Deprecate Library Export Default Webpack Plugin for webpack 5

Author: gziolo

package-lock.json

@@ -31,7 +31,7 @@
 		"escape-string-regexp": "^1.0.5"
 	},
 	"peerDependencies": {
-		"webpack": "^4.0.0 || ^5.0.0"
+		"webpack": "^4.0.0"
 	},
 	"publishConfig": {
 		"access": "public"

packages/custom-templated-path-webpack-plugin/package.json

@@ -30,7 +30,7 @@
 	"types": "lib/types.d.ts",
 	"dependencies": {
 		"json2php": "^0.0.4",
-		"webpack-sources": "^2.2.0"
+		"webpack-sources": "^3.2.0"
 	},
 	"peerDependencies": {
 		"webpack": "^4.8.3 || ^5.0.0"

packages/dependency-extraction-webpack-plugin/package.json

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Deprecations
+
+-   This plugin is deprecated for webpack 5. Please use [`output.library.export`](https://webpack.js.org/configuration/output/#outputlibraryexport) instead ([#33818](ttps://github.com/WordPress/gutenberg/pull/33818)).
+
 ## 2.0.0 (2021-01-21)
 
 ### Breaking Changes

packages/library-export-default-webpack-plugin/CHANGELOG.md

@@ -1,5 +1,7 @@
 # Library Export Default Webpack Plugin
 
+> **DEPRECATED for webpack v5**: please use [`output.library.export`](https://webpack.js.org/configuration/output/#outputlibraryexport) instead.
+
 Webpack plugin for exporting `default` property for selected libraries which use ES6 Modules. Implementation is based on the Webpack's core plugin [ExportPropertyMainTemplatePlugin](https://github.com/webpack/webpack/blob/51b0df77e4f366163730ee465f01458bfad81f34/lib/ExportPropertyMainTemplatePlugin.js). The only difference is that this plugin allows to include all entry point names where the default export of your entry point will be assigned to the library target.
 
 ## Installation
@@ -10,7 +12,7 @@ Install the module
 npm install @wordpress/library-export-default-webpack-plugin --save
 ```
 
-**Note**: This package requires Node.js 12.0.0 or later. It also requires webpack 4.0 and newer. It is not compatible with older versions.
+**Note**: This package requires Node.js 12.0.0 or later. It is not compatible with older versions. It works only with webpack v4.
 
 ## Usage
 

packages/library-export-default-webpack-plugin/README.md

@@ -30,10 +30,10 @@
 	"main": "index.js",
 	"dependencies": {
 		"lodash": "^4.17.21",
-		"webpack-sources": "^2.2.0"
+		"webpack-sources": "^3.2.0"
 	},
 	"peerDependencies": {
-		"webpack": "^4.0.0 || ^5.0.0"
+		"webpack": "^4.0.0"
 	},
 	"publishConfig": {
 		"access": "public"