Implement zeroEx.awaitTransactionMined

1 files changed, 14 insertions, 0 deletions

diff --git a/src/0x.ts b/src/0x.ts
index 3cf672a1b..e92c92e1f 100644
--- a/src/0x.ts
+++ b/src/0x.ts
@@ -1,5 +1,6 @@
 import * as _ from 'lodash';
 import * as BigNumber from 'bignumber.js';
+import * as Web3 from 'web3';
 import {SchemaValidator, schemas} from '0x-json-schemas';
 import {bigNumberConfigs} from './bignumber_config';
 import * as ethUtil from 'ethereumjs-util';
@@ -248,4 +249,17 @@ export class ZeroEx {
 
         throw new Error(ZeroExError.InvalidSignature);
     }
+    public async awaitTransactionMined(txHash: string,
+                                       pollingIntervalMs: number = 500): Promise<Web3.TransactionReceipt> {
+        const txReceiptPromise = new Promise((resolve: (receipt: Web3.TransactionReceipt) => void, reject) => {
+            const intervalId = setInterval(async () => {
+                const transactionReceipt = await this._web3Wrapper.getTransactionReceiptAsync(txHash);
+                if (!_.isNull(transactionReceipt)) {
+                     clearInterval(intervalId);
+                     resolve(transactionReceipt);
+                }
+            }, pollingIntervalMs);
+        });
+        return txReceiptPromise;
+    }
 }