/vue-debug-guides

Use import.meta.glob for Dynamic Component Registration in Vite

Impact: MEDIUM - When migrating from Webpack to Vite or starting a new Vite project, the require.context pattern for dynamically registering components won't work. Vite uses import.meta.glob instead. Using the wrong approach will cause build errors or runtime failures.

Task Checklist

• Replace require.context with import.meta.glob in Vite projects
• Update component registration patterns when migrating from Vue CLI to Vite
• Use { eager: true } for synchronous loading when needed
• Handle async components appropriately with defineAsyncComponent

Incorrect (Webpack pattern - doesn't work in Vite):

// main.js - WRONG for Vite
import { createApp } from 'vue'
import App from './App.vue'

const app = createApp(App)

// This Webpack-specific API doesn't exist in Vite
const requireComponent = require.context(
  './components/base',
  false,
  /Base[A-Z]\w+\.vue$/
)

requireComponent.keys().forEach(fileName => {
  const componentConfig = requireComponent(fileName)
  const componentName = fileName
    .split('/')
    .pop()
    .replace(/\.\w+$/, '')

  app.component(componentName, componentConfig.default || componentConfig)
})

app.mount('#app')

Correct (Vite pattern):

// main.js - Correct for Vite
import { createApp } from 'vue'
import App from './App.vue'

const app = createApp(App)

// Vite's glob import - eager loading for synchronous registration
const modules = import.meta.glob('./components/base/Base*.vue', { eager: true })

for (const path in modules) {
  // Extract component name from path: './components/base/BaseButton.vue' -> 'BaseButton'
  const componentName = path.split('/').pop().replace('.vue', '')
  app.component(componentName, modules[path].default)
}

app.mount('#app')

Lazy Loading with Async Components

// main.js - Lazy loading variant
import { createApp, defineAsyncComponent } from 'vue'
import App from './App.vue'

const app = createApp(App)

// Without { eager: true }, returns functions that return Promises
const modules = import.meta.glob('./components/base/Base*.vue')

for (const path in modules) {
  const componentName = path.split('/').pop().replace('.vue', '')
  // Wrap in defineAsyncComponent for lazy loading
  app.component(componentName, defineAsyncComponent(modules[path]))
}

app.mount('#app')

Glob Pattern Examples

// All .vue files in a directory (not recursive)
import.meta.glob('./components/*.vue', { eager: true })

// All .vue files recursively
import.meta.glob('./components/**/*.vue', { eager: true })

// Specific naming pattern
import.meta.glob('./components/Base*.vue', { eager: true })

// Multiple patterns
import.meta.glob([
  './components/Base*.vue',
  './components/App*.vue'
], { eager: true })

// Exclude patterns
import.meta.glob('./components/**/*.vue', {
  eager: true,
  ignore: ['**/*.test.vue', '**/*.spec.vue']
})

TypeScript Support

// main.ts - with proper typing
import { createApp, Component } from 'vue'
import App from './App.vue'

const app = createApp(App)

const modules = import.meta.glob<{ default: Component }>(
  './components/base/Base*.vue',
  { eager: true }
)

for (const path in modules) {
  const componentName = path.split('/').pop()!.replace('.vue', '')
  app.component(componentName, modules[path].default)
}

app.mount('#app')

Migration Checklist (Webpack to Vite)

Reference

• Vite - Glob Import
• Vue.js Component Registration