Expo babel config. Dec 13, 2023 · To clarify a bit further, in SDK 49 babel-plugin-module-resolver used to alias react-native-vector-icons. allowDeclareFields boolean, defaults to false. js: module. Make sure that react-native-reanimated/plugin is added to babel. js file in my project root. Provide details and share your research! But avoid . Expo Router is a file-based router for React Native and web applications. x, Babel has a concept of a "root" directory, which defaults to the current working directory. Added in: v7. root. js means you can share some of your existing components and APIs across your mobile and web app. js: boolean, uses the default set by @babel/plugin-transform-typescript. Sep 1, 2023 · To use it in our Expo project we are going to use NativeWind (opens in a new tab) This generates your tailwind. exports = function (api) { File is a CommonJS module; it may be converted to an ES6 module. Jan 18, 2024 · Babel configuration changes in babel-preset-expo: we made a variety of small quality of life improvements in our Babel preset: we removed transforms that aren't necessary when targeting Hermes, we no longer alias react-native-vector-icons to @expo/vector-icons in the Babel preset (it's now done in the Metro resolver instead), and we now add the New in Babel 7. When enabled, type-only class fields are only removed if they are prefixed with the declare modifier: Mar 22, 2022 · 1. You dont need to the app. babelrc file (or babel. For example I've created new app with react-native-cli, installed decorators plugin and filled my babel. mjs, cjs or . babelrc file, make sure that it includes babel-preset-expo. I got around the problem by changing the config to a json file - babel. expo-router/babel was merged in babel-preset-expo in SDK 50 (Expo Router v3). json. All Babel API options are allowed. exports = { presets: ['module:metro-react-native-babel-preset'] }; Im currently using React Native 0. To get smaller bundle size by excluding modules you don't use, you can use our optional babel plugin. I combined the two config into one babel. js to babel. 0 Jul 3, 2023 · Nothing about EAS, nothing about adding configuration in babel, nothing about metro. ~18% Smaller production bundles. Here is a link for a more detailed explanation of Apr 28, 2017 · Update: Expo v32. config Babel. Same thing happening to me, but with module-resolver, since I want to have absolute imports, it took me a while to realize that the entire babel. json se estiver usando JavaScript). js, isso serve para quando o React Native consiga entender os caminhos quando montar o bundle. They can be used to add native modules that aren't included, by default, or to add any native code that needs to be configured further. Dec 21, 2017 · Babel configuration for react-native Expo. Hot Network Questions Proof related to factorization of a quadratic Nov 8, 2020 · Hi @hvaandres, it seems that you added 2 incompatible libraries. js, and app/+html. json package. Mar 3, 2022 · O compilador (Babel) — Aqui são feitas algumas configurações no arquivo babel. Expo's Metro config has monorepo support for bun, npm, and yarn. npm install babel-plugin-inline-dotenv Include the plugin and the path to the . Nov 30, 2018 · Unable to use babel-plugin-module-resolver with expo and react-native. A Babel plugin to add a new resolver for your modules when compiling your code using Babel. If the value is a string, it is treated as a runtime version number and passed as version to the @babel/plugin-transform-runtime configuration. EXPO_PUBLIC_API_URL; From babel-plugin-transform-inline-environment-variables Using a Babel plugin to transform your environment variable references in your code is similar to how Expo environment variables work. api. I'm using react-native 0. What is a config plugin. 3. extension. React native project with expo-localization and i18n-js. The env key is not needed anymore. json (jsconfig. Setup 1. Aug 11, 2022 · npx expo customize allows you to pass in filenames to generate without prompting: npx expo customize babel. js file and add your alias. js to load it: Unit test. cache(true) return { presets: ["babel-preset-expo" Sep 15, 2021 · App. Add this to your babel. boolean, defaults to false. plugins: ['react-native-reanimated/plugin'], step 3 When trying to run the code after close the terminal I still I'm facing same issue. It also allows you to setup a custom alias for directories, specific files, or even other npm modules. package. js extension as a test and includes it in the tests queue. Spin up a new React Native TypeScript project: `npx react-native init MyApp --template react-native-template-typescript` 2. I would search around the global node_modules folders to try to understand what is going on. Here is the code for babel. This can be used to change the preset based on the environment. Dec 18, 2022 · the plugin is not supposed to go into expo config, as it is babel plugin, not expo one. This plugin allows you to add new "root" directories that contain your modules. js is a React framework that provides simple page-based routing as well as server-side rendering. This has got to do with Babel settings. 3. Caveats to keep in mind about React Native Windows support: Windows support is new and experimental To start, you only need to define a . js babel. In Expo Router, use the npx expo export --platform web command to export to the dist directory. json part if you use useFont. My babel. js like this: return {. Jan 24, 2024 · I only tried dynamic font loading with useFont. The results are as follows (measured against a hello world app): ~2x Faster for initial bundling. ts: None of these files exist: Feb 12, 2022 · Saved searches Use saved searches to filter your results more quickly May 24, 2019 · It looks like the installation of Expo CLI did not go correctly. gitignore App. Using a Preset. js, are missing some edits to get it working with next. When bundling for a server environment, Expo's Metro config automatically Dec 21, 2021 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. To review, open the file in an editor that reveals hidden Unicode characters. exports = { plugins: [ [ 'module:react-native-dotenv', { envName: 'APP_ENV', moduleName: '@env', path Mar 22, 2021 · I had the same problem, I just removed the '@' from my aliases and it seems working fine now. tsx Aug 10, 2023 · Aug 11, 2023 at 2:25. API_URL; + const apiUrl = process. js or . . Aug 12, 2023 at 9:51. Using Expo with Next. js for you. js file (because in my case what was in . I don't use expo in my project, but I use babel-preset-expo. 12. { "presets": ["babel-preset-myPreset", "@babel/preset-env"]} Feb 4, 2019 · Third, ensure your babel. To write your first unit test, start by writing a simple test for App. Apr 26, 2018 · Starting the expo local server with exp start as needed for notification setup. json file, or an equivalent one using the supported extensions, in this root directory. I updated my app SDK 48 than 50. In SDK 50, that alias was removed and so dependency was as well. js using expo/metro-config getDefaultConfig() not handling path aliases It seems that we still need to use module resolver in babel. js: Cannot find module 'babel-plugin-babel-preset-expo Any solution would be appreciated. Add expo-router/babel plugin as the last item in the plugins array to your project's babel. Setup Tailwind CSS . 67 version. js Oct 3, 2019 · How to debug babel. You switched accounts on another tab or window. web The app config ( app. Jun 6, 2019 · edit: I managed to fix this by clearing my expo cache so run: expo start -c. Steps to reproduce: `expo init' Choose tabs. js. Adding Web support to Metro. Jun 24, 2021 · So I am using minimal workflow with Typescript and I have this in babel. You can generate sourcemaps with the --dump-sourcemap flag. test. tsx","path":"App. I needed this configuration at the root of my directory babel. return <Drawer />; Oct 25, 2017 · Babel configuration for react-native Expo. Feb 8, 2024 · React Native SDK 50 Upgrade Babel Config Problem. Modify the Metro config. js 12. I follow the following step to fix it. Always use babel-preset-expo as the default Babel preset, this ensures the transformation is always compatible with Expo runtimes. 0. I've noticed that there are virtually no info from babel on incorrect configuration. Expo init is creating a babel. cjs, then you will need to change your config file to be commonjs, i. Here is a minimal example: app. Asking for help, clarification, or responding to other answers. Here is an example of how to use api. Mar 28, 2023 · => Found "find-babel-config#json5@0. yarn add react-native-reanimated react-native-gesture-handler and then exit server then run expo r -c This worked for me. By default "node_modules" folder is ignored by transformers. npm i --dev tailwindcss@3. To enable Metro web support, make sure your project is using Expo SDK 46 or newer. cjs Jun 1, 2022 · also note that you should only do this in production by using the env config as you can see in that blog post. Dec 21, 2023 · Saved searches Use saved searches to filter your results more quickly Apr 17, 2021 · Here is what worked for me in an Expo project. Applies the babel-preset-expo preset that extends the default React Native preset and adds support for decorators, tree-shaking web packages, and loading font icons with optional native dependencies if they're installed. configuring babel. Clearing a cache sometimes can help you work around issues related to stale or corrupt data and is often useful when troubleshooting and debugging. If that's the case, you can skip this step. Did you forget to add Reanimated Babel plugin in babel. json file, or an equivalent one using the supported extensions , in this root directory. In the merge request was made changes where was added import { ExpoConfig, getConfig, getNameFromConfig, ProjectConfig } from 'expo/config'; which I guess broke my build. js on react native project. Here is my babel. js extension for the babel. js, babel. expo install react-native-reanimated react-native-gesture-handler instead of. For me, a lot of things were not working : expo vector icons did not show up, sound loading did not properly work, custom font loading did not work. Mar 12, 2023 · Error: Failed to create a worklet. json) directories in your project that But if you have a babel. I'm using React and Firebase. Create a test file for it and call it App. It brings the best file-system routing concepts from the Oct 15, 2021 · EXPO_USE_EXOTIC=1 expo start. Alternatively, users can use an explicit "configFile" value to Next. js: {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"assets","path":"assets","contentType":"directory"},{"name":"App. End product: Jan 10, 2020 · "The package babel-preset-expo extends @babel/preset-env on web and is used to configure your project for Unimodules. cache (true) does exactly that. I have used babel-plugin-inline-dotenv for this. yarn add nativewind. babel. js with the Expo SDK, we recommend using @expo/next-adapter library to handle the configuration. Here's the one from my project running Expo's SDK 32: Babel configuration for react-native Expo. Feb 25, 2024 · babel. eslintrc ), Prettier ( . js) in the root directory of your project. npm i react-native-reanimated. Have installed both babel-plugin-inline-dotenv and dotenv (and tried without dotenv installed too), both options haven't worked. Com isso o VS Code Environment configuration. When I'm trying to import files from root directory with import {Config} from "~/Config/Config" the "Unable to resolve module" appears. babel-preset-expo uses all of the caller inputs internally to optimize for a given platform, engine, and environment. note that you should not change from babel-preset-expo to 'module:metro-react-native-babel-preset' - that is not required and will cause problems for you Sep 10, 2020 · I have the preset metro-react-native-preset already installed and my babel config looks like the following: babel. The core feature is that it won't compile your modules to core. You can also add nativewind to your transpilation list through the @expo/webpack-config babel options. It is also suggested to rename the babel. 9 and 2. 1" info This module exists because "babel-plugin-module-resolver#find-babel-config" depends on it. To use Next. プラグインをインストール. You can take a look at this file to learn about the presets included by Apr 3, 2022 · If using expo, use. New in Babel 7. This is added to the presets config option, which takes an array. cache(true After changing your babel. Details: Oct 12, 2023 · You signed in with another tab or window. The plugin automatically rewrites the import statements so that only the modules you use are imported instead of the whole library. js, clear the babel cache npx expo start --clear. Then modify your app config to enable the feature using the expo. – Taimoor Hamza. babelrc and babel. // presets: ['babel-preset-expo'], }; So I expect it won't hit the cache and run everytime i build. If you previously wrote your website using the deprecated @expo/webpack-adapter, see the migration guide and comparison chart. js filename in order to avoid conflicts with Expo and NextJS in our project; Install necessary babel dependencies. ts) is used for configuring Expo Prebuild generation, how a project loads in Expo Go, and the OTA update manifest. Babel can be configured! Many other tools have similar configs: ESLint ( . useSpread . This can improve the performance of the build process. I am facing some problems in using absolute paths while importing the modules. Check babel docs if you need a different config. Internally Expo CLI uses config plugins to generate and configure all the Dec 12, 2018 · By default, Babel will evaluate configuration each time it processes a new file. Aug 11, 2023 · . 0 and up. js, metro. yarn add --dev tailwindcss@3. When the cache is enabled this way, config function will be called only once. env. js when targeting web, this means that you get optimal tree-shaking and dead-code-elimination. You signed out in another tab or window. NOTE: This will be enabled by default in Babel 8. js file Sep 24, 2022 · 1) Make sure reanimated's babel plugin is installed in your babel. The default babel configuration will both compile the Tailwind CSS styles and transform any component with the className attributed into a styled version. I did almost everything found on different threads regarding Sep 13, 2023 · The Babel config is used to transpile the API routes. js: Jun 14, 2020 · This seems to be an issue with Babel not recognizing typescript and converting it to javascript but I'm not sure how to fix it. > distApp // React app files (src folder down below) transpiled to Node v10. Unable to resolve module . js as mentioned in SDK 49 and below installation step. This preset extends the default React Native preset ( metro-react-native-babel-preset) and adds support for decorators, tree-shaking web packages, and loading font icons with optional native dependencies if they're installed. tsx files are run in a Node. js, module. Nov 23, 2021 · Given that information. js package-lock. Jest identifies a file with the . config. or. 2. This means that Babel will only evaluate the configuration function once, and then reuse the cached result for subsequent compilations. If such a file is found, it will be considered as the source of truth, and therefore it needs to define what Next. j I've already added to the babel config file. log on the babel. You can see the changel Nov 11, 2019 · 6. 0. Nov 12, 2020 · Manually import the expo presets we needed, and then and add our own baseConfig; Set up a special babel config just for jest, without using the conventional babel. If you're upgrading from a version of Expo Router that is older than v3, remove the plugins: ['expo-router/babel']. js is still running from cache after reload the app. You don't have to manually configure Metro when using monorepos if you use the config from expo/metro-config. For project-wide configuration, Babel will automatically search for a babel. expo folder, meaning runs are more idempotent — before this change, URL arguments like --port could leak into different Expo CLI processes. Feb 20, 2019 · I am trying to use babel-plugin-auto-import to auto-import React. Project-wide configuration. The latest version doesn't have a reference to @babel/plugin-proposal-export-namespace-from anymore. prettierrc ). js : babel. This will enable a set of experimental bundler improvements for Metro (the default bundler for React Native), the most notable of which is a faster JavaScript transformer. exports = { presets: ['module:metro-react-native-babel-preset'], Mar 5, 2023 · I am working on a React Native Expo project and trying to use Babel to transpile my code. > buildScripts // Some build scripts to replace some import paths. cache(true) in babel. js built-ins. js needs as well, which is the next/babel preset. expo-cli depends on babel-runtime, so @expo/dev-tools should be able to find it as a peer dependency. However, the source code is written in JavaScript in an Expo app that runs in multiple different environments. babelrc is okay to be in babel. Copy. expo api assets components navigation node_modules screens . Adding this version of babel, which I personally don't think you should need to add, may causes issues between these two. Note that react-native-reanimated/plugin must be at the last plugin in the plugins array of the babel. I came across the well known babel-plugin-module-resolver plugin but i am unable to use it properly. 9. Have installed first with yarn, then removed and installed with npm. to use module. js file: Dec 29, 2022 · I'm using 'babel-plugin-root-import' and typescript to configure absolute path. Dec 29, 2018 · Babel configuration for react-native Expo. Expo react native not using plugin defined in babel. Add the paths to all of your component files in your tailwind. Run npx tailwindcss init to create a tailwind. cd simpleproject. npm i nativewind. A unit test is used to check the smallest unit of code, usually a function. js as follows: presets: ['module:metro-react-native-babel-preset'], plugins: ['@babel/plugin-proposal-decorators Jul 10, 2022 · It seems like there was a breaking change between react-native-reanimated 2. You can also modify this file to add additional Babel plugins or presets. The first would be "babel": "^6. Reload to refresh your session. info Disk size without dependencies: "68KB" info Disk size with unique dependencies: "68KB" info Disk size with transitive dependencies: "68KB" info Number of shared dependencies: 0 Will use the native built-in instead of trying to polyfill behavior for any plugins that require one. To fix it, move it into your babel. I'm setting up my build script in order to do server-side rendering on some routes of my web app. js was being ignored. It must be located at the root of your project, next to the package. However, if the option requires JavaScript, you may want to use a JavaScript configuration file. See section below if you don't use autolinking. cjs. Run npm test Fails I googled Mar 4, 2011 · If the defaults do not cut it for your project, this outlines the available options for your Babel configuration and their respective default values, but you do not need to add them if you are using the default settings. May 31, 2020 · Describe the bug After starting a RN Typescript project from scratch with Expo, it seems like there is a babel config conflict with @storybook/react-native-server somehow. Config plugin is a system for extending the app config and customizing the prebuild process for your app. 23. js This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Each API route is bundled into a standalone file in the dist/_expo directory. > functions. babelrc would be useful if you want to run certain transformations / plugins on a subset of files /directories. Just add the plugins key to your babel. It allows you to manage navigation between screens in your app, allowing users to move seamlessly between different parts of your app's UI, using the same components on multiple platforms (Android, iOS, and web). Install the @babel/plugin-proposal-export-namespace-from Babel plugin and update the babel. Defaults to true. The use of . Expo webpack versus Expo Metro. This would output a bundle to the web-build directory. And you can test the file is running by putting a console. . step 1. 5. I tried installing @babel/plugin-transform-typescript and @babel/preset-typescript separately but neither worked. json, app. exports = function(api) { api. In my case where I was running LTE Node 12. json babel-preset-expo. 6. exports = function (api) { api. 色々な記事があって混乱しますが以下のプラグインが一番シンプルにできました。 babel-plugin-dotenv-import Whether the transformer should use the @babel/transform/runtime plugin. Install the plugin. For example, the app. ESLint is generally configured for a single environment. I am new to Expo and React Native. I'm building a react project and try to use Babel to simplified the import. About; Dec 12, 2023 · Babel configuration changes in babel-preset-expo: we made a variety of small quality of life improvements in our Babel preset: we removed transforms that aren’t necessary when targeting Hermes, we no longer alias react-native-vector-icons to @expo/vector-icons in the Babel preset (it’s now done in the Metro resolver instead), and we now add In @expo/webpack-config, you could bundle your website for production using npx expo export:web. json I'm completely new to React Native and following a tutorial so bear with me please, the following is my StackNavigator. It is possible to optimize the build process performance by caching config function execution result. 1. Node. env file in your babel. exports = { presets: ['module:metro-react-native-babel-preset'], plugins: ['react-native-reanimated/plugin', 'nativewind/babel'], }; Need some one help to fix this issue. js looks like this Stack Overflow. Right now, my project structure is. Feb 14, 2019 · So Jest seems to be broken out of the box right now, when creating a React Native App with Expo. Than I started dev-client (npx expo start --dev-client --clear) and I try to open Android but I got some error: First, metro-react-native-babel-preset. module. cjs is what is applicable for Nodejs when using "type"="module Jul 16, 2019 · I just ran into the same issues when trying to setup environment variables in my Expo project. js file: Dec 14, 2021 · Fixes #2746 ## Changes Add `@babel/preset-typescript` to `peerDependencies` to fix error: `Cannot find module '@babel/preset-typescript'` ## Test code and steps to reproduce 1. js (you should have 'react-native-reanimated/plugin' listed there - also see the above link for details) 2) Make sure you reset build cache after updating the config, run: yarn start --reset-cache. exports = {rest of your config} Aug 24, 2018 · I was running expo build:ios and needed to clear the cached provisioning profile. This is my babel. Have deleted node_modules and package_lock. cache(false) module. Configure Babel. 2. js is setup correctly. Our package. This allows you to optimize the generated Babel runtime calls based on the version installed in your project. cache(true); return { presets Oct 30, 2021 · The command finishes just fine, but the files created, namely babel. js in React Native enables caching of the Babel configuration function. js and adding Tailwind CSS as a PostCSS plugin. Reduced global side-effects of npx expo start to a single ngrok value in the . Indication is passed to the Babel caller via the isServer boolean. A IDE (Visual Studio Code) — É preciso adicionar algumas opções no arquivo tsconfig. /src/Config/Config from D:\project\src\api\mos-api\fetchMosDataAsync. cd into your app. e. Aug 18, 2021 · Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. Does anyone know how to fix this? Relevant Files. step 2. Within a Babel config, if the preset is on npm, you can pass in the name of the preset and Babel will check that it's installed in node_modules already. Enables compilation of TypeScript namespaces. I successfully compiled developement build with Expo CLI. Expo Web uses webpack, so one possible setup is adding PostCSS to your webpack. add plugin babel. Also on Feb 27, 2024 · After creating your expo project, you can install NativeWind and its dependencies by running the following commands in your project's directory: cd simpleproject. I did so with: expo build:ios --clear-provisioning-profile To see the full list of commands that clear specific elements from the cache, run expo build:ios --help Dec 20, 2019 · babel. Now you can use the Drawer layout to create a drawer navigator: import { Drawer } from "expo-router/drawer"; export default function Layout() {. This is akin to ncc, the tool we use to make Create Expo App download in ~1 second. js file. This is the recommended configuration as it provides the fastest setup and best DX experience, with zero configuration needed for Tailwind Intellisense within your IDE. config There are a number of different caches associated with your project that can prevent your project from running as intended. babel-plugin-module-resolver. and some other to. Maybe you have 3rd party libraries that you don't want to be transformed/changed by babel. I had a . Other people have changed their config file to a commonjs file - babel. 7. 0", it's incompatible because we use babel 7 internally. To configure a monorepo with Metro manually, there are two main changes: Sep 11, 2020 · ReactNative with Expo という構成で環境変数を設定しようと思ったら意外にハマったので備忘録. js too). In my expo-ejected react native project, with the intention of completely disabling a preset, i commented it from babel. js, app. It's fixed now by just deleting node modules and re-install native wind node modules. json includes the following: Set up Babel config in your project - See instructions above for all React Native platforms; Run npx react-native autolink-windows to perform autolinking. Specific issues seem to be related to @expo/next-adapter/babel: '@babel/plugin-proposal-private-property-in-object' & '@babel/plugin-proposal-private-methods' should have same { loose: boolean } setting . I installed and edit my package. 62 Nov 20, 2023 · The api. json is useful if you have multiple packages (ie multiple package. -import Config from "react-native-config"; -const apiUrl = Config. bpejwfzgxhyhtyberfcc