V4

.eslintrc.js

@@ -2,7 +2,19 @@
 
 const eslint = {
     extends: '@chrisblossom/eslint-config',
+    rules: {
+        'import/no-extraneous-dependencies': 'off',
+    },
     overrides: [
+        {
+            files: ['*.ts', '*.tsx', '.*.ts', '.*.tsx'],
+            rules: {
+                'promise/prefer-await-to-then': 'off',
+                'promise/always-return': 'off',
+                '@typescript-eslint/promise-function-async': 'off',
+                '@typescript-eslint/explicit-function-return-type': 'off',
+            },
+        },
         {
             files: ['dev-utils/**/*.js', 'dev-utils/**/.*.js'],
             parserOptions: {

README.md

@@ -31,6 +31,8 @@ By default, this plugin will remove all files inside webpack's `output.path` dir
 
 `npm install --save-dev clean-webpack-plugin`
 
+If you are using [Typescript](https://www.typescriptlang.org/), you might need to install `@types/webpack` and/or `@types/webpack-env` to your `devDependencies`.
+
 ## Usage
 
 ```js

dev-utils/get-webpack-version.js

@@ -9,10 +9,11 @@ function getWebpackVersion() {
     const webpackPath = require.resolve('webpack');
     const { dir } = path.parse(webpackPath);
 
-    const webpackPackageJson = readPkgUp.sync({ cwd: dir, normalize: false });
+    const webpackPackageJson =
+        readPkgUp.sync({ cwd: dir, normalize: false }) || {};
 
-    const version = webpackPackageJson.package.version
-        ? webpackPackageJson.package.version
+    const version = webpackPackageJson.packageJson.version
+        ? webpackPackageJson.packageJson.version
         : null;
 
     return version;

dev-utils/get-webpack-version.test.js

@@ -5,7 +5,7 @@ const getWebpackVersionTest = () => require('./get-webpack-version')();
 describe('webpackVersion', () => {
     test('returns major only and is type number', () => {
         jest.doMock('read-pkg-up', () => ({
-            sync: () => ({ package: { version: '4.29.0' } }),
+            sync: () => ({ packageJson: { version: '4.29.0' } }),
         }));
 
         const version = getWebpackVersionTest();
@@ -14,15 +14,17 @@ describe('webpackVersion', () => {
 
     test('handles alpha', () => {
         jest.doMock('read-pkg-up', () => ({
-            sync: () => ({ package: { version: '5.0.0-alpha.8' } }),
+            sync: () => ({ packageJson: { version: '5.0.0-alpha.8' } }),
         }));
 
         const version = getWebpackVersionTest();
         expect(version).toEqual('5.0.0-alpha.8');
     });
 
     test('returns null if no version found', () => {
-        jest.doMock('read-pkg-up', () => ({ sync: () => ({ package: {} }) }));
+        jest.doMock('read-pkg-up', () => ({
+            sync: () => ({ packageJson: {} }),
+        }));
 
         const version = getWebpackVersionTest();
         expect(version).toEqual(null);

dev-utils/node-version.js

@@ -5,7 +5,8 @@ const semver = require('semver');
 
 function getNodeVersion() {
     const packageJson =
-        readPkgUp.sync({ cwd: process.cwd(), normalize: false }).package || {};
+        readPkgUp.sync({ cwd: process.cwd(), normalize: false }).packageJson ||
+        {};
     const engines = packageJson.engines || {};
     const node = engines.node || '8.9.0';
 

dev-utils/node-version.test.js

@@ -11,7 +11,7 @@ test('handles undefined pkg', () => {
 });
 
 test('handles undefined engines', () => {
-    jest.doMock('read-pkg-up', () => ({ sync: () => ({ package: {} }) }));
+    jest.doMock('read-pkg-up', () => ({ sync: () => ({ packageJson: {} }) }));
 
     const nodeVersion = require('./node-version');
 
@@ -20,7 +20,7 @@ test('handles undefined engines', () => {
 
 test('handles undefined node', () => {
     jest.doMock('read-pkg-up', () => ({
-        sync: () => ({ package: { engines: { npm: '^5.0.0' } } }),
+        sync: () => ({ packageJson: { engines: { npm: '^5.0.0' } } }),
     }));
 
     const nodeVersion = require('./node-version');
@@ -30,7 +30,7 @@ test('handles undefined node', () => {
 
 test('handles non-digit characters', () => {
     jest.doMock('read-pkg-up', () => ({
-        sync: () => ({ package: { engines: { node: '>=10.0.0' } } }),
+        sync: () => ({ packageJson: { engines: { node: '>=10.0.0' } } }),
     }));
 
     const nodeVersion = require('./node-version');
@@ -40,7 +40,7 @@ test('handles non-digit characters', () => {
 
 test('handles empty node', () => {
     jest.doMock('read-pkg-up', () => ({
-        sync: () => ({ package: { engines: { node: '' } } }),
+        sync: () => ({ packageJson: { engines: { node: '' } } }),
     }));
 
     const nodeVersion = require('./node-version');

dev-utils/test-supported-webpack-versions.js

@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 
-/* eslint-disable arrow-body-style,no-param-reassign,promise/always-return */
+/* eslint-disable no-param-reassign,no-console */
 
 'use strict';
 
@@ -40,10 +40,10 @@ const webpackTestTasks = supported.map((version) => {
     const npmInstallTaskTitle = `npm ${npmCommandArgs.join(' ')}`;
     const npmInstallTask = {
         title: npmInstallTaskTitle,
-        task: (ctx, task) =>
-            execa('npm', npmCommandArgs).then(() => {
-                task.title = `${npmInstallTaskTitle} (${getWebpackVersion()})`;
-            }),
+        task: async (ctx, task) => {
+            await execa('npm', npmCommandArgs);
+            task.title = `${npmInstallTaskTitle} (${getWebpackVersion()})`;
+        },
     };
 
     const jestCommandArgs =
@@ -69,21 +69,23 @@ const webpackTestTasks = supported.map((version) => {
     if (ciEnabled === true) {
         const codecovTask = {
             title: 'codecov',
-            task: () =>
-                execa('codecov', [], {
+            task: async () => {
+                const { stdout } = await execa('codecov', [], {
                     env: { FORCE_COLOR: true },
-                }).then(({ stdout }) => {
-                    // eslint-disable-next-line no-console
-                    console.log(stdout);
-                }),
+                });
+
+                console.log(stdout);
+            },
         };
 
         testWebpackVersionTask.push(codecovTask);
     }
 
     return {
         title: `webpack@${version}`,
-        task: () => new Listr(testWebpackVersionTask),
+        task: () => {
+            return new Listr(testWebpackVersionTask);
+        },
         skip,
     };
 });
@@ -104,30 +106,32 @@ tasks
         const packageJsonWebpackVersion = readPkgUp.sync({
             cwd: process.cwd(),
             normalize: false,
-        }).package.devDependencies.webpack;
+        }).packageJson.devDependencies.webpack;
 
         return new Listr(
             [
                 {
                     title: `npm install --no-save webpack@${packageJsonWebpackVersion}`,
-                    task: () =>
-                        execa(
+                    task: () => {
+                        return execa(
                             'npm',
                             [
                                 'install',
                                 '--no-save',
                                 `webpack@${packageJsonWebpackVersion}`,
                             ],
                             { env: { FORCE_COLOR: true } },
-                        ),
-                    skip: () => ciEnabled === true,
+                        );
+                    },
+                    skip: () => {
+                        return ciEnabled === true;
+                    },
                 },
             ],
             listrOptions,
         ).run();
     })
     .catch((error) => {
-        // eslint-disable-next-line no-console
         console.error(error.message);
 
         // eslint-disable-next-line no-process-exit

package.json

@@ -46,38 +46,35 @@
     "prepublishOnly": "npm run build && npm run lint && npm run typescript && npm run test.all",
     "release": "np"
   },
-  "peerDependencies": {
-    "webpack": "*"
-  },
   "devDependencies": {
-    "@babel/cli": "^7.4.4",
-    "@babel/core": "^7.4.4",
-    "@babel/preset-env": "^7.4.4",
-    "@babel/preset-typescript": "^7.3.3",
-    "@chrisblossom/eslint-config": "^5.0.0",
-    "@types/jest": "^24.0.13",
-    "@types/node": "^12.0.2",
-    "@types/read-pkg-up": "^3.0.1",
-    "babel-jest": "^24.8.0",
-    "codecov": "^3.5.0",
-    "cross-env": "^5.2.0",
-    "del-cli": "^1.1.0",
+    "@babel/cli": "^7.6.4",
+    "@babel/core": "^7.6.4",
+    "@babel/preset-env": "^7.6.3",
+    "@babel/preset-typescript": "^7.6.0",
+    "@chrisblossom/eslint-config": "^6.1.5",
+    "@types/jest": "^24.0.19",
+    "@types/node": "^12.11.1",
+    "@types/webpack": "^4.39.3",
+    "babel-jest": "^24.9.0",
+    "codecov": "^3.6.1",
+    "cross-env": "^6.0.3",
+    "del-cli": "^3.0.0",
     "eslint": "^5.16.0",
-    "execa": "^1.0.0",
-    "husky": "^2.3.0",
-    "jest": "^24.8.0",
-    "lint-staged": "^8.1.7",
+    "execa": "^3.1.0",
+    "husky": "^3.0.9",
+    "jest": "^24.9.0",
+    "lint-staged": "^9.4.2",
     "listr": "^0.14.3",
-    "np": "^5.0.2",
-    "prettier": "^1.17.1",
-    "read-pkg-up": "^6.0.0",
-    "semver": "^6.0.0",
-    "temp-sandbox": "^3.0.0",
-    "typescript": "^3.4.5",
-    "webpack": "^4.32.0"
+    "np": "^5.1.1",
+    "prettier": "^1.18.2",
+    "read-pkg-up": "^7.0.0",
+    "semver": "^6.3.0",
+    "temp-sandbox": "^4.0.1",
+    "typescript": "^3.6.4",
+    "webpack": "^4.41.2"
   },
   "dependencies": {
-    "@types/webpack": "^4.4.31",
-    "del": "^4.1.1"
+    "del": "^5.1.0",
+    "slash": "^3.0.0"
   }
 }