.editorconfig

@@ -1,16 +1,13 @@
-root = true
+# editorconfig.org
 
 [*]
-indent_style = tab
-indent_size = 4
 charset = utf-8
-trim_trailing_whitespace = true
-insert_final_newline = true
-max_line_length = 233
-
-[*.json]
 indent_style = space
 indent_size = 2
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
 
 [*.md]
+insert_final_newline = false
 trim_trailing_whitespace = false

.eslintignore

@@ -0,0 +1,5 @@
+/client
+/dist
+!/test/client
+coverage
+node_modules

.eslintrc.js

@@ -0,0 +1,70 @@
+"use strict";
+
+module.exports = {
+  extends: ["webpack", "prettier"],
+  parser: "@babel/eslint-parser",
+  parserOptions: {
+    sourceType: "script",
+    ecmaVersion: 2018,
+  },
+  env: {
+    node: true,
+    es6: true,
+  },
+  rules: {
+    curly: "error",
+    "consistent-return": "off",
+    "no-param-reassign": "off",
+    "no-underscore-dangle": "off",
+    "prefer-destructuring": ["error", { object: false, array: false }],
+    "prefer-rest-params": "off",
+    strict: ["error", "safe"],
+    "global-require": "off",
+  },
+  overrides: [
+    {
+      files: ["client-src/**/*.js"],
+      excludedFiles: [
+        "client-src/webpack.config.js",
+        "client-src/modules/logger/SyncBailHookFake.js",
+      ],
+      parserOptions: {
+        sourceType: "module",
+        allowImportExportEverywhere: true,
+      },
+      env: {
+        browser: true,
+      },
+      rules: {
+        "import/extensions": ["error", "always"],
+      },
+    },
+    {
+      files: ["test/**/*.js"],
+      rules: {
+        "no-console": "off",
+      },
+    },
+    {
+      files: [
+        "test/client/**/*.js",
+        "test/e2e/**/*.js",
+        "test/fixtures/**/*.js",
+        "test/server/liveReload-option.test.js",
+      ],
+      env: {
+        browser: true,
+        node: true,
+      },
+    },
+    {
+      files: ["examples/**/*.js"],
+      env: {
+        browser: true,
+      },
+      rules: {
+        "no-console": "off",
+      },
+    },
+  ],
+};

.github/CODEOWNERS

@@ -0,0 +1 @@
+* @alexander-akait @hiroppy @Loonride @snitin315 @anshumanv

.github/FUNDING.yml

@@ -0,0 +1 @@
+open_collective: webpack

.github/ISSUE_TEMPLATE.md

@@ -1,15 +1,51 @@
-<!-- Before creating an issue please make sure you are using the latest version of webpack-dev-server and webpack. -->
+<!--
+  Please note that this template is not optional.
+  Please fill out _ALL_ fields, or your issue may be closed as "invalid."
+  Please do not delete this template.
+  Please ask questions on StackOverflow or Gitter (https://gitter.im/webpack/webpack).
+  General questions, how-to questions, and support requests will be closed.
+-->
 
-**Do you want to request a *feature* or report a *bug*?**
-<!-- Please ask questions on StackOverflow or the webpack Gitter (https://gitter.im/webpack/webpack). Questions will be closed. -->
+<!--
+  Please place an x, no spaces, in all [ ] that apply
+  Please note that we are NOT accepting FEATURE requests at this time.
+-->
 
-**What is the current behavior?**
+- [ ] This is a **bug**
+- [ ] This is a **modification** request
 
-**If the current behavior is a bug, please provide the steps to reproduce.**
-<!-- A great way to do this is to provide your configuration via a GitHub gist. -->
+### Code
 
-**What is the expected behavior?**
+<!--
+  If you have a large amount of code to share which demonstrates the problem
+  you're experiencing, or your webpack config is very large, please provide a link
+  to your repository rather than pasting code. We'd also encourage you to use a
+  Github Gist link instead of pasting code. Otherwise, please paste relevant
+  short snippets below.
 
-**If this is a feature request, what is motivation or use case for changing the behavior?**
+  For bugs, please do consider providing a link to a stripped-down, bare-bones
+  repo that can reproduce the problem you're experiencing. Many times, bugs
+  aren't actual bugs, but rather specific issues with loaders, plugins, or
+  an environment/OS. Problems with complicated or large applications will almost
+  always require this to be triaged.
+-->
 
-**Please mention your webpack and Operating System version.**
+```js
+// webpack.config.js
+```
+
+```js
+// additional code, remove if not needed.
+```
+
+### Please paste the results of `webpack-cli info` and `webpack-cli version` here, and mention other relevant information
+
+### Expected Behavior
+
+### Actual Behavior
+
+### For Bugs; How can we reproduce the behavior?
+
+<!-- See https://stackoverflow.com/help/minimal-reproducible-example for information on how to create good reproductions -->
+
+### For Features; What is the motivation and/or use-case for the feature?

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,15 +1,39 @@
-<!-- Thanks for submitting a pull request! Please provide enough information so that others can review your pull request. -->
+<!--
+  Thank you for submitting a pull request!
 
-**What kind of change does this PR introduce?**
-<!-- E.g. a bugfix, feature, refactoring, build related change, etc… -->
+  Please note that this template is not optional and all _ALL_ fields must be filled out, or your pull request may be rejected.
 
-**Did you add or update the `examples/`?**
+  Please do not delete this template.
+  Please do remove this header to acknowledge this message.
 
-**Summary**
-<!-- Explain the **motivation** for making this change. What existing problem does the pull request solve? -->
-<!-- Try to link to an open issue for more information. -->
+  Please place an x, no spaces, in all [ ] that apply
+-->
 
-**Does this PR introduce a breaking change?**
-<!-- If this PR introduces a breaking change, please describe the impact and a migration path for existing applications. -->
+- [ ] This is a **bugfix**
+- [ ] This is a **feature**
+- [ ] This is a **code refactor**
+- [ ] This is a **test update**
+- [ ] This is a **docs update**
+- [ ] This is a **metadata update**
 
-**Other information**
+### For Bugs and Features; did you add new tests?
+
+<!-- Please note that we won't approve your changes if you don't add tests. -->
+
+### Motivation / Use-Case
+
+<!--
+  What existing problem does the pull request solve?
+
+  Please explain the motivation or use-case for making this change.
+  If this Pull Request addresses an issue, please link to the issue.
+-->
+
+### Breaking Changes
+
+<!--
+  If this PR introduces a breaking change, please describe the impact and a
+  potential migration path for existing applications.
+-->
+
+### Additional Info

.github/dependabot.yml

@@ -0,0 +1,10 @@
+version: 2
+updates:
+  - package-ecosystem: npm
+    directory: "/"
+    schedule:
+      interval: daily
+      time: "04:00"
+      timezone: Europe/Berlin
+    open-pull-requests-limit: 10
+    versioning-strategy: lockfile-only

.github/workflows/nodejs.yml

@@ -0,0 +1,104 @@
+name: webpack-dev-server
+
+on:
+  push:
+    branches:
+      - master
+      - next
+      - v4
+  pull_request:
+    branches:
+      - master
+      - next
+      - v4
+
+jobs:
+  lint:
+    name: Lint - ${{ matrix.os }} - Node v${{ matrix.node-version }}
+
+    env:
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        node-version: [12.x]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: "npm"
+
+      - name: Use latest NPM
+        run: sudo npm i -g npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Lint
+        run: npm run lint
+
+      - name: Security audit
+        run: npm audit --production
+
+      - name: Check commit message
+        uses: wagoid/commitlint-github-action@v4
+
+  test:
+    name: Test - ${{ matrix.os }} - Node v${{ matrix.node-version }}, Webpack ${{ matrix.webpack-version }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [12.x, 14.x, 16.x]
+        webpack-version: [4, latest]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: "npm"
+
+      - name: Use latest NPM on ubuntu/macos
+        if: matrix.os == 'ubuntu-latest' || matrix.os == 'macos-latest'
+        run: sudo npm i -g npm
+
+      - name: Use latest NPM on windows
+        if: matrix.os == 'windows-latest'
+        run: npm i -g npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Install webpack ${{ matrix.webpack-version }}
+        if: matrix.webpack-version == '4'
+        run: npm i webpack@${{ matrix.webpack-version }} --save-dev --ignore-scripts
+
+      - name: Link webpack-dev-server
+        run: |
+          cp -R client tmp-client
+          npm link --ignore-scripts
+          npm link webpack-dev-server --ignore-scripts
+          rm -r client
+          cp -R tmp-client client
+
+      - name: Run tests for webpack version ${{ matrix.webpack-version }}
+        run: npm run test:coverage -- --ci
+
+      - name: Submit coverage data to codecov
+        uses: codecov/codecov-action@v2
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}