webpack 4 -> 5 : several typescript issues

Bug report

webpack version: beta 15 Node.js version: 10.xxx Operating System: windows

1. ModuleOptions is not exported

2. ResolveOptions is not exported

fix: export them at the end of the file

3. EntryObject is wrong

type Entry =
	| string
	| (() => string | EntryObject | [string, string] | Promise<EntryStatic>)
	| EntryObject
	| [string, string];
declare interface EntryObject {
	[index: string]: string | [string, string] | EntryDescription;
}

but doc says here : https://webpack.js.org/configuration/entry-context/#dependencies

module.exports = {
  //...
  entry: {
    app: { import: './app.js', dependOn: 'react-vendors' },
    'react-vendors': ['react', 'react-dom', 'prop-types']
  }
};

which triggers a typescript error there should be some | string[] somewhere

4. no migration Guide

(bug found in some code I maintain) - ... extends CompilationHooks -> ... extends CompilationHooksJavascriptModulesPlugin - compilation.Chunk->Chunk - compilation.Compilation->Compilation - Module -> ModuleOptions - Resolve -> ResolveOptions

[ryanelian]

I’m happy that webpack 5 has its own generated types.

However I used these types from webpack (back when using @types/webpack 4), how to make this work with webpack 5 beta 15? All these types are now missing when installing the new package:

import webpack = require('webpack');

webpack.RuleSetRule

webpack.RuleSetLoader

webpack.Plugin

webpack.Output

webpack.Resolve

webpack.Options.Optimization

webpack.Stats.ToJsonOutput

webpack.loader.LoaderContext

[artem-malko]

@evilebottnawi

What is missing in master?

I’ve not found Loader type and LoaderContext. So, it’s quite difficult to write own loader with typescript using webpack beta 15 right now.