7 files changed, 90 insertions, 12 deletions
diff --git a/packages/web3-wrapper/CHANGELOG.json b/packages/web3-wrapper/CHANGELOG.json
index b938f6986..cc65c2a7d 100644
--- a/packages/web3-wrapper/CHANGELOG.json
+++ b/packages/web3-wrapper/CHANGELOG.json
@@ -1,5 +1,18 @@
 [
     {
+        "version": "3.1.5",
+        "changes": [
+            {
+                "note": "Add unmarshalling of transaction receipts",
+                "pr": 1291
+            },
+            {
+                "note": "Return `undefined` instead of `null` if transaction receipt not found",
+                "pr": 1291
+            }
+        ]
+    },
+    {
         "timestamp": 1542208198,
         "version": "3.1.4",
         "changes": [
diff --git a/packages/web3-wrapper/package.json b/packages/web3-wrapper/package.json
index 2469f7627..8d4d7ec35 100644
--- a/packages/web3-wrapper/package.json
+++ b/packages/web3-wrapper/package.json
@@ -10,6 +10,7 @@
     "scripts": {
         "build": "tsc -b",
         "build:ci": "yarn build",
+        "watch_without_deps": "tsc -w",
         "clean": "shx rm -rf lib generated_docs",
         "lint": "tslint --format stylish --project .",
         "test": "yarn run_mocha",
diff --git a/packages/web3-wrapper/src/index.ts b/packages/web3-wrapper/src/index.ts
index 679563a2b..4d20ba9be 100644
--- a/packages/web3-wrapper/src/index.ts
+++ b/packages/web3-wrapper/src/index.ts
@@ -52,6 +52,9 @@ export {
     CallDataRPC,
     BlockWithoutTransactionDataRPC,
     BlockWithTransactionDataRPC,
+    TransactionReceiptStatusRPC,
+    TransactionReceiptRPC,
+    LogEntryRPC,
     TransactionRPC,
     TxDataRPC,
 } from './types';
diff --git a/packages/web3-wrapper/src/marshaller.ts b/packages/web3-wrapper/src/marshaller.ts
index 299c6a64c..7bd274c85 100644
--- a/packages/web3-wrapper/src/marshaller.ts
+++ b/packages/web3-wrapper/src/marshaller.ts
@@ -9,6 +9,7 @@ import {
     LogEntry,
     RawLogEntry,
     Transaction,
+    TransactionReceipt,
     TxData,
 } from 'ethereum-types';
 import ethUtil = require('ethereumjs-util');
@@ -21,6 +22,7 @@ import {
     BlockWithTransactionDataRPC,
     CallDataRPC,
     CallTxDataBaseRPC,
+    TransactionReceiptRPC,
     TransactionRPC,
     TxDataRPC,
 } from './types';
@@ -92,6 +94,22 @@ export const marshaller = {
         return tx;
     },
     /**
+     * Unmarshall transaction receipt
+     * @param txReceiptRpc transaction receipt to unmarshall
+     * @return unmarshalled transaction receipt
+     */
+    unmarshalTransactionReceipt(txReceiptRpc: TransactionReceiptRPC): TransactionReceipt {
+        const txReceipt = {
+            ...txReceiptRpc,
+            blockNumber: utils.convertHexToNumber(txReceiptRpc.blockNumber),
+            transactionIndex: utils.convertHexToNumber(txReceiptRpc.transactionIndex),
+            cumulativeGasUsed: utils.convertHexToNumber(txReceiptRpc.cumulativeGasUsed),
+            gasUsed: utils.convertHexToNumber(txReceiptRpc.gasUsed),
+            logs: _.map(txReceiptRpc.logs, marshaller.unmarshalLog.bind(marshaller)),
+        };
+        return txReceipt;
+    },
+    /**
      * Unmarshall transaction data
      * @param txDataRpc transaction data to unmarshall
      * @return unmarshalled transaction data
diff --git a/packages/web3-wrapper/src/types.ts b/packages/web3-wrapper/src/types.ts
index e81039186..eb5a35f07 100644
--- a/packages/web3-wrapper/src/types.ts
+++ b/packages/web3-wrapper/src/types.ts
@@ -41,6 +41,33 @@ export interface TransactionRPC {
     input: string;
 }
 
+export interface TransactionReceiptRPC {
+    blockHash: string;
+    blockNumber: string;
+    transactionHash: string;
+    transactionIndex: string;
+    from: string;
+    to: string;
+    status: TransactionReceiptStatusRPC;
+    cumulativeGasUsed: string;
+    gasUsed: string;
+    contractAddress: string | null;
+    logs: LogEntryRPC[];
+}
+
+export interface LogEntryRPC {
+    logIndex: string | null;
+    transactionIndex: string | null;
+    transactionHash: string;
+    blockHash: string | null;
+    blockNumber: string | null;
+    address: string;
+    data: string;
+    topics: string[];
+}
+
+export type TransactionReceiptStatusRPC = null | string | 0 | 1;
+
 export interface CallTxDataBaseRPC {
     to?: string;
     value?: string;
diff --git a/packages/web3-wrapper/src/web3_wrapper.ts b/packages/web3-wrapper/src/web3_wrapper.ts
index be1713f20..f1247e48a 100644
--- a/packages/web3-wrapper/src/web3_wrapper.ts
+++ b/packages/web3-wrapper/src/web3_wrapper.ts
@@ -27,6 +27,7 @@ import {
     BlockWithoutTransactionDataRPC,
     BlockWithTransactionDataRPC,
     NodeType,
+    TransactionReceiptRPC,
     TransactionRPC,
     Web3WrapperErrors,
 } from './types';
@@ -212,20 +213,23 @@ export class Web3Wrapper {
         return networkId;
     }
     /**
-     * Retrieves the transaction receipt for a given transaction hash
+     * Retrieves the transaction receipt for a given transaction hash if found
      * @param txHash Transaction hash
-     * @returns The transaction receipt, including it's status (0: failed, 1: succeeded or undefined: not found)
+     * @returns The transaction receipt, including it's status (0: failed, 1: succeeded). Returns undefined if transaction not found.
      */
-    public async getTransactionReceiptAsync(txHash: string): Promise<TransactionReceipt> {
+    public async getTransactionReceiptIfExistsAsync(txHash: string): Promise<TransactionReceipt | undefined> {
         assert.isHexString('txHash', txHash);
-        const transactionReceipt = await this.sendRawPayloadAsync<TransactionReceipt>({
+        const transactionReceiptRpc = await this.sendRawPayloadAsync<TransactionReceiptRPC>({
             method: 'eth_getTransactionReceipt',
             params: [txHash],
         });
-        if (!_.isNull(transactionReceipt)) {
-            transactionReceipt.status = Web3Wrapper._normalizeTxReceiptStatus(transactionReceipt.status);
+        if (!_.isNull(transactionReceiptRpc)) {
+            transactionReceiptRpc.status = Web3Wrapper._normalizeTxReceiptStatus(transactionReceiptRpc.status);
+            const transactionReceipt = marshaller.unmarshalTransactionReceipt(transactionReceiptRpc);
+            return transactionReceipt;
+        } else {
+            return undefined;
         }
-        return transactionReceipt;
     }
     /**
      * Retrieves the transaction data for a given transaction
@@ -572,8 +576,8 @@ export class Web3Wrapper {
             assert.isNumber('timeoutMs', timeoutMs);
         }
         // Immediately check if the transaction has already been mined.
-        let transactionReceipt = await this.getTransactionReceiptAsync(txHash);
-        if (!_.isNull(transactionReceipt) && !_.isNull(transactionReceipt.blockNumber)) {
+        let transactionReceipt = await this.getTransactionReceiptIfExistsAsync(txHash);
+        if (!_.isUndefined(transactionReceipt) && !_.isNull(transactionReceipt.blockNumber)) {
             const logsWithDecodedArgs = _.map(
                 transactionReceipt.logs,
                 this.abiDecoder.tryToDecodeLogOrNoop.bind(this.abiDecoder),
@@ -600,8 +604,8 @@ export class Web3Wrapper {
                             return reject(Web3WrapperErrors.TransactionMiningTimeout);
                         }
 
-                        transactionReceipt = await this.getTransactionReceiptAsync(txHash);
-                        if (!_.isNull(transactionReceipt)) {
+                        transactionReceipt = await this.getTransactionReceiptIfExistsAsync(txHash);
+                        if (!_.isUndefined(transactionReceipt)) {
                             intervalUtils.clearAsyncExcludingInterval(intervalId);
                             const logsWithDecodedArgs = _.map(
                                 transactionReceipt.logs,
diff --git a/packages/web3-wrapper/test/web3_wrapper_test.ts b/packages/web3-wrapper/test/web3_wrapper_test.ts
index 164253777..935c67636 100644
--- a/packages/web3-wrapper/test/web3_wrapper_test.ts
+++ b/packages/web3-wrapper/test/web3_wrapper_test.ts
@@ -1,5 +1,5 @@
 import * as chai from 'chai';
-import { BlockParamLiteral, JSONRPCErrorCallback, JSONRPCRequestPayload } from 'ethereum-types';
+import { BlockParamLiteral, JSONRPCErrorCallback, JSONRPCRequestPayload, TransactionReceipt } from 'ethereum-types';
 import * as Ganache from 'ganache-core';
 import * as _ from 'lodash';
 import 'mocha';
@@ -98,6 +98,18 @@ describe('Web3Wrapper tests', () => {
             expect(typeof blockNumber).to.be.equal('number');
         });
     });
+    describe('#getTransactionReceiptAsync/awaitTransactionSuccessAsync', () => {
+        it('get block number', async () => {
+            const payload = { from: addresses[0], to: addresses[1], value: 1 };
+            const txHash = await web3Wrapper.sendTransactionAsync(payload);
+            await web3Wrapper.awaitTransactionSuccessAsync(txHash);
+            const receiptIfExists = await web3Wrapper.getTransactionReceiptIfExistsAsync(txHash);
+            expect(receiptIfExists).to.not.be.undefined();
+            const receipt = receiptIfExists as TransactionReceipt;
+            expect(receipt.transactionIndex).to.be.a('number');
+            expect(receipt.transactionHash).to.be.equal(txHash);
+        });
+    });
     describe('#getBlockIfExistsAsync', () => {
         it('gets block when supplied a valid BlockParamLiteral value', async () => {
             const blockParamLiteral = BlockParamLiteral.Earliest;