chore(cli): accept hooks (#6274)

packages/cli/package.json

@@ -21,6 +21,7 @@
     "execa": "^2.0.4",
     "exit": "^0.1.2",
     "fs-extra": "^8.1.0",
+    "hable": "^2.2.1",
     "minimist": "^1.2.0",
     "opener": "1.5.1",
     "pretty-bytes": "^5.3.0",

packages/cli/src/command.js

@@ -1,6 +1,7 @@
 
 import consola from 'consola'
 import minimist from 'minimist'
+import Hookable from 'hable'
 import { name, version } from '../package.json'
 import { forceExit } from './utils'
 import { loadNuxtConfig } from './utils/config'
@@ -8,8 +9,11 @@ import { indent, foldLines, colorize } from './utils/formatting'
 import { startSpaces, optionSpaces, forceExitTimeout } from './utils/constants'
 import * as imports from './imports'
 
-export default class NuxtCommand {
-  constructor (cmd = { name: '', usage: '', description: '' }, argv = process.argv.slice(2)) {
+export default class NuxtCommand extends Hookable {
+  constructor (cmd = { name: '', usage: '', description: '' }, argv = process.argv.slice(2), hooks = {}) {
+    super(consola)
+    this.addHooks(hooks)
+
     if (!cmd.options) {
       cmd.options = {}
     }
@@ -19,15 +23,15 @@ export default class NuxtCommand {
     this._parsedArgv = null // Lazy evaluate
   }
 
-  static run (cmd, argv) {
-    return NuxtCommand.from(cmd, argv).run()
+  static run (cmd, argv, hooks) {
+    return NuxtCommand.from(cmd, argv, hooks).run()
   }
 
-  static from (cmd, argv) {
+  static from (cmd, argv, hooks) {
     if (cmd instanceof NuxtCommand) {
       return cmd
     }
-    return new NuxtCommand(cmd, argv)
+    return new NuxtCommand(cmd, argv, hooks)
   }
 
   async run () {
@@ -100,6 +104,8 @@ export default class NuxtCommand {
       this.cmd.options[name].prepare && this.cmd.options[name].prepare(this, options, this.argv)
     }
 
+    await this.callHook('config', options)
+
     return options
   }
 

packages/cli/src/run.js

@@ -14,7 +14,7 @@ function packageExists (name) {
   }
 }
 
-export default async function run (_argv) {
+export default async function run (_argv, hooks = {}) {
   // Check for not installing both nuxt and nuxt-edge
   const dupPkg = '@nuxt/' + (pkgName === '@nuxt/cli-edge' ? 'cli' : 'cli-edge')
   if (packageExists(dupPkg)) {
@@ -33,12 +33,21 @@ export default async function run (_argv) {
     cmd = await getCommand('dev')
   }
 
+  // Check for dev
+  const dev = argv[0] === 'dev'
+
+  // Call setup hook
+  if (typeof hooks.setup === 'function') {
+    await hooks.setup({ cmd, dev, argv })
+    delete hooks.setup
+  }
+
   // Setup env
-  setup({ dev: argv[0] === 'dev' })
+  setup({ dev })
 
   // Try internal command
   if (cmd) {
-    return NuxtCommand.run(cmd, argv.slice(1))
+    return NuxtCommand.run(cmd, argv.slice(1), hooks)
   }
 
   // Try external command

packages/cli/test/unit/hooks.test.js

@@ -0,0 +1,23 @@
+import { NuxtCommand } from '../utils'
+
+describe('dev', () => {
+  let dev
+
+  beforeAll(async () => {
+    dev = await import('../../src/commands/dev').then(m => m.default)
+  })
+
+  afterEach(() => jest.clearAllMocks())
+
+  test('config hook', async () => {
+    const hooks = {
+      config: jest.fn()
+    }
+
+    await NuxtCommand.run(dev, [], hooks)
+
+    expect(hooks.config).toHaveBeenCalledWith(expect.objectContaining({
+      _cli: true
+    }))
+  })
+})

packages/cli/test/unit/run.test.js

@@ -20,19 +20,35 @@ describe('run', () => {
   test('nuxt aliases to nuxt dev', async () => {
     await run([])
     expect(getCommand).toHaveBeenCalledWith('dev')
-    expect(NuxtCommand.run).toHaveBeenCalledWith(expect.anything(), [])
+    expect(NuxtCommand.run).toHaveBeenCalledWith(expect.anything(), [], {})
   })
 
   test('nuxt --foo aliases to nuxt dev --foo', async () => {
     await run(['--foo'])
     expect(getCommand).toHaveBeenCalledWith('dev')
-    expect(NuxtCommand.run).toHaveBeenCalledWith(expect.anything(), ['--foo'])
+    expect(NuxtCommand.run).toHaveBeenCalledWith(expect.anything(), ['--foo'], {})
+  })
+
+  test('setup hook', async () => {
+    const setup = jest.fn()
+    await run(['--foo'], { setup })
+    expect(setup).toHaveBeenCalledWith(expect.objectContaining({
+      argv: ['dev', '--foo'],
+      dev: true
+    }))
+  })
+
+  test('all hooks passed to NuxtCommand', async () => {
+    const hooks = { foo: jest.fn() }
+    await run([], hooks)
+
+    expect(NuxtCommand.run).toHaveBeenCalledWith(expect.anything(), [], hooks)
   })
 
   test('nuxt <dir> aliases to nuxt dev <dir>', async () => {
     await run([__dirname])
     expect(getCommand).toHaveBeenCalledWith('dev')
-    expect(NuxtCommand.run).toHaveBeenCalledWith(expect.anything(), [__dirname])
+    expect(NuxtCommand.run).toHaveBeenCalledWith(expect.anything(), [__dirname], {})
   })
 
   test('external commands', async () => {