Use airbnb eslint rules and disable what we don't want

Author: robbie-c

.eslintrc

@@ -1,11 +1,19 @@
 {
-  "extends": "eslint:recommended",
+  "extends": "airbnb",
   "env": {
     "browser": true,
     "node": true,
     "es6": true
   },
   "ecmaFeatures": {
-    "modules": true,
+    "modules": true
+  },
+  "rules": {
+    "strict": 0,
+    "no-var": 0,
+    "no-param-reassign": 0,
+    "prefer-arrow-callback": 0,
+    "func-names": 0,
+    "vars-on-top": 0
   }
 }

gulpfile.js

@@ -1,14 +1,13 @@
 'use strict';
 
-var babelify = require("babelify");
+var babelify = require('babelify');
 var browserify = require('browserify');
 var gulp = require('gulp');
 var source = require('vinyl-source-stream');
 var buffer = require('vinyl-buffer');
 var uglify = require('gulp-uglify');
 var sourcemaps = require('gulp-sourcemaps');
 var gutil = require('gulp-util');
-var merge = require('merge-stream');
 
 var browserifyConfig = {
   entries: './src/set-functions.js',

package.json

@@ -25,6 +25,10 @@
     "babelify": "^7.3.0",
     "browserify": "^13.1.1",
     "eslint": "^3.11.1",
+    "eslint-config-airbnb": "^13.0.0",
+    "eslint-plugin-import": "^2.2.0",
+    "eslint-plugin-jsx-a11y": "^2.2.3",
+    "eslint-plugin-react": "^6.7.1",
     "expect.js": "^0.3.1",
     "gulp": "^3.9.1",
     "gulp-sourcemaps": "^1.9.1",

src/set-functions.js

@@ -88,7 +88,6 @@ module.exports.difference = function difference(a, b) {
   var result = new Set();
 
   if (a) {
-
     if (!b.has) {
       b = new Set(b);
     }
@@ -151,7 +150,7 @@ var BreakException = {};
  *
  * @param {Set} a
  * @param {Set} b
- * @returns {bool}
+ * @returns {boolean}
  */
 module.exports.isEqual = function isEqual(a, b) {
   'use strict';
@@ -172,24 +171,23 @@ module.exports.isEqual = function isEqual(a, b) {
     b = new Set(b);
   }
 
-  if (a.size != b.size) {
+  if (a.size !== b.size) {
     return false;
   }
 
   try {
     a.forEach(function (item) {
       if (!b.has(item)) {
         // short-circuit by throwing on first difference
-        throw BreakException
+        throw BreakException;
       }
     });
   } catch (e) {
     if (e === BreakException) {
       return false;
-    } else {
-      // pass on any exceptions that we didn't generate
-      throw e;
     }
+    // pass on any exceptions that we didn't generate
+    throw e;
   }
   return true;
 };