feat: rolldown cli first implementation

.ls-lint.yml

@@ -9,10 +9,10 @@ ignore:
  - temp
  - rollup # rollup submodule
  - '**/dist'
+ - '**/*.config.{js,mjs,cjs,ts,cts,mts}'
+ - '**/*.test.{js,mjs,cjs,ts,cts,mts}'
  - packages/rollup-tests/test # Copied from rollup repo
  - 'crates/rolldown/tests/fixtures/**/_test.js' # `_test.js` is a special file, which will be treat as the entry file while executing the build output of fixture.
- - packages/rolldown/build.config.ts # convention name for using unbuild
- - packages/rolldown/vitest.config.ts
  - web/docs/.vitepress/cache # cache files generated by vitepress
  # FIXME: should not ignore following folders
  - web

cspell.json

@@ -99,6 +99,8 @@
  "tinybench",
  "transpiling",
  "treeshake",
+ "consola",
+ "citty",
  "underfin",
  "UNKEYED",
  "vite",

examples/basic-vue/build.js → examples/basic-vue/rolldown.config.js

@@ -1,9 +1,6 @@
-import { performance } from 'node:perf_hooks'
-import * as rolldown from 'rolldown'
+import { defineConfig } from 'rolldown'
 
-const start = performance.now()
-
-const build = await rolldown.rolldown({
+export default defineConfig({
  input: './index.js',
  resolve: {
  // This needs to be explicitly set for now because oxc resolver doesn't
@@ -12,7 +9,3 @@ const build = await rolldown.rolldown({
  conditionNames: ['import'],
  },
 })
-
-await build.write()
-
-console.log(`bundled in ${(performance.now() - start).toFixed(2)}ms`)

packages/rolldown/bin/cli.js

@@ -0,0 +1,2 @@
+#!/usr/bin/env node
+import('../dist/cli.mjs')

packages/rolldown/build.config.ts

@@ -5,13 +5,21 @@ import nodePath from 'node:path'
 import { globSync } from 'glob'
 
 export default defineBuildConfig({
- entries: ['./src/index'],
+ entries: [
+ './src/index',
+ {
+ builder: 'rollup',
+ input: './src/cli/index',
+ name: 'cli',
+ },
+ ],
  clean: true,
  declaration: true, // generate .d.ts files
  externals: [/rolldown-binding\..*\.node/, /@rolldown\/binding-.*/],
  rollup: {
  emitCJS: true,
  cjsBridge: true,
+ inlineDependencies: true,
  },
  hooks: {
  'build:done'(_ctx) {
@@ -25,8 +33,8 @@ export default defineBuildConfig({
  // Move the binary file to dist
  binaryFiles.forEach((file) => {
  const fileName = nodePath.basename(file)
- console.log('Copying', file, 'to ./dist')
- nodeFs.copyFileSync(file, `./dist/${fileName}`)
+ console.log('Copying', file, 'to ./dist/shared')
+ nodeFs.copyFileSync(file, `./dist/shared/${fileName}`)
  })
  },
  },

packages/rolldown/package.json

@@ -13,9 +13,14 @@
  "rolldown"
  ],
  "files": [
+ "bin",
+ "cli",
  "dist",
  "!dist/*.node"
  ],
+ "bin": {
+ "rolldown": "./bin/cli.js"
+ },
  "main": "./dist/index.cjs",
  "types": "./dist/index.d.ts",
  "exports": {
@@ -63,7 +68,9 @@
  },
  "devDependencies": {
  "@napi-rs/cli": "^3.0.0-alpha.43",
+ "citty": "^0.1.6",
  "colorette": "^2.0.20",
+ "consola": "^3.2.3",
  "glob": "^10.3.10",
  "rollup": "^4.12.1",
  "type-fest": "^4.12.0",

packages/rolldown/src/cli/commands/bundle.ts

@@ -0,0 +1,26 @@
+import { performance } from 'node:perf_hooks'
+import consola from 'consola'
+import { colors } from 'consola/utils'
+import { RolldownOptions, rolldown } from '../../index'
+import { RolldownConfigExport } from '../../types/rolldown-config-export'
+import { arraify } from '../../utils'
+
+export async function bundle(configExport: RolldownConfigExport) {
+ const options = arraify(configExport)
+
+ for (const option of options) {
+ await bundleInner(option)
+ }
+}
+
+async function bundleInner(options: RolldownOptions) {
+ const start = performance.now()
+
+ const build = await rolldown(options)
+
+ const _output = await build.write(options?.output)
+
+ consola.log(
+ `Finished in ${colors.bold((performance.now() - start).toFixed(2))} ms`,
+ )
+}

packages/rolldown/src/cli/errors.ts

@@ -0,0 +1,2 @@
+export const ERR_UNSUPPORTED_CONFIG_FORMAT =
+ "Unsupported config format. please use '.js', '.mjs' and '.ts' format"

packages/rolldown/src/cli/index.ts

@@ -0,0 +1,52 @@
+import { defineCommand, runMain, showUsage } from 'citty'
+import consola from 'consola'
+import process from 'node:process'
+import path from 'node:path'
+import pkgJson from '../../package.json' assert { type: 'json' }
+import { loadConfig } from './utils.js'
+import { bundle } from './commands/bundle'
+
+const main = defineCommand({
+ meta: {
+ name: 'rolldown',
+ version: pkgJson.version,
+ description: pkgJson.description,
+ },
+ args: {
+ config: {
+ type: 'string',
+ alias: 'c',
+ description:
+ 'Use this config file (if argument is used but value is unspecified, defaults to rolldown.config.js)',
+ },
+ help: {
+ type: 'boolean',
+ alias: 'h',
+ description: 'Show this help message',
+ },
+ },
+ async run(ctx) {
+ if (ctx.args.help) {
+ await showUsage(ctx.cmd)
+ return
+ }
+ const cwd = process.cwd()
+ let configPath
+ if (ctx.args.config) {
+ configPath = path.resolve(cwd, ctx.args.config)
+ } else {
+ configPath = path.resolve(cwd, 'rolldown.config.js')
+ }
+
+ const config = await loadConfig(configPath)
+
+ if (!config) {
+ consola.error(`No configuration found at ${configPath}`)
+ process.exit(1)
+ }
+
+ await bundle(config)
+ },
+})
+
+runMain(main)

packages/rolldown/src/cli/utils.ts

@@ -0,0 +1,27 @@
+import path from 'node:path'
+import { ERR_UNSUPPORTED_CONFIG_FORMAT } from './errors.js'
+import { RolldownConfigExport } from '../types/rolldown-config-export.js'
+
+/**
+ * @typedef {import('../rollup').RollupOptions} RollupOptions
+ */
+
+/**
+ * Load a rolldown configuration file
+ */
+export async function loadConfig(
+ configPath: string,
+): Promise<RolldownConfigExport | undefined> {
+ if (!isSupportedFormat(configPath)) {
+ throw new Error(ERR_UNSUPPORTED_CONFIG_FORMAT)
+ }
+ return import(configPath).then((config) => config.default)
+}
+
+/**
+ * Check whether the configuration file is supported
+ */
+function isSupportedFormat(configPath: string): boolean {
+ const ext = path.extname(configPath)
+ return /\.(js|mjs)$/.test(ext)
+}

packages/rolldown/src/index.ts

@@ -1,19 +1,19 @@
 import { RolldownOutput } from './objects/rolldown-output'
 import type { InputOptions, RolldownPlugin } from './options/input-options'
 import type { OutputOptions } from './options/output-options'
+import type { RolldownOptions } from './types/rolldown-options'
+import { defineConfig } from './utils/define-config'
 
 export { rolldown, experimental_scan } from './rolldown'
 
-interface RollupOptions extends InputOptions {
- // This is included for compatibility with config files but ignored by rollup.rollup
- output?: OutputOptions | OutputOptions[]
-}
+export { defineConfig }
 
-// export types from rolldown
 export type {
- RollupOptions,
+ RolldownOptions,
+ RolldownOptions as RollupOptions,
+ RolldownOutput,
+ RolldownOutput as RollupOutput,
  InputOptions,
  OutputOptions,
  RolldownPlugin as Plugin,
- RolldownOutput as RollupOutput,
 }

packages/rolldown/src/rolldown-build.ts

@@ -10,6 +10,7 @@ export class RolldownBuild {
  #bundler?: Bundler
 
  constructor(inputOptions: InputOptions) {
+ // TODO: Check if `inputOptions.output` is set. If so, throw an warning that it is ignored.
  this.#inputOptions = inputOptions
  }
 

packages/rolldown/src/types/rolldown-config-export.ts

@@ -0,0 +1,3 @@
+import { RolldownOptions } from './rolldown-options'
+
+export type RolldownConfigExport = RolldownOptions | RolldownOptions[]

packages/rolldown/src/types/rolldown-options.ts

@@ -0,0 +1,7 @@
+import { InputOptions } from '../options/input-options'
+import { OutputOptions } from '../options/output-options'
+
+export interface RolldownOptions extends InputOptions {
+ // This is included for compatibility with config files but ignored by `rolldown.rolldown`
+ output?: OutputOptions
+}

packages/rolldown/src/utils/define-config.ts

@@ -0,0 +1,7 @@
+import { RolldownConfigExport } from '../types/rolldown-config-export'
+
+export function defineConfig(
+ config: RolldownConfigExport,
+): RolldownConfigExport {
+ return config
+}

packages/rolldown/test/cli/config.test.ts

@@ -0,0 +1,47 @@
+import { describe, test, assert } from 'vitest'
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+import { loadConfig } from '../../src/cli/utils'
+import { ERR_UNSUPPORTED_CONFIG_FORMAT } from '../../src/cli/errors'
+import { expect } from 'vitest'
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url))
+
+describe('loadConfig', () => {
+ const RE_ERR = RegExp(ERR_UNSUPPORTED_CONFIG_FORMAT)
+
+ test('js', async () => {
+ const config = await loadConfig(
+ path.resolve(__dirname, 'fixtures/rolldown.config.js'),
+ )
+ assert.deepEqual(config, { input: 'src/index.js' })
+ })
+
+ test('mjs', async () => {
+ const config = await loadConfig(
+ path.resolve(__dirname, 'fixtures/rolldown.config.mjs'),
+ )
+ assert.deepEqual(config, [
+ { input: 'src/app1/index.js' },
+ { input: 'src/app2/index.js' },
+ ])
+ })
+
+ test('cjs', async () => {
+ await expect(
+ loadConfig(path.resolve(__dirname, 'fixtures/rolldown.config.cjs')),
+ ).rejects.toThrowError(RE_ERR)
+ })
+
+ test('other format', async () => {
+ await expect(
+ loadConfig(path.resolve(__dirname, 'fixtures/rolldown.config.json')),
+ ).rejects.toThrowError(RE_ERR)
+ })
+
+ test('not found file', async () => {
+ await expect(
+ loadConfig(path.join(__dirname, 'fixtures/rollup.config.js')),
+ ).rejects.toThrowError(Error)
+ })
+})

packages/rolldown/test/cli/fixtures/basic/rolldown.config.js

@@ -0,0 +1,24 @@
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url))
+
+export default {
+ // input: 'src/index.js',
+ input: path.resolve(__dirname, 'src/index.js'),
+ output: [
+ {
+ // dir: 'build',
+ // file: 'build/bundle.js',
+ dir: path.resolve(__dirname, 'build'),
+ file: path.resolve(__dirname, 'build/bundle.js'),
+ },
+ ],
+ resolve: {
+ conditionNames: ['import'],
+ alias: {
+ // modules: 'src/modules',
+ modules: path.resolve(__dirname, 'src/modules'),
+ },
+ },
+}

packages/rolldown/test/cli/fixtures/basic/src/calc.js

@@ -0,0 +1,7 @@
+export function add(a, b) {
+ return a + b
+}
+
+export function sub(a, b) {
+ return a - b
+}

packages/rolldown/test/cli/fixtures/basic/src/index.js

@@ -0,0 +1,7 @@
+import { add, sub } from './calc'
+import { say } from 'modules/say'
+
+console.log(add(1, 2)) // 3
+console.log(sub(1, 2)) // -1
+
+say('hello world!')

packages/rolldown/test/cli/fixtures/basic/src/modules/say.js

@@ -0,0 +1,3 @@
+export function say(msg) {
+ console.log(msg)
+}

packages/rolldown/test/cli/fixtures/rolldown.config.cjs

@@ -0,0 +1,3 @@
+module.exports = {
+ input: 'src/index.js',
+}

packages/rolldown/test/cli/fixtures/rolldown.config.js

@@ -0,0 +1,3 @@
+export default {
+ input: 'src/index.js',
+}

packages/rolldown/test/cli/fixtures/rolldown.config.json

@@ -0,0 +1,3 @@
+{
+ "input": "src/index.js"
+}

packages/rolldown/test/cli/fixtures/rolldown.config.mjs

@@ -0,0 +1,8 @@
+export default [
+ {
+ input: 'src/app1/index.js',
+ },
+ {
+ input: 'src/app2/index.js',
+ },
+]

packages/rolldown/test/cli/fixtures/rolldown.config.ts

@@ -0,0 +1,11 @@
+import { transform } from './transform'
+
+export default {
+ input: 'src/index.ts',
+ plugins: [
+ {
+ name: 'test-plugin',
+ transform,
+ },
+ ],
+}