style(eslint): align codebase with standard airbnb codestyle

Author: char0n

.eslintrc

@@ -1,34 +1,21 @@
 {
+  "root": true,
   "extends": "eslint-config-airbnb-base",
   "env": {
-    "node": true
+    "shared-node-browser": true,
+    "es6": true,
+    "es2017": true
+  },
+  "parserOptions": {
+    "sourceType": "module",
+    "ecmaFeatures": {
+      "impliedStrict": true
+    }
   },
   "rules": {
-    "class-methods-use-this": 0,
-    "consistent-return": 0,
-    "no-plusplus": 0,
-    "camelcase": 2,
-    "func-names": 0,
-    "brace-style": [2, "stroustrup"],
-    "no-param-reassign": 0,
-    "semi": [2, "never"],
-    "strict": 0,
-    "quotes": [2, "single"],
-    "comma-dangle": 0,
-    "arrow-body-style": 0,
-    "guard-for-in": 0,
-    "no-unused-vars": 0,
-    "vars-on-top": 0,
-    "no-continue": 0,
-    "no-multi-spaces": 1,
-    "no-multi-assign": 0,
-    "no-template-curly-in-string": 0,
-    "no-restricted-syntax": 0,
-    "no-use-before-define": [2,"nofunc"],
-    "no-underscore-dangle": 0,
-    "no-unused-expressions": [2, {"allowShortCircuit": true}],
-    "object-curly-spacing": [2, "never"],
-    "import/prefer-default-export": 1,
-    "import/no-extraneous-dependencies": ["error", {"devDependencies": ["!test/**/*.js"]}]
+    "arrow-body-style": 0, // will be eliminated by prettier
+
+    "no-param-reassign": 0, // needs to be eliminated in future
+    "no-use-before-define": [2, "nofunc"] // needs to be eliminated in future
   }
 }

jest.config.js

@@ -1,4 +1,4 @@
-'use strict'
+'use strict';
 
 module.exports = {
   testEnvironment: 'node',
@@ -16,4 +16,4 @@ module.exports = {
     '<rootDir>/test/specmap/data/',
     '<rootDir>/test/webpack-bundle/.tmp/'
   ]
-}
+};

src/constants.js

@@ -1,2 +1,2 @@
 // eslint-disable-next-line import/prefer-default-export
-export const ACCEPT_HEADER_VALUE_FOR_DOCUMENTS = 'application/json, application/yaml'
+export const ACCEPT_HEADER_VALUE_FOR_DOCUMENTS = 'application/json, application/yaml';