Metro Guide

Native

If you're using a monorepo, you probably want to use this Metro configuration in your metro.config.js:

metro.config.js
// Learn more https://docs.expo.io/guides/customizing-metro
const { getDefaultConfig } = require('expo/metro-config')

/** @type {import('expo/metro-config').MetroConfig} */
const config = getDefaultConfig(__dirname, {
  // [Web-only]: Enables CSS support in Metro.
  isCSSEnabled: true,
})

// Expo 49 issue: default metro config needs to include "mjs"
// https://github.com/expo/expo/issues/23180
config.resolver.sourceExts.push('mjs')

module.exports = config

Web support

Early support for Metro web support is here.

First install @tamagui/metro-plugin:


yarn add tamagui @tamagui/config @tamagui/metro-plugin

Then adjust your metro.config.js:

metro.config.js
// Learn more https://docs.expo.io/guides/customizing-metro
const { getDefaultConfig } = require('expo/metro-config')

/** @type {import('expo/metro-config').MetroConfig} */
const config = getDefaultConfig(__dirname, {
  // [Web-only]: Enables CSS support in Metro.
  isCSSEnabled: true,
})

// add nice web support with optimizing compiler + CSS extraction
const { withTamagui } = require('@tamagui/metro-plugin')
module.exports = withTamagui(config, {
  components: ['tamagui'],
  config: './tamagui.config.ts',
  outputCSS: './tamagui-web.css',
})

If you're using Metro as your web bundler, you have to turn isCSSEnabled on. See Expo's docs .

Webpack

create-tamagui

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