Changes to abi-gen after code review

* Added change to CHANGELOG
* Renamed variable and context to ctor to avoid keyword
* Used lodash' isUndefined to better check ctor

2 files changed, 5 insertions, 4 deletions

diff --git a/packages/abi-gen/CHANGELOG.md b/packages/abi-gen/CHANGELOG.md
index 346bba4bf..0afd6abd4 100644
--- a/packages/abi-gen/CHANGELOG.md
+++ b/packages/abi-gen/CHANGELOG.md
@@ -4,3 +4,4 @@ v0.x.x - _TBD, 2018_
 ------------------------
 * Fixed array typings with union types (#295)
 * Add event ABIs to context data passed to templates (#302)
+* Add constructor ABIs to context data passed to templates (#304)
\ No newline at end of file
diff --git a/packages/abi-gen/src/index.ts b/packages/abi-gen/src/index.ts
index 65dc1c607..527af32b1 100644
--- a/packages/abi-gen/src/index.ts
+++ b/packages/abi-gen/src/index.ts
@@ -76,9 +76,9 @@ for (const abiFileName of abiFileNames) {
         process.exit(1);
     }
 
-    let constructor = ABI.find((abi: Web3.AbiDefinition) => abi.type === ABI_TYPE_CONSTRUCTOR) as Web3.ConstructorAbi;
-    if (!constructor) {
-        constructor = utils.getEmptyConstructor(); // The constructor exists, but it's implicit in JSON's ABI definition
+    let ctor = ABI.find((abi: Web3.AbiDefinition) => abi.type === ABI_TYPE_CONSTRUCTOR) as Web3.ConstructorAbi;
+    if (_.isUndefined(ctor)) {
+        ctor = utils.getEmptyConstructor(); // The constructor exists, but it's implicit in JSON's ABI definition
     }
 
     const methodAbis = ABI.filter((abi: Web3.AbiDefinition) => abi.type === ABI_TYPE_METHOD) as Web3.MethodAbi[];
@@ -101,7 +101,7 @@ for (const abiFileName of abiFileNames) {
 
     const contextData = {
         contractName: namedContent.name,
-        constructor,
+        ctor,
         methods: methodsData,
         events: eventAbis,
     };