**/**/**/**/*.sol",
-        "compile:truffle": "truffle compile"
+        "compile:truffle": "truffle compile",
+        "docs:md": "ts-doc-gen --sourceDir='$PROJECT_FILES' --output=$MD_FILE_DIR --fileExtension=mdx --tsconfig=./typedoc-tsconfig.json",
+        "docs:json": "typedoc --excludePrivate --excludeExternals --excludeProtected --ignoreCompilerErrors --target ES5 --tsconfig typedoc-tsconfig.json --json $JSON_FILE_PATH $PROJECT_FILES"
     },
     "config": {
         "publicInterfaceContracts": "Forwarder",
@@ -66,6 +68,8 @@
         "@0x/types": "^2.5.0-beta.2",
         "@0x/utils": "^4.6.0-beta.2",
         "@0x/web3-wrapper": "^6.1.0-beta.2",
+        "@0x/ts-doc-gen": "^0.0.22",
+        "typedoc": "^0.15.0",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "*",

contracts/exchange-forwarder/src/index.ts

@@ -1,3 +1,31 @@
-export * from './artifacts';
-export * from './wrappers';
+export { artifacts } from './artifacts';
+export { ForwarderContract } from './wrappers';
 export import ForwarderRevertErrors = require('./revert_errors');
+export {
+    ContractArtifact,
+    ContractChains,
+    CompilerOpts,
+    StandardContractOutput,
+    CompilerSettings,
+    ContractChainData,
+    ContractAbi,
+    DevdocOutput,
+    EvmOutput,
+    CompilerSettingsMetadata,
+    OptimizerSettings,
+    OutputField,
+    ParamDescription,
+    EvmBytecodeOutput,
+    AbiDefinition,
+    FunctionAbi,
+    EventAbi,
+    RevertErrorAbi,
+    EventParameter,
+    DataItem,
+    MethodAbi,
+    ConstructorAbi,
+    FallbackAbi,
+    ConstructorStateMutability,
+    TupleDataItem,
+    StateMutability,
+} from 'ethereum-types';

contracts/exchange-forwarder/typedoc-tsconfig.json

@@ -0,0 +1,7 @@
+{
+    "extends": "../../typedoc-tsconfig",
+    "compilerOptions": {
+        "outDir": "lib"
+    },
+    "include": ["./src/**/*", "./test/**/*"]
+}