meteor-vite

Use Vite in your Meteor app! ⚡️

Roadmap

• Development mode
• Build
• Importing non-core Meteor packages
• Lazy meteor packages
• Reify support
  • Named exports
  • Default exports
  • Re-exports (named + wildcard)
  • Re-exports via intermediary variable
• Code-splitting/Dynamic imports
• SSR (not tested)
• Starter/demo templates
  • Vue 3
    • Live demo
  • Svelte
  • React

Installation

meteor add vite:bundler && meteor npm i -D vite meteor-vite

You can also install any vite plugin, for example @vitejs/plugin-vue:

meteor npm i -D @vitejs/plugin-vue

Make sure to have an import client entry (meteor.mainModule.client) in your package.json:

{
  "name": "my-app",
  "private": true,
  "scripts": {
    "dev": "meteor run",
    "build": "meteor build ../output/vue --directory"
  },
  "dependencies": {
    "@babel/runtime": "^7.17.9",
    "meteor-node-stubs": "^1.2.1",
    "vue": "^3.2.37"
  },
  "devDependencies": {
    "@types/meteor": "^1.4.87",
    "@vitejs/plugin-vue": "^3.0.3",
    "typescript": "^4.6.3",
    "vite": "^3.0.9"
  },
  "meteor": {
    "mainModule": {
      "client": "client/main.ts",
      "server": "server/main.ts"
    },
    // "viteConfig": "", // If you want your Vite config to live in another directory (e.g. .tools/vite.config.js), specify that here.
    "testModule": "tests/main.js"
  }
}

You can leave your Meteor client entry file empty, but it's necessary to enable Meteor import mode. In the example above, we can create an empty client/main.ts file.

Create a Vite configuration file (vite.config.js) in your project root:

import { defineConfig } from 'vite'

// Example with Vue
import vue from '@vitejs/plugin-vue'

export default defineConfig({
  plugins: [
    vue(),
  ],
  // Other vite options here...
})

As we don't use a standard Vite index.html file, we need to specify an entry point (different from the Meteor one):

import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'

export default defineConfig({
  plugins: [
    vue(),
  ],

  meteor: {
    clientEntry: 'imports/ui/main.ts',
  },
})

You can then write your code from this entry point and it will be handled by Vite! ⚡️

Features

Lazy Loaded Meteor Packages

Meteor-Vite will automatically detect lazy loaded Meteor packages and import them into your Meteor client's entrypoint. This is necessary to ensure that the Vite bundler has access to your Meteor packages.

The imported files can safely be committed to your project repository. If you remove the associated package in the future, simply remove the import statement.

Our detection for these packages is fairly primitive, so it's best to keep the imports in the Meteor client entrypoint as specified in the meteor.mainModule.client field of your package.json file.

{
  "meteor": {
    "mainModule": {
      "client": "client/main.ts", // Lazy loaded packages are checked for and added here.
      "server": "server/main.ts"
    }
  }
}

Stub validation

Runtime validation at the client is performed for Meteor packages that are compiled by Vite. This is done to avoid a situation where Meteor-Vite incorrectly exports undefined values from a Meteor Package. Which can lead to silently broken Meteor packages.

The validation is done simply through verifying that package exports do not have a typeof value of undefined. If you do have a package that intentionally has undefined exports, you can disable the warning message for this package by excluding it in your Meteor settings.json file;

// vite.config.ts

import type { MeteorViteConfig } from 'meteor-vite'

export default defineConfig({
  // ...

  meteor: {
    clientEntry: 'imports/ui/main.ts',
    stubValidation: {
      /**
       * list of packages to ignore export validation for.
       */
      ignorePackages: ['ostrio:cookies'],

      /**
       * Will only emit warnings in the console instead of throwing an exception that may prevent the client app
       * from loading.
       */
      warnOnly: true,

      /**
       * Set to true to completely disable stub validation. Any of the above options will be ignored.
       * This is discuraged as `warnOnly` should give you an important heads up if something might be wrong with Meteor-Vite
       */
      disabled: false,
    }
  } satisfies MeteorViteConfig['meteor'],
})

Package Details

The Vite integration comes with two dependencies that work together to enable compatibility between Meteor and Vite.

• meteor-vite - Internal Vite plugin and server worker parsing and formatting Meteor packages for Vite.

  • View changelog
  • View on npm

• vite-bundler - Meteor build plugin for launching Vite workers and compiling production bundles from Vite and Meteor.

  • View changelog
  • View on Atmosphere