feat: add rolldown support

package.json

@@ -48,6 +48,7 @@
     "@ampproject/remapping": "^2.3.0",
     "@antfu/eslint-config": "^2.8.0",
     "@antfu/ni": "^0.21.12",
+    "@rolldown/node": "^0.0.5",
     "@rspack/cli": "^0.5.6",
     "@rspack/core": "^0.5.6",
     "@types/fs-extra": "^11.0.4",

src/define.ts

@@ -1,4 +1,5 @@
 import { getEsbuildPlugin } from './esbuild'
+import { getRolldownPlugin } from './rolldown'
 import { getRollupPlugin } from './rollup'
 import { getRspackPlugin } from './rspack'
 import type { UnpluginFactory, UnpluginInstance } from './types'
@@ -18,6 +19,9 @@ export function createUnplugin<UserOptions, Nested extends boolean = boolean>(
     get vite() {
       return getVitePlugin(factory)
     },
+    get rolldown() {
+      return getRolldownPlugin(factory)
+    },
     get webpack() {
       return getWebpackPlugin(factory)
     },
@@ -49,6 +53,12 @@ export function createVitePlugin<UserOptions, Nested extends boolean = boolean>(
   return getVitePlugin(factory)
 }
 
+export function createRolldownPlugin<UserOptions, Nested extends boolean = boolean>(
+  factory: UnpluginFactory<UserOptions, Nested>,
+) {
+  return getRolldownPlugin(factory)
+}
+
 export function createWebpackPlugin<UserOptions, Nested extends boolean = boolean>(
   factory: UnpluginFactory<UserOptions, Nested>,
 ) {

src/rolldown/index.ts

@@ -0,0 +1,24 @@
+import { toRollupPlugin } from '../rollup'
+import type { RolldownPlugin, UnpluginContextMeta, UnpluginFactory, UnpluginInstance } from '../types'
+import { toArray } from '../utils'
+
+export function getRolldownPlugin<UserOptions = Record<string, never>, Nested extends boolean = boolean>(
+  factory: UnpluginFactory<UserOptions, Nested>,
+) {
+  return ((userOptions?: UserOptions) => {
+    const meta: UnpluginContextMeta = {
+      framework: 'rolldown',
+    }
+    const rawPlugins = toArray(factory(userOptions!, meta))
+
+    const plugins = rawPlugins.map((rawPlugin) => {
+      const plugin = toRollupPlugin(rawPlugin, false) as RolldownPlugin
+      if (rawPlugin.rolldown)
+        Object.assign(plugin, rawPlugin.rolldown)
+
+      return plugin
+    })
+
+    return plugins.length === 1 ? plugins[0] : plugins
+  }) as UnpluginInstance<UserOptions, Nested>['rolldown']
+}

src/types.ts

@@ -1,6 +1,7 @@
 import type { AstNode, EmittedAsset, PluginContextMeta as RollupContextMeta, Plugin as RollupPlugin, SourceMapInput } from 'rollup'
 import type { Compiler as WebpackCompiler, WebpackPluginInstance } from 'webpack'
 import type { Plugin as VitePlugin } from 'vite'
+import type { Plugin as RolldownPlugin } from '@rolldown/node'
 import type { BuildOptions, Plugin as EsbuildPlugin, Loader } from 'esbuild'
 import type { Compiler as RspackCompiler, RspackPluginInstance } from '@rspack/core'
 import type VirtualModulesPlugin from 'webpack-virtual-modules'
@@ -9,6 +10,7 @@ import type { EsbuildPluginBuild } from './esbuild'
 export {
   EsbuildPlugin,
   RollupPlugin,
+  RolldownPlugin,
   VitePlugin,
   WebpackPluginInstance,
   RspackPluginInstance,
@@ -71,6 +73,7 @@ export interface UnpluginOptions {
   webpack?: (compiler: WebpackCompiler) => void
   rspack?: (compiler: RspackCompiler) => void
   vite?: Partial<VitePlugin>
+  rolldown?: Partial<RolldownPlugin>
   esbuild?: {
     // using regexp in esbuild improves performance
     onResolveFilter?: RegExp
@@ -99,14 +102,15 @@ export type UnpluginFactoryOutput<UserOptions, Return> = undefined extends UserO
 export interface UnpluginInstance<UserOptions, Nested extends boolean = boolean> {
   rollup: UnpluginFactoryOutput<UserOptions, Nested extends true ? Array<RollupPlugin> : RollupPlugin>
   vite: UnpluginFactoryOutput<UserOptions, Nested extends true ? Array<VitePlugin> : VitePlugin>
+  rolldown: UnpluginFactoryOutput<UserOptions, Nested extends true ? Array<RolldownPlugin> : RolldownPlugin>
   webpack: UnpluginFactoryOutput<UserOptions, WebpackPluginInstance>
   rspack: UnpluginFactoryOutput<UserOptions, RspackPluginInstance>
   esbuild: UnpluginFactoryOutput<UserOptions, EsbuildPlugin>
   raw: UnpluginFactory<UserOptions, Nested>
 }
 
 export type UnpluginContextMeta = Partial<RollupContextMeta> & ({
-  framework: 'rollup' | 'vite'
+  framework: 'rollup' | 'vite' | 'rolldown'
 } | {
   framework: 'webpack'
   webpack: {