perf: migrate from yargs to cac

Author: antfu

package.json

@@ -102,6 +102,7 @@
     "@typescript-eslint/parser": "^8.24.1",
     "@vitest/eslint-plugin": "^1.1.31",
     "ansis": "^3.15.0",
+    "cac": "^6.7.14",
     "eslint-config-flat-gitignore": "^2.1.0",
     "eslint-flat-config-utils": "^2.0.1",
     "eslint-merge-processors": "^2.0.0",
@@ -126,8 +127,7 @@
     "parse-gitignore": "^2.0.0",
     "toml-eslint-parser": "^0.10.0",
     "vue-eslint-parser": "^9.4.3",
-    "yaml-eslint-parser": "^1.2.3",
-    "yargs": "^17.7.2"
+    "yaml-eslint-parser": "^1.2.3"
   },
   "devDependencies": {
     "@antfu/eslint-config": "workspace:*",
@@ -139,7 +139,6 @@
     "@types/fs-extra": "^11.0.4",
     "@types/node": "^22.13.4",
     "@types/prompts": "^2.4.9",
-    "@types/yargs": "^17.0.33",
     "@unocss/eslint-plugin": "^65.5.0",
     "astro-eslint-parser": "^1.2.1",
     "bumpp": "^10.0.3",

pnpm-lock.yaml

@@ -2,8 +2,7 @@ import process from 'node:process'
 
 import * as p from '@clack/prompts'
 import c from 'ansis'
-import yargs from 'yargs'
-import { hideBin } from 'yargs/helpers'
+import { cac } from 'cac'
 
 import { pkgJson } from './constants'
 import { run } from './run'
@@ -13,48 +12,25 @@ function header(): void {
   p.intro(`${c.green`@antfu/eslint-config `}${c.dim`v${pkgJson.version}`}`)
 }
 
-const instance = yargs(hideBin(process.argv))
-  .scriptName('@antfu/eslint-config')
-  .usage('')
-  .command(
-    '*',
-    'Run the initialization or migration',
-    args => args
-      .option('yes', {
-        alias: 'y',
-        description: 'Skip prompts and use default values',
-        type: 'boolean',
-      })
-      .option('template', {
-        alias: 't',
-        description: 'Use the framework template for optimal customization: vue / react / svelte / astro',
-        type: 'string',
-      })
-      .option('extra', {
-        alias: 'e',
-        array: true,
-        description: 'Use the extra utils: formatter / perfectionist / unocss',
-        type: 'string',
-      })
-      .help(),
-    async (args) => {
-      header()
-      try {
-        await run(args)
-      }
-      catch (error) {
-        p.log.error(c.inverse.red(' Failed to migrate '))
-        p.log.error(c.red`✘ ${String(error)}`)
-        process.exit(1)
-      }
-    },
-  )
-  .showHelpOnFail(false)
-  .alias('h', 'help')
-  .version('version', pkgJson.version)
-  .alias('v', 'version')
+const cli = cac('@antfu/eslint-config')
 
-// eslint-disable-next-line ts/no-unused-expressions
-instance
-  .help()
-  .argv
+cli
+  .command('', 'Run the initialization or migration')
+  .option('--yes, -y', 'Skip prompts and use default values', { default: false })
+  .option('--template, -t <template>', 'Use the framework template for optimal customization: vue / react / svelte / astro', { type: [] })
+  .option('--extra, -e <extra>', 'Use the extra utils: formatter / perfectionist / unocss', { type: [] })
+  .action(async (args) => {
+    header()
+    try {
+      await run(args)
+    }
+    catch (error) {
+      p.log.error(c.inverse.red(' Failed to migrate '))
+      p.log.error(c.red`✘ ${String(error)}`)
+      process.exit(1)
+    }
+  })
+
+cli.help()
+cli.version(pkgJson.version)
+cli.parse()

src/cli/index.ts

@@ -31,8 +31,8 @@ export interface CliRunOptions {
 
 export async function run(options: CliRunOptions = {}): Promise<void> {
   const argSkipPrompt = !!process.env.SKIP_PROMPT || options.yes
-  const argTemplate = <FrameworkOption[]>options.frameworks?.map(m => m.trim())
-  const argExtra = <ExtraLibrariesOption[]>options.extra?.map(m => m.trim())
+  const argTemplate = <FrameworkOption[]>options.frameworks?.map(m => m?.trim()).filter(Boolean)
+  const argExtra = <ExtraLibrariesOption[]>options.extra?.map(m => m?.trim()).filter(Boolean)
 
   if (fs.existsSync(path.join(process.cwd(), 'eslint.config.js'))) {
     p.log.warn(c.yellow`eslint.config.js already exists, migration wizard exited.`)