refactor: code

.eslintignore

@@ -0,0 +1,4 @@
+/coverage
+/dist
+/node_modules
+/test/fixtures

.eslintrc.js

@@ -1,9 +1,12 @@
 module.exports = {
   root: true,
-  plugins: ['prettier'],
-  extends: ['@webpack-contrib/eslint-config-webpack'],
-  rules: {
-    'prettier/prettier': ['error'],
-    strict: ['off'],
-  },
+  extends: ['@webpack-contrib/eslint-config-webpack', 'prettier'],
+  overrides: [
+    {
+      files: ['lib/**/*.js'],
+      parserOptions: {
+        sourceType: 'script',
+      },
+    },
+  ],
 };

.github/CONTRIBUTING.md

@@ -131,6 +131,14 @@ Migration: see webpack/webpack#5225
 
 ```
 
+## Contributor License Agreement
+
+When submitting your contribution, a CLA (Contributor License Agreement) bot will come by to verify that you signed the [CLA](https://cla.js.foundation/webpack/webpack-dev-middleware).
+If it is your first time, it will link you to the right place to sign it.
+However, if you have committed your contributions using an email that is not the same as your email used on GitHub, the CLA bot can't accept your contribution.
+
+Run `git config user.email` to see your Git email, and verify it with [your GitHub email](https://github.com/settings/emails).
+
 ## Thanks
 
 For your interest, time, understanding, and for following this simple guide.

.github/ISSUE_TEMPLATE/BUG.md

@@ -1,7 +1,6 @@
 ---
 name: 🐛 Bug Report
 about: Something went awry and you'd like to tell us about it.
-
 ---
 
 <!--
@@ -15,11 +14,11 @@ about: Something went awry and you'd like to tell us about it.
   Head to StackOverflow or https://gitter.im/webpack/webpack.
 -->
 
-* Operating System:
-* Node Version:
-* NPM Version:
-* webpack Version:
-* webpack-dev-middleware Version:
+- Operating System:
+- Node Version:
+- NPM Version:
+- webpack Version:
+- webpack-dev-middleware Version:
 
 ### Expected Behavior
 
@@ -32,13 +31,13 @@ about: Something went awry and you'd like to tell us about it.
 ### Code
 
 ```js
-  // webpack.config.js
-  // If your code blocks are over 20 lines, please paste a link to a gist
-  // (https://gist.github.com).
+// webpack.config.js
+// If your code blocks are over 20 lines, please paste a link to a gist
+// (https://gist.github.com).
 ```
 
 ```js
-  // additional code, HEY YO remove this block if you don't need it
+// additional code, HEY YO remove this block if you don't need it
 ```
 
 ### How Do We Reproduce?

.github/ISSUE_TEMPLATE/DOCS.md

@@ -1,7 +1,6 @@
 ---
 name: 📚 Documentation
 about: Are the docs lacking or missing something? Do they need some new 🔥 hotness? Tell us here.
-
 ---
 
 <!--
@@ -26,5 +25,4 @@ Documentation Is:
 
 ### Please Explain in Detail...
 
-
-### Your Proposal for Changes
+### Your Proposal for Changes

.github/ISSUE_TEMPLATE/FEATURE.md

@@ -1,7 +1,6 @@
 ---
 name: ✨ Feature Request
 about: Suggest an idea for this project
-
 ---
 
 <!--
@@ -15,14 +14,12 @@ about: Suggest an idea for this project
   Head to StackOverflow or https://gitter.im/webpack/webpack.
 -->
 
-* Operating System:
-* Node Version:
-* NPM Version:
-* webpack Version:
-* webpack-dev-middleware Version:
+- Operating System:
+- Node Version:
+- NPM Version:
+- webpack Version:
+- webpack-dev-middleware Version:
 
 ### Feature Proposal
 
-
-
 ### Feature Use Case

.github/ISSUE_TEMPLATE/MODIFICATION.md

@@ -1,7 +1,6 @@
 ---
 name: 🔧 Modification Request
 about: Would you like something work differently? Have an alternative approach? This is the template for you.
-
 ---
 
 <!--
@@ -15,19 +14,14 @@ about: Would you like something work differently? Have an alternative approach?
   Head to StackOverflow or https://gitter.im/webpack/webpack.
 -->
 
-* Operating System:
-* Node Version:
-* NPM Version:
-* webpack Version:
-* webpack-dev-middleware Version:
-
+- Operating System:
+- Node Version:
+- NPM Version:
+- webpack Version:
+- webpack-dev-middleware Version:
 
 ### Expected Behavior / Situation
 
-
-
 ### Actual Behavior / Situation
 
-
-
 ### Modification Proposal

.github/ISSUE_TEMPLATE/SUPPORT.md

@@ -1,9 +1,8 @@
 ---
 name: 🆘 Support, Help, and Advice
 about: 👉🏽 Need support, help, or advice? Don't open an issue! Head to StackOverflow or https://gitter.im/webpack/webpack.
-
 ---
 
 Hey there! If you need support, help, or advice then this is not the place to ask.
 Please visit [StackOverflow](https://stackoverflow.com/questions/tagged/webpack)
-or [the Webpack Gitter](https://gitter.im/webpack/webpack) instead.
+or [the Webpack Gitter](https://gitter.im/webpack/webpack) instead.

.github/PULL_REQUEST_TEMPLATE.md

@@ -32,4 +32,4 @@ This PR contains a:
   migration path for existing applications.
 -->
 
-### Additional Info
+### Additional Info

.prettierignore

@@ -1,3 +1,5 @@
-coverage
-node_modules
+/coverage
+/dist
+/node_modules
+/test/fixtures
 CHANGELOG.md

lib/DevMiddlewareError.js

@@ -1,3 +1,5 @@
 'use strict';
 
-module.exports = class DevMiddlewareError extends Error {};
+class DevMiddlewareError extends Error {}
+
+module.exports = DevMiddlewareError;

index.js → lib/index.js

@@ -2,8 +2,8 @@
 
 const mime = require('mime');
 
-const middleware = require('./lib/middleware');
-const reporter = require('./lib/utils/reporter');
+const middleware = require('./middleware');
+const reporter = require('./utils/reporter');
 const {
   setupHooks,
   setupRebuild,
@@ -12,7 +12,7 @@ const {
   setupOutputFileSystem,
   getFilenameFromUrl,
   ready,
-} = require('./lib/utils');
+} = require('./utils');
 
 const noop = () => {};
 

lib/utils/index.js

@@ -1,3 +1,5 @@
+'use strict';
+
 const getFilenameFromUrl = require('./getFilenameFromUrl');
 const handleRangeHeaders = require('./handleRangeHeaders');
 const ready = require('./ready');

lib/utils/setupHooks.js

@@ -1,3 +1,5 @@
+'use strict';
+
 function setupHooks(context) {
   function invalid(callback) {
     if (context.state) {

lib/utils/setupLogger.js

@@ -1,3 +1,5 @@
+'use strict';
+
 const weblog = require('webpack-log');
 
 function setupLogger(context) {

lib/utils/setupRebuild.js

@@ -1,3 +1,5 @@
+'use strict';
+
 function setupRebuild(context) {
   function rebuild() {
     if (context.state) {