feat: vite-node watch mode

examples/vite-node/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "vitest-test",
+  "private": true,
+  "main": "index.js",
+  "license": "MIT",
+  "type": "module",
+  "scripts": {
+    "start": "vite-node --watch ./src/*"
+  },
+  "devDependencies": {
+    "vite-node": "latest"
+  },
+  "stackblitz": {
+    "startCommand": "npm run start"
+  }
+}

examples/vite-node/src/index.js

@@ -0,0 +1,6 @@
+/* eslint-disable no-console */
+import { a } from './testModule'
+
+console.log('[index.js] load!')
+console.log('hello world')
+console.log(a)

examples/vite-node/src/testModule.js

@@ -0,0 +1,4 @@
+export const a = 'hello testModule'
+
+// eslint-disable-next-line no-console
+console.log('[testModule.js] load!')

examples/vite-node/vite.config.ts

@@ -0,0 +1,12 @@
+/// <reference types="vitest" />
+
+// Configure Vitest (https://vitest.dev/config)
+
+import { defineConfig } from 'vite'
+
+export default defineConfig({
+  test: {
+    /* for example, use global to avoid globals imports (describe, test, expect): */
+    // globals: true,
+  },
+})

packages/vite-node/src/cli.ts

@@ -61,11 +61,11 @@ export interface CliOptions {
   _?: string[]
   root?: string
   config?: string
+  watch?: boolean
 }
 
 async function run(options: CliOptions = {}) {
   const files = options.files || options._ || []
-
   const server = await createServer({
     logLevel: 'error',
     clearScreen: false,
@@ -93,5 +93,16 @@ async function run(options: CliOptions = {}) {
   for (const file of files)
     await runner.executeFile(file)
 
-  await server.close()
+  if (!options.watch)
+    await server.close()
+
+  server.watcher.on('all', async(eventName, path) => {
+    // eslint-disable-next-line no-console
+    console.log(dim(`[update] ${path}`))
+    // because module don't had `import.meta.hot.accept`
+    // only can refresh all module
+    runner.moduleCache.clear()
+    for (const file of files)
+      await runner.executeFile(file)
+  })
 }