Improve types of the tailwindcss/plugin (#8400)

* improve types of the `tailwindcss/plugin`

This also exposes/types the `plugin.withOptions` as described here: https://tailwindcss.com/docs/plugins#exposing-options

* update changelog

Author: RobinMalfait

CHANGELOG.md

@@ -24,6 +24,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Error when registering an invalid custom variant ([#8345](https://github.com/tailwindlabs/tailwindcss/pull/8345))
 - Create tailwind.config.cjs file in ESM package when running init ([#8363](https://github.com/tailwindlabs/tailwindcss/pull/8363))
 - Fix `matchVariants` that use at-rules and placeholders ([#8392](https://github.com/tailwindlabs/tailwindcss/pull/8392))
+- Improve types of the `tailwindcss/plugin` ([#8400](https://github.com/tailwindlabs/tailwindcss/pull/8400))
 
 ### Changed
 

plugin.d.ts

@@ -1,6 +1,11 @@
 import type { Config, PluginCreator } from './types/config'
-declare function createPlugin(
-  plugin: PluginCreator,
-  config?: Config
-): { handler: PluginCreator; config?: Config }
-export = createPlugin
+type Plugin = {
+  withOptions<T>(
+    plugin: (options: T) => PluginCreator,
+    config?: (options: T) => Config
+  ): { (options: T): { handler: PluginCreator; config?: Config }; __isOptionsFunction: true }
+  (plugin: PluginCreator, config?: Config): { handler: PluginCreator; config?: Config }
+}
+
+declare const plugin: Plugin
+export = plugin

types/config.d.ts

@@ -297,7 +297,11 @@ export interface PluginAPI {
   e: (className: string) => string
 }
 export type PluginCreator = (api: PluginAPI) => void
-export type PluginsConfig = (PluginCreator | { handler: PluginCreator; config?: Config })[]
+export type PluginsConfig = (
+  | PluginCreator
+  | { handler: PluginCreator; config?: Config }
+  | { (options: any): { handler: PluginCreator; config?: Config }; __isOptionsFunction: true }
+)[]
 
 // Top level config related
 interface RequiredConfig {