diff --git a/.eslintrc.js b/.eslintrc.js
index c64ab379c52..78e4fb1bb33 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -1,50 +1,53 @@
 
-const allowedModules = require("./allowedModules");
+const allowedModules = require('./allowedModules.js');
 
 module.exports = {
-  "env": {
-    "browser": true,
-    "commonjs": true
+  env: {
+    browser: true,
+    commonjs: true
   },
-  "settings": {
-    "import/resolver": {
-      "node": {
-        "moduleDirectory": ["node_modules", "./"]
+  settings: {
+    'import/resolver': {
+      node: {
+        moduleDirectory: ['node_modules', './']
       }
     }
   },
-  "extends": "standard",
-  "plugins": [
-    "prebid",
-    "import"
+  extends: 'standard',
+  plugins: [
+    'prebid',
+    'import'
   ],
-  "globals": {
-    "$$PREBID_GLOBAL$$": false
+  globals: {
+    '$$PREBID_GLOBAL$$': false,
+    'BROWSERSTACK_USERNAME': false,
+    'BROWSERSTACK_KEY': false
   },
-  "parserOptions": {
-    "sourceType": "module"
+  parserOptions: {
+    sourceType: 'module',
+    ecmaVersion: 2018,
   },
-  "rules": {
-    "comma-dangle": "off",
-    "semi": "off",
-    "space-before-function-paren": "off",
-    "import/extensions": ["error", "ignorePackages"],
+  rules: {
+    'comma-dangle': 'off',
+    semi: 'off',
+    'space-before-function-paren': 'off',
+    'import/extensions': ['error', 'ignorePackages'],
 
     // Exceptions below this line are temporary, so that eslint can be added into the CI process.
     // Violations of these styles should be fixed, and the exceptions removed over time.
     //
     // See Issue #1111.
-    "eqeqeq": "off",
-    "no-return-assign": "off",
-    "no-throw-literal": "off",
-    "no-undef": 2,
-    "no-useless-escape": "off",
-    "no-console": "error"
+    eqeqeq: 'off',
+    'no-return-assign': 'off',
+    'no-throw-literal': 'off',
+    'no-undef': 2,
+    'no-useless-escape': 'off',
+    'no-console': 'error'
   },
-  "overrides": Object.keys(allowedModules).map((key) => ({
-    "files": key + "/**/*.js",
-    "rules": {
-      "prebid/validate-imports": ["error", allowedModules[key]]
+  overrides: Object.keys(allowedModules).map((key) => ({
+    files: key + '/**/*.js',
+    rules: {
+      'prebid/validate-imports': ['error', allowedModules[key]]
     }
   }))
 };
diff --git a/gulpHelpers.js b/gulpHelpers.js
index bcaf3736f15..c0946edf93d 100644
--- a/gulpHelpers.js
+++ b/gulpHelpers.js
@@ -34,7 +34,6 @@ module.exports = {
   },
 
   jsonifyHTML: function (str) {
-    console.log(arguments);
     return str.replace(/\n/g, '')
       .replace(/<\//g, '<\\/')
       .replace(/\/>/g, '\\/>');
diff --git a/gulpfile.js b/gulpfile.js
index 088e3785747..8609177a8b9 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -11,10 +11,10 @@ var webpackStream = require('webpack-stream');
 var terser = require('gulp-terser');
 var gulpClean = require('gulp-clean');
 var KarmaServer = require('karma').Server;
-var karmaConfMaker = require('./karma.conf.maker');
+var karmaConfMaker = require('./karma.conf.maker.js');
 var opens = require('opn');
-var webpackConfig = require('./webpack.conf');
-var helpers = require('./gulpHelpers');
+var webpackConfig = require('./webpack.conf.js');
+var helpers = require('./gulpHelpers.js');
 var concat = require('gulp-concat');
 var header = require('gulp-header');
 var footer = require('gulp-footer');
@@ -71,7 +71,13 @@ function lint(done) {
   const isFixed = function (file) {
     return file.eslint != null && file.eslint.fixed;
   }
-  return gulp.src(['src/**/*.js', 'modules/**/*.js', 'test/**/*.js'], { base: './' })
+  return gulp.src([
+    'src/**/*.js',
+    'modules/**/*.js',
+    'test/**/*.js',
+    'plugins/**/*.js',
+    './*.js'
+  ], { base: './' })
     .pipe(gulpif(argv.nolintfix, eslint(), eslint({ fix: true })))
     .pipe(eslint.format('stylish'))
     .pipe(eslint.failAfterError())
diff --git a/karma.conf.maker.js b/karma.conf.maker.js
index 8af216d6262..cf5999ba85e 100644
--- a/karma.conf.maker.js
+++ b/karma.conf.maker.js
@@ -3,7 +3,7 @@
 // For more information, see http://karma-runner.github.io/1.0/config/configuration-file.html
 
 var _ = require('lodash');
-var webpackConf = require('./webpack.conf');
+var webpackConf = require('./webpack.conf.js');
 var karmaConstants = require('karma').constants;
 
 function newWebpackConfig(codeCoverage) {
diff --git a/nightwatch.conf.js b/nightwatch.conf.js
index 072114953fe..0f34e6d0989 100644
--- a/nightwatch.conf.js
+++ b/nightwatch.conf.js
@@ -1,37 +1,36 @@
 module.exports = (function(settings) {
-	var browsers = require('./browsers.json');
-	delete browsers['bs_ie_9_windows_7'];
-	
-	for(var browser in browsers) {
-		if(browsers[browser].browser === 'iphone') continue;
+  var browsers = require('./browsers.json');
+  delete browsers['bs_ie_9_windows_7'];
 
-		var desiredCapabilities = {
-			"browserName": browsers[browser].browser,
-			"version": browsers[browser].browser_version,
-			"platform": browsers[browser].os,
-			"os": browsers[browser].os,
-			"os_version": browsers[browser].os_version,
-			"browser": browsers[browser].browser,
-			"browser_version": browsers[browser].browser_version,
-		};
+  for (var browser in browsers) {
+    if (browsers[browser].browser === 'iphone') continue;
 
-		settings.test_settings[browser] = {
-			"silent": true,
-      "exclude":["custom-assertions","custom-commands","common","custom-reporter"],
-      "screenshots" : {
-        "enabled" : false,
-        "path" : ""
-      },
-			"javascriptEnabled": true,
-			"acceptSslCerts": true,
-			"browserstack.local": true,
-			"browserstack.debug": true,
-			"browserstack.selenium_version" : "2.53.0",
-			"browserstack.user": "${BROWSERSTACK_USERNAME}",
-			"browserstack.key": "${BROWSERSTACK_KEY}"
-		};
-		settings.test_settings[browser]['desiredCapabilities'] = desiredCapabilities;
-	}
-	return settings;
+    var desiredCapabilities = {
+      'browserName': browsers[browser].browser,
+      'version': browsers[browser].browser_version,
+      'platform': browsers[browser].os,
+      'os': browsers[browser].os,
+      'os_version': browsers[browser].os_version,
+      'browser': browsers[browser].browser,
+      'browser_version': browsers[browser].browser_version,
+    };
 
+    settings.test_settings[browser] = {
+      'silent': true,
+      'exclude': ['custom-assertions', 'custom-commands', 'common', 'custom-reporter'],
+      'screenshots': {
+        'enabled': false,
+        'path': ''
+      },
+      'javascriptEnabled': true,
+      'acceptSslCerts': true,
+      'browserstack.local': true,
+      'browserstack.debug': true,
+      'browserstack.selenium_version': '2.53.0',
+      'browserstack.user': `${BROWSERSTACK_USERNAME}`,
+      'browserstack.key': `${BROWSERSTACK_KEY}`
+    };
+    settings.test_settings[browser]['desiredCapabilities'] = desiredCapabilities;
+  }
+  return settings;
 })(require('./nightwatch.browserstack.json'));
diff --git a/plugins/eslint/validateImports.js b/plugins/eslint/validateImports.js
index a39bf9b26d5..37a87fffb50 100644
--- a/plugins/eslint/validateImports.js
+++ b/plugins/eslint/validateImports.js
@@ -62,7 +62,7 @@ module.exports = {
             let importPath = node.source.value.trim();
             flagErrors(context, node, importPath);
           },
-          "ExportNamedDeclaration[source]"(node) {
+          'ExportNamedDeclaration[source]'(node) {
             let importPath = node.source.value.trim();
             flagErrors(context, node, importPath);
           }
diff --git a/test/.eslintrc.js b/test/.eslintrc.js
index 1048b8be173..0ea3276dbaf 100644
--- a/test/.eslintrc.js
+++ b/test/.eslintrc.js
@@ -1,41 +1,41 @@
 module.exports = {
-  "env": {
-    "browser": true,
-    "mocha": true
+  env: {
+    browser: true,
+    mocha: true
   },
-  "extends": "standard",
-  "globals": {
-    "$$PREBID_GLOBAL$$": false
+  extends: 'standard',
+  globals: {
+    '$$PREBID_GLOBAL$$': false
   },
-  "parserOptions": {
-    "sourceType": "module"
+  parserOptions: {
+    sourceType: 'module'
   },
-  "rules": {
-    "comma-dangle": "off",
-    "semi": "off",
-    "space-before-function-paren": "off",
+  rules: {
+    'comma-dangle': 'off',
+    semi: 'off',
+    'space-before-function-paren': 'off',
 
     // Exceptions below this line are temporary, so that eslint can be added into the CI process.
     // Violations of these styles should be fixed, and the exceptions removed over time.
     //
     // See Issue #1111.
-    "camelcase": "off",
-    "eqeqeq": "off",
-    "no-mixed-spaces-and-tabs": "off",
-    "no-tabs": "off",
-    "no-unused-expressions": "off",
-    "import/no-duplicates": "off",
-    "import/extensions": "off",
-    "no-template-curly-in-string": "off",
-    "no-global-assign": "off",
-    "no-path-concat": "off",
-    "no-redeclare": "off",
-    "node/no-deprecated-api": "off",
-    "no-return-assign": "off",
-    "no-undef": "off",
-    "no-unused-vars": "off",
-    "no-use-before-define": "off",
-    "no-useless-escape": "off",
-    "one-var": "off"
+    camelcase: 'off',
+    eqeqeq: 'off',
+    'no-mixed-spaces-and-tabs': 'off',
+    'no-tabs': 'off',
+    'no-unused-expressions': 'off',
+    'import/no-duplicates': 'off',
+    'import/extensions': 'off',
+    'no-template-curly-in-string': 'off',
+    'no-global-assign': 'off',
+    'no-path-concat': 'off',
+    'no-redeclare': 'off',
+    'node/no-deprecated-api': 'off',
+    'no-return-assign': 'off',
+    'no-undef': 'off',
+    'no-unused-vars': 'off',
+    'no-use-before-define': 'off',
+    'no-useless-escape': 'off',
+    'one-var': 'off'
   }
 };
diff --git a/wdio.conf.js b/wdio.conf.js
index 4d93f3d88d3..c9aaa3f160d 100644
--- a/wdio.conf.js
+++ b/wdio.conf.js
@@ -37,29 +37,29 @@ function getCapabilities() {
 }
 
 exports.config = {
-    specs: [
-        './test/spec/e2e/**/*.spec.js'
-    ],
-    services: [
-      ['browserstack', {
-        browserstackLocal: true
-      }]
-    ],
-    user: process.env.BROWSERSTACK_USERNAME,
-    key: process.env.BROWSERSTACK_ACCESS_KEY,
-    maxInstances: 5, // Do not increase this, since we have only 5 parallel tests in browserstack account
-    capabilities: getCapabilities(),
-    logLevel: 'silent', // put option here: info | trace | debug | warn| error | silent
-    bail: 0,
-    waitforTimeout: 60000, // Default timeout for all waitFor* commands.
-    connectionRetryTimeout: 60000, // Default timeout in milliseconds for request if Selenium Grid doesn't send response
-    connectionRetryCount: 3, // Default request retries count
-    framework: 'mocha',
-    mochaOpts: {
-        ui: 'bdd',
-        timeout: 60000,
-        compilers: ['js:babel-register'],
-    },
-    // if you see error, update this to spec reporter and logLevel above to get detailed report.
-    reporters: ['concise']
+  specs: [
+    './test/spec/e2e/**/*.spec.js'
+  ],
+  services: [
+    ['browserstack', {
+      browserstackLocal: true
+    }]
+  ],
+  user: process.env.BROWSERSTACK_USERNAME,
+  key: process.env.BROWSERSTACK_ACCESS_KEY,
+  maxInstances: 5, // Do not increase this, since we have only 5 parallel tests in browserstack account
+  capabilities: getCapabilities(),
+  logLevel: 'silent', // put option here: info | trace | debug | warn| error | silent
+  bail: 0,
+  waitforTimeout: 60000, // Default timeout for all waitFor* commands.
+  connectionRetryTimeout: 60000, // Default timeout in milliseconds for request if Selenium Grid doesn't send response
+  connectionRetryCount: 3, // Default request retries count
+  framework: 'mocha',
+  mochaOpts: {
+    ui: 'bdd',
+    timeout: 60000,
+    compilers: ['js:babel-register'],
+  },
+  // if you see error, update this to spec reporter and logLevel above to get detailed report.
+  reporters: ['concise']
 }
diff --git a/webpack.conf.js b/webpack.conf.js
index 6f0841757b0..a738a2a0868 100644
--- a/webpack.conf.js
+++ b/webpack.conf.js
@@ -1,11 +1,11 @@
 var prebid = require('./package.json');
 var path = require('path');
 var webpack = require('webpack');
-var helpers = require('./gulpHelpers');
+var helpers = require('./gulpHelpers.js');
 var RequireEnsureWithoutJsonp = require('./plugins/RequireEnsureWithoutJsonp.js');
 var { BundleAnalyzerPlugin } = require('webpack-bundle-analyzer');
 var argv = require('yargs').argv;
-var allowedModules = require('./allowedModules');
+var allowedModules = require('./allowedModules.js');
 
 // list of module names to never include in the common bundle chunk
 var neverBundle = [
@@ -23,18 +23,20 @@ if (argv.analyze) {
   )
 }
 
-plugins.push(  // this plugin must be last so it can be easily removed for karma unit tests
+plugins.push( // this plugin must be last so it can be easily removed for karma unit tests
   new webpack.optimize.CommonsChunkPlugin({
     name: 'prebid',
     filename: 'prebid-core.js',
     minChunks: function(module) {
-       return (
+      return (
         (
           module.context && module.context.startsWith(path.resolve('./src')) &&
           !(module.resource && neverBundle.some(name => module.resource.includes(name)))
         ) ||
-        module.resource && (allowedModules.src.concat(['core-js'])).some(
-          name => module.resource.includes(path.resolve('./node_modules/' + name))
+        (
+          module.resource && (allowedModules.src.concat(['core-js'])).some(
+            name => module.resource.includes(path.resolve('./node_modules/' + name))
+          )
         )
       );
     }
@@ -50,7 +52,7 @@ module.exports = {
     ],
   },
   output: {
-    jsonpFunction: prebid.globalVarName + "Chunk"
+    jsonpFunction: prebid.globalVarName + 'Chunk'
   },
   module: {
     rules: [