support webpack5 (#35)

Author: justjavac

package.json

@@ -33,7 +33,7 @@
     "src"
   ],
   "peerDependencies": {
-    "webpack": "^4.0.0"
+    "webpack": ">=4.0.0"
   },
   "dependencies": {
     "loader-utils": "^2.0.0",
@@ -48,7 +48,8 @@
     "memory-fs": "^0.5.0",
     "prettier": "^2.1.1",
     "rimraf": "^3.0.2",
-    "webpack": "^4.44.1"
+    "webpack4": "npm:webpack@4",
+    "webpack5": "npm:webpack@5"
   },
   "keywords": [
     "webpack",

test/helpers/compiler.js

@@ -1,7 +1,7 @@
 const path = require('path')
 
 const rimraf = require('rimraf')
-const webpack = require('webpack')
+const webpack = require('webpack4')
 const MemoryFS = require('memory-fs')
 
 const modules = (config) => {
@@ -39,7 +39,7 @@ const output = (config) => {
 module.exports = function (fixture, config, options) {
   config = {
     mode: 'development',
-    devtool: config.devtool || 'sourcemap',
+    devtool: config.devtool || 'source-map',
     context: path.resolve(__dirname, '..', 'fixtures'),
     entry: `./${fixture}`,
     output: output(config),