Add revert reason parsing to error handling decorator

packages/contract-wrappers/src/utils/constants.ts

@@ -4,6 +4,7 @@ export const constants = {
     NULL_ADDRESS: '0x0000000000000000000000000000000000000000',
     TESTRPC_NETWORK_ID: 50,
     INVALID_JUMP_PATTERN: 'invalid JUMP at',
+    REVERT: 'revert',
     OUT_OF_GAS_PATTERN: 'out of gas',
     INVALID_TAKER_FORMAT: 'instance.taker is not of a type(s) string',
     // tslint:disable-next-line:custom-no-magic-numbers

packages/contract-wrappers/src/utils/decorators.ts

@@ -1,3 +1,4 @@
+import { RevertReason } from '@0xproject/types';
 import * as _ from 'lodash';
 
 import { AsyncMethod, ContractWrappersError, SyncMethod } from '../types';
@@ -13,6 +14,10 @@ const contractCallErrorTransformer = (error: Error) => {
     if (_.includes(error.message, constants.OUT_OF_GAS_PATTERN)) {
         return new Error(ContractWrappersError.OutOfGas);
     }
+    if (_.includes(error.message, constants.REVERT)) {
+        const revertReason = error.message.split(constants.REVERT)[1].trim();
+        return new Error(revertReason);
+    }
     return error;
 };