Move fetchers to contract-wrappers

packages/contract-wrappers/CHANGELOG.json

@@ -4,6 +4,10 @@
         "changes": [
             {
                 "note": "Add `OrderValidatorWrapper`"
+            },
+            {
+                "note":
+                    "Export `AssetBalanceAndProxyAllowanceFetcher` and `OrderFilledCancelledFetcher` implementations"
             }
         ]
     },

packages/contract-wrappers/src/fetchers/asset_balance_and_proxy_allowance_fetcher.ts

@@ -1,8 +1,11 @@
 // tslint:disable:no-unnecessary-type-assertion
-import { BlockParamLiteral, ERC20TokenWrapper, ERC721TokenWrapper } from '@0xproject/contract-wrappers';
 import { AbstractBalanceAndProxyAllowanceFetcher, assetDataUtils } from '@0xproject/order-utils';
 import { AssetProxyId, ERC20AssetData, ERC721AssetData } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
+import { BlockParamLiteral } from 'ethereum-types';
+
+import { ERC20TokenWrapper } from '../contract_wrappers/erc20_token_wrapper';
+import { ERC721TokenWrapper } from '../contract_wrappers/erc721_token_wrapper';
 
 export class AssetBalanceAndProxyAllowanceFetcher implements AbstractBalanceAndProxyAllowanceFetcher {
     private readonly _erc20Token: ERC20TokenWrapper;

packages/contract-wrappers/src/fetchers/order_filled_cancelled_fetcher.ts

@@ -1,7 +1,10 @@
 // tslint:disable:no-unnecessary-type-assertion
-import { BlockParamLiteral, ExchangeWrapper } from '@0xproject/contract-wrappers';
 import { AbstractOrderFilledCancelledFetcher } from '@0xproject/order-utils';
 import { BigNumber } from '@0xproject/utils';
+import { BlockParamLiteral } from 'ethereum-types';
+
+import { ERC20TokenWrapper } from '../contract_wrappers/erc20_token_wrapper';
+import { ExchangeWrapper } from '../contract_wrappers/exchange_wrapper';
 
 export class OrderFilledCancelledFetcher implements AbstractOrderFilledCancelledFetcher {
     private readonly _exchange: ExchangeWrapper;