Dedupe AssetProxyId types

packages/contract-wrappers/src/contract_wrappers/erc20_proxy_wrapper.ts

@@ -1,9 +1,9 @@
+import { AssetProxyId } from '@0xproject/types';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import { ContractAbi } from 'ethereum-types';
 import * as _ from 'lodash';
 
 import { artifacts } from '../artifacts';
-import { AssetProxyId } from '../types';
 import { assert } from '../utils/assert';
 
 import { ContractWrapper } from './contract_wrapper';

packages/contract-wrappers/src/contract_wrappers/erc721_proxy_wrapper.ts

@@ -1,9 +1,9 @@
+import { AssetProxyId } from '@0xproject/types';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import { ContractAbi } from 'ethereum-types';
 import * as _ from 'lodash';
 
 import { artifacts } from '../artifacts';
-import { AssetProxyId } from '../types';
 import { assert } from '../utils/assert';
 
 import { ContractWrapper } from './contract_wrapper';

packages/contract-wrappers/src/contract_wrappers/exchange_wrapper.ts

@@ -1,5 +1,5 @@
 import { schemas } from '@0xproject/json-schemas';
-import { ExchangeContractErrs, Order, SignedOrder } from '@0xproject/types';
+import { AssetProxyId, Order, SignedOrder } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import { ContractAbi, LogWithDecodedArgs } from 'ethereum-types';
@@ -10,7 +10,6 @@ import { methodOptsSchema } from '../schemas/method_opts_schema';
 import { orderTxOptsSchema } from '../schemas/order_tx_opts_schema';
 import { txOptsSchema } from '../schemas/tx_opts_schema';
 import {
-    AssetProxyId,
     BlockRange,
     EventCallback,
     ExchangeWrapperError,

packages/contract-wrappers/src/types.ts

@@ -33,11 +33,6 @@ export enum ContractWrappersError {
     ERC721NoApproval = 'ERC_721_NO_APPROVAL',
 }
 
-export declare enum AssetProxyId {
-    ERC20 = '0xf47261b0',
-    ERC721 = '0x08e937fa',
-}
-
 export enum InternalContractWrappersError {
     NoAbiDecoder = 'NO_ABI_DECODER',
 }

packages/types/src/index.ts

@@ -158,7 +158,6 @@ export interface ECSignature {
 }
 
 export enum AssetProxyId {
-    INVALID = '0x00000000',
     ERC20 = '0xf47261b0',
     ERC721 = '0x08e937fa',
 }