factored out interfaces in types.ts

packages/asset-swapper/src/utils/market_operation_utils/sampler.ts

@@ -2,14 +2,7 @@ import { IERC20BridgeSamplerContract } from '@0x/contract-wrappers';
 import { BigNumber } from '@0x/utils';
 
 import { samplerOperations } from './sampler_operations';
-
-/**
- * A composable operation the be run in `DexOrderSampler.executeAsync()`.
- */
-export interface BatchedOperation<TResult> {
-    encodeCall(contract: IERC20BridgeSamplerContract): string;
-    handleCallResultsAsync(contract: IERC20BridgeSamplerContract, callResults: string): Promise<TResult>;
-}
+import { BatchedOperation } from './types';
 
 /**
  * Generate sample amounts up to `maxFillAmount`.

packages/asset-swapper/src/utils/market_operation_utils/sampler_operations.ts

@@ -2,8 +2,7 @@ import { constants } from 'zlib';
 
 import { BigNumber, ERC20BridgeSource, SignedOrder } from '../..';
 
-import { BatchedOperation } from './sampler';
-import { DexSample } from './types';
+import { BatchedOperation, DexSample } from './types';
 
 /**
  * Composable operations that can be batched in a single transaction,

packages/asset-swapper/src/utils/market_operation_utils/types.ts

@@ -1,3 +1,4 @@
+import { IERC20BridgeSamplerContract } from '@0x/contract-wrappers';
 import { BigNumber } from '@0x/utils';
 
 import { SignedOrderWithFillableAmounts } from '../../types';
@@ -176,3 +177,11 @@ export interface GetMarketOrdersOpts {
      */
     fees: { [source: string]: BigNumber };
 }
+
+/**
+ * A composable operation the be run in `DexOrderSampler.executeAsync()`.
+ */
+export interface BatchedOperation<TResult> {
+    encodeCall(contract: IERC20BridgeSamplerContract): string;
+    handleCallResultsAsync(contract: IERC20BridgeSamplerContract, callResults: string): Promise<TResult>;
+}