feat: Add support for webpack 5

.eslintrc.json

@@ -14,7 +14,8 @@
     "global-require": "off",
     "class-methods-use-this": "off",
     "no-param-reassign": "off",
-    "no-underscore-dangle": "off"
+    "no-underscore-dangle": "off",
+    "no-undefined": "off"
   },
   "overrides": [
     { "files": "**/*.test.js", "parserOptions": { "sourceType": "module" } }

.gitignore

@@ -2,5 +2,5 @@
 coverage
 node_modules
 npm-debug.log
-tests/tmp
+tests/integration/tmp
 yarn-error.log

.travis.yml

@@ -5,8 +5,12 @@ node_js:
   - "10"
 cache:
   yarn: true
+before_script: 'if [[ "$WEBPACK" != "default" ]]; then yarn add --dev webpack@^${WEBPACK}; fi'
+script: yarn test
+env:
+  - WEBPACK=default
+  - WEBPACK=5.0.0-0
 matrix:
   include:
     - node_js: "lts/*"
       script: yarn lint
-script: yarn test

src/plugins/CachePluginFactory.js

@@ -1,33 +1,25 @@
 "use strict";
 
-const CachePlugin = require("webpack/lib/CachePlugin");
+let CachePlugin;
+try {
+  // webpack 4
+  CachePlugin = require("webpack/lib/CachePlugin");
+} catch (e) {
+  // webpack 5
+  // eslint-disable-next-line import/no-unresolved
+  CachePlugin = require("webpack/lib/cache/MemoryCachePlugin");
+}
 
 class CachePluginFactory {
   constructor() {
     this.plugins = {};
-    this.dependencies = {};
   }
 
   addPlugin(target, compiler) {
     if (!this.plugins[target]) {
       this.plugins[target] = new CachePlugin();
     }
     this.plugins[target].apply(compiler);
-    if (this.dependencies[target]) {
-      compiler._lastCompilationFileDependencies = this.dependencies[
-        target
-      ].file;
-      compiler._lastCompilationContextDependencies = this.dependencies[
-        target
-      ].context;
-    }
-  }
-
-  updateDependencies(target, compiler) {
-    this.dependencies[target] = {
-      file: compiler._lastCompilationFileDependencies,
-      context: compiler._lastCompilationContextDependencies,
-    };
   }
 }
 

tasks/webpack.js

@@ -65,9 +65,6 @@ module.exports = (grunt) => {
       }
 
       const handler = (err, stats) => {
-        if (opts.cache) {
-          cachePluginFactory.updateDependencies(target, compiler);
-        }
         if (err) {
           done(err);
           return;

tests/integration/fixtures/webpack/banner-plugin-webpack-4/Gruntfile.js

@@ -12,6 +12,7 @@ module.exports = function (grunt) {
     },
     webpack: {
       test: (config) =>({
+        mode: "none",
         entry: path.join(__dirname, "entry"),
         output: {
           path: __dirname,

tests/integration/fixtures/webpack/basic/Gruntfile.js

@@ -6,6 +6,7 @@ module.exports = function (grunt) {
   grunt.initConfig({
     webpack: {
       test: {
+        mode: "none",
         entry: path.join(__dirname, "entry"),
         output: {
           path: __dirname,

tests/integration/fixtures/webpack/cache/Gruntfile.js

@@ -6,6 +6,7 @@ module.exports = function (grunt) {
   grunt.initConfig({
     webpack: {
       test: {
+        mode: "none",
         cache: true,
         entry: path.join(__dirname, "entry"),
         output: {

tests/integration/fixtures/webpack/circular-reference-in-plugin-options/Gruntfile.js

@@ -1,6 +1,6 @@
-const path = require('path');
-const webpack = require('webpack');
-const loadGruntWebpackTasks = require('../../../../utils/loadGruntWebpackTasks');
+const path = require("path");
+const webpack = require("webpack");
+const loadGruntWebpackTasks = require("../../../../utils/loadGruntWebpackTasks");
 
 const plugin = new webpack.DefinePlugin({ test: JSON.stringify("test") });
 plugin.circle = plugin;
@@ -9,15 +9,14 @@ module.exports = function (grunt) {
   grunt.initConfig({
     webpack: {
       test: {
-          entry: path.join(__dirname, "entry"),
-          output: {
-            path: __dirname,
-            filename: "output.js",
-          },
-          plugins: [
-            plugin,
-          ]
-        }
+        mode: "none",
+        entry: path.join(__dirname, "entry"),
+        output: {
+          path: __dirname,
+          filename: "output.js",
+        },
+        plugins: [plugin],
+      },
     },
   });
 

tests/integration/fixtures/webpack/error-without-stats/Gruntfile.js

@@ -6,11 +6,15 @@ module.exports = function (grunt) {
   grunt.initConfig({
     webpack: {
       test: {
+        mode: "none",
         stats: false,
         entry: path.join(__dirname, "entry"),
         output: {
           path: __dirname,
           filename: "output.js",
+        },
+        stats:{
+          colors: false
         }
       },
     },

tests/integration/fixtures/webpack/error-without-stats/exec.js

@@ -1,4 +1,4 @@
 assertGrunt.failed();
 
 expect(stdout).toMatch(/Can't resolve '\.\/b'/);
-expect(stdout).toMatch(/@ \.\/entry\.js 1:8-22/);
+expect(stdout).toMatch(/\.\/entry\.js 1:8-22/);

tests/integration/fixtures/webpack/error/Gruntfile.js

@@ -6,10 +6,14 @@ module.exports = function (grunt) {
   grunt.initConfig({
     webpack: {
       test: {
+        mode: "none",
         entry: path.join(__dirname, "entry"),
         output: {
           path: __dirname,
           filename: "output.js",
+        },
+        stats:{
+          colors: false
         }
       },
     },

tests/integration/fixtures/webpack/error/exec.js

@@ -1,4 +1,4 @@
 assertGrunt.failed();
 
 expect(stdout).toMatch(/Can't resolve '\.\/b'/);
-expect(stdout).toMatch(/@ \.\/entry\.js 1:8-22/);
+expect(stdout).toMatch(/\.\/entry\.js 1:8-22/);

tests/integration/fixtures/webpack/loader-path/webpack.config.js

@@ -1,18 +1,18 @@
-const path = require('path');
+const path = require("path");
 
 const config = {
-    entry: {
-        'main': './main.js',
-    },
-    module: {
-        rules: [
-            {
-                test: /\.js/,
-                use: ['babel-loader'],
-            },
-        ]
-    },
+  mode: "none",
+  entry: {
+    main: "./main.js",
+  },
+  module: {
+    rules: [
+      {
+        test: /\.js/,
+        use: ["babel-loader"],
+      },
+    ],
+  },
 };
 
 module.exports = config;
-

tests/integration/fixtures/webpack/multi-compiler-verbose/Gruntfile.js

@@ -1,6 +1,6 @@
-const path = require('path');
-const webpack = require('webpack');
-const loadGruntWebpackTasks = require('../../../../utils/loadGruntWebpackTasks');
+const path = require("path");
+const webpack = require("webpack");
+const loadGruntWebpackTasks = require("../../../../utils/loadGruntWebpackTasks");
 
 module.exports = function (grunt) {
   grunt.initConfig({
@@ -12,21 +12,21 @@ module.exports = function (grunt) {
       },
       test: [
         {
+          mode: "none",
           entry: path.join(__dirname, "entry"),
           output: {
             path: __dirname,
             filename: "bundle.js",
           },
-          plugins: [
-            new webpack.BannerPlugin("this is a banner"),
-          ],
+          plugins: [new webpack.BannerPlugin("this is a banner")],
         },
         {
+          mode: "none",
           entry: path.join(__dirname, "entry2"),
           output: {
             path: __dirname,
             filename: "bundle2.js",
-          }
+          },
         },
       ],
     },

tests/integration/fixtures/webpack/multi-compiler/Gruntfile.js

@@ -1,6 +1,6 @@
-const path = require('path');
-const webpack = require('webpack');
-const loadGruntWebpackTasks = require('../../../../utils/loadGruntWebpackTasks');
+const path = require("path");
+const webpack = require("webpack");
+const loadGruntWebpackTasks = require("../../../../utils/loadGruntWebpackTasks");
 
 module.exports = function (grunt) {
   grunt.initConfig({
@@ -12,21 +12,21 @@ module.exports = function (grunt) {
       },
       test: [
         {
+          mode: "none",
           entry: path.join(__dirname, "entry"),
           output: {
             path: __dirname,
             filename: "bundle.js",
           },
-          plugins: [
-            new webpack.BannerPlugin("this is a banner"),
-          ],
+          plugins: [new webpack.BannerPlugin("this is a banner")],
         },
         {
+          mode: "none",
           entry: path.join(__dirname, "entry2"),
           output: {
             path: __dirname,
             filename: "bundle2.js",
-          }
+          },
         },
       ],
     },