feat!: BREAKING CHANGE → drop webpack v4 support (#289)

* Support webpack@5 typings

BREAKING CHANGES: removed webpack@4 support

* chore: revert package version, this bump is done at release

Co-authored-by: Andrew Powell <shellscape@users.noreply.github.com>

README.md

@@ -24,7 +24,7 @@ A Webpack plugin for generating an asset manifest.
 
 `webpack-manifest-plugin` is an [evergreen 🌲](./.github/FAQ.md#what-does-evergreen-mean) module.
 
-This module requires an [Active LTS](https://github.com/nodejs/Release) Node version (v10.0.0+) and Webpack v4.44.0+.
+This module requires an [Active LTS](https://github.com/nodejs/Release) Node version (v12.0.0+) and Webpack v5.0.0.
 
 ## Contributing
 

package.json

@@ -19,24 +19,20 @@
     "lint": "pnpm lint:docs && pnpm lint:json && pnpm lint:js",
     "lint-staged": "lint-staged",
     "lint:docs": "prettier --write README.md",
-    "lint:js": "eslint --cache --fix --cache scripts src test",
+    "lint:js": "eslint --cache --fix --cache src test",
     "lint:json": "prettier --write codecov.yml package.json",
-    "posttest": "pnpm switch -- \"4\" && pnpm install",
     "prepublishOnly": "pnpm lint && pnpm build",
     "pretest": "pnpm build",
     "security": "pnpm audit --audit-level=high --prod",
-    "switch": "cd scripts && ts-node --project ./tsconfig.json ./set-webpack-version.ts",
-    "test": "pnpm test:v4 && pnpm test:v5",
-    "test:v4": "ava",
-    "test:v5": "pnpm switch -- \"5\" && pnpm install && ava"
+    "test": "pnpm install && ava"
   },
   "files": [
     "dist",
     "README.md",
     "LICENSE"
   ],
   "peerDependencies": {
-    "webpack": "^4.44.2 || ^5.47.0"
+    "webpack": "^5.47.0"
   },
   "dependencies": {
     "tapable": "^2.0.0",
@@ -48,17 +44,15 @@
     "@commitlint/config-conventional": "^13.1.0",
     "@svgr/webpack": "^5.4.0",
     "@types/node": "^16.4.3",
-    "@types/webpack": "^4.41.26",
+    "@types/webpack": "^5.28.0",
     "@types/webpack-sources": "^2.1.1",
     "@wordpress/dependency-extraction-webpack-plugin": "^3.1.0",
     "ava": "^3.13.0",
     "codecov": "^3.1.0",
     "copy-webpack-plugin": "^6.2.1",
-    "css-loader": "^1.0.0",
     "del": "^6.0.0",
     "eslint-config-shellscape": "^4.2.0",
-    "extract-text-webpack-plugin": "^3.0.2",
-    "file-loader": "^2.0.0",
+    "file-loader": "^6.2.0",
     "husky": "4.3.8",
     "lint-staged": "11.1.1",
     "memory-fs": "^0.4.1",
@@ -71,7 +65,7 @@
     "ts-node": "^10.1.0",
     "tslib": "^2.3.0",
     "typescript": "^4.3.5",
-    "webpack": "^4.44.2",
+    "webpack": "^5.47.0",
     "webpack-merge": "^5.2.0"
   },
   "ava": {
@@ -107,15 +101,5 @@
       "test/"
     ]
   },
-  "pre-commit": "lint-staged",
-  "webpack-versions": {
-    "4": {
-      "webpack": "^4.44.2",
-      "@types/webpack": "^4.41.26"
-    },
-    "5": {
-      "webpack": "latest",
-      "@types/webpack": "latest"
-    }
-  }
+  "pre-commit": "lint-staged"
 }