Adds ESLint.

.eslintrc

@@ -0,0 +1,7 @@
+{
+  "extends": "@meadow",
+
+  "parserOptions": {
+      "sourceType": "script"
+    },
+}

index.js

@@ -8,10 +8,12 @@ const DEFAULT_OPTS = {
   accessKeyId: '',
   secretAccessKey: '',
   queue: ''
-}
+};
 
 const Client = function Client (opts = DEFAULT_OPTS) {
-  if (!(this instanceof Client)) return new Client(opts);
+  if (!(this instanceof Client)) {
+    return new Client(opts);
+  }
 
   const { region, accessKeyId, secretAccessKey, queue } = opts;
 
@@ -44,7 +46,7 @@ Client.prototype.sendMessage = function sendMessage (payload) {
         return reject(err);
       }
 
-      resolve(data);
+      return resolve(data);
     });
   });
 };
@@ -72,6 +74,10 @@ Client.prototype.pollQueue = function pollQueue (opts = {}, handler) {
   const self = this;
 
   this.sqs.receiveMessage(this.receiveOptions, (err, data) => {
+    if (err) {
+      // Not needed
+    }
+
     const promises = [];
 
     if (data && data.Messages) {
@@ -109,7 +115,7 @@ Client.prototype.handleMessage = function handleMessage (message, handler) {
 
   return messagePromise.then(() => {
     return this.deleteMessage(message.ReceiptHandle);
-  })
+  });
 };
 
 /*

package.json

@@ -4,6 +4,7 @@
   "description": "Client for Amazon SQS with built-in long polling.",
   "main": "index.js",
   "scripts": {
+    "lint": "eslint ./ --ext .js",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "repository": {
@@ -29,5 +30,10 @@
   "dependencies": {
     "aws-sdk": "^2.4.7",
     "lodash.assign": "^4.0.9"
+  },
+  "devDependencies": {
+    "@meadow/eslint-config": "^2.0.0",
+    "babel-eslint": "^6.1.2",
+    "eslint": "^3.1.1"
   }
 }