fix(cli): restart issues (#299)

packages/cli/src/commands/dev.ts

@@ -4,57 +4,42 @@ import debounce from 'debounce-promise'
 import { createServer, createLoadingHandler } from '../utils/server'
 import { showBanner } from '../utils/banner'
 import { requireModule } from '../utils/cjs'
-import { error, info } from '../utils/log'
-import { diff, printDiff } from '../utils/diff'
+import { error } from '../utils/log'
 
 export async function invoke (args) {
   process.env.NODE_ENV = process.env.NODE_ENV || 'development'
   const server = createServer()
-  const listener = await server.listen({ clipboard: args.clipboard, open: args.open || args.o })
+  const listener = await server.listen({
+    clipboard: args.clipboard,
+    open: args.open || args.o
+  })
 
   const rootDir = resolve(args._[0] || '.')
 
   const { loadNuxt, buildNuxt } = requireModule('@nuxt/kit', rootDir)
 
   let currentNuxt
-  const load = async () => {
+  const load = async (isRestart) => {
     try {
-      showBanner(true)
-      listener.showURL()
-
-      const newNuxt = await loadNuxt({ rootDir, dev: true, ready: false })
-
-      if (process.env.DEBUG) {
-        let configChanges
+      const message = `${isRestart ? 'Restarting' : 'Starting'} nuxt...`
+      server.setApp(createLoadingHandler(message, 1))
+      if (isRestart) {
+        console.log(message)
+      }
       if (currentNuxt) {
-          configChanges = diff(currentNuxt.options, newNuxt.options, [
-            'generate.staticAssets.version',
-            'env.NITRO_PRESET'
-          ])
-          server.setApp(createLoadingHandler('Restarting...', 1))
         await currentNuxt.close()
+      }
+      const newNuxt = await loadNuxt({ rootDir, dev: true, ready: false })
       currentNuxt = newNuxt
-        } else {
-          currentNuxt = newNuxt
-        }
-
-        if (configChanges) {
-          if (configChanges.length) {
-            info('Nuxt config updated:')
-            printDiff(configChanges)
-          } else {
-            info('Restarted nuxt due to config changes')
-          }
-        }
-      } else {
-        currentNuxt = newNuxt
-      }
-
       await currentNuxt.ready()
       await buildNuxt(currentNuxt)
       server.setApp(currentNuxt.server.app)
+      if (isRestart && args.clear !== false) {
+        showBanner()
+        listener.showURL()
+      }
     } catch (err) {
-      error('Cannot load nuxt.', err)
+      error(`Cannot ${isRestart ? 'restart' : 'start'} nuxt: `, err)
       server.setApp(createLoadingHandler(
         'Error while loading nuxt. Please check console and fix errors.'
       ))
@@ -67,11 +52,11 @@ export async function invoke (args) {
   const watcher = chokidar.watch([rootDir], { ignoreInitial: true, depth: 1 })
   watcher.on('all', (_event, file) => {
     if (file.includes('nuxt.config') || file.includes('modules')) {
-      dLoad()
+      dLoad(true)
     }
   })
 
-  await load()
+  await load(false)
 }
 
 export const meta = {

packages/cli/src/index.ts

@@ -8,11 +8,15 @@ import { error } from './utils/log'
 
 async function _main () {
   const _argv = process.argv.slice(2)
-  const args = mri(_argv)
+  const args = mri(_argv, {
+    boolean: [
+      'no-clear'
+    ]
+  })
   // @ts-ignore
   let command = args._.shift() || 'usage'
 
-  showBanner(command === 'dev')
+  showBanner(command === 'dev' && args.clear !== false)
 
   if (!(command in commands)) {
     console.log('\n' + red('Invalid command ' + command))

packages/cli/src/utils/banner.ts

@@ -2,7 +2,7 @@ import clear from 'clear'
 import { green } from 'colorette'
 import { version } from '../../package.json'
 
-export function showBanner (_clear: boolean) {
+export function showBanner (_clear?: boolean) {
   if (_clear) { clear() }
   console.log(green(`Nuxt CLI v${version}`))
 }