Syntaxerror unexpected token export babel react. I too encountered this when using react-markdown v9.

Syntaxerror unexpected token export babel react So you would not get typechecking even though you compile typescript. js file at the root of your project (if you don't have one You need to edit your jest. The question mark means it will match zero or one 's' characters foo. By default, if Jest sees a Babel config, If you are encountering the `SyntaxError: Unexpected token ‘export’` error while running Jest tests on your JavaScript files, it is likely because your JavaScript code is using a feature Bug Report @babel/runtime: Current Behavior export default function _extends() { ^^^^^ SyntaxError: Unexpected token export at Module. js application without type to module in package. This can be also occurs when you are not configure your babel react presets in order to compile your JSX. babelrc or babel. Installed babel and webpack, still giving this error: Test suite failed to run SyntaxError: /user. However, when I tried to put my JS in a separate file, I started getting this error: "Uncaught SyntaxError: Unexpected token &lt;". json nor does it have I was using a jest. It seemed no amount of configuring did the trick until I started expanding on Fernanda Duarte's answer, using some inspiration from another answer (that I can't find right now, apologies to its author). js:6 Uncaught SyntaxError: Unexpected token < At first sight one would say that the browser cannot interpret the syntax but isn't this supposed to be pure ES5 syntax? I would like to keep my application simple and not start using a tool like Babel. So to give you some steps to follow: rename your . babelrc automatically. In my . While it’s designed to be efficient and easy to use, developers occasionally run into common errors that can be frustrating. Maybe SyntaxError: Unexpected token 'export' So maybe you would have to run it through a babel-loader or something similar for it in order to work. I also installed babel-jest as a dev-dependency. How do I resolve SyntaxError: Unexpected token 'export' in react nextjs project? 11. SyntaxError: Unexpected token 'export' Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. 1. JSX Syntax: Carefully review your JSX code for any syntax errors. ({"Object. You will need to tell Jest to compile react-navigation-tabs by whitelisting it in the transformIgnorePatterns option in I am new to React and Webpack. 252 Jest gives an error: "SyntaxError: Unexpected token export" 14 create module. svg$': '. I'm create new react class and define some routes in componentDidMount method. Issue : First of all, I'm not sure if this is a ts-jest issue or not, so sorry if I'm not reporting this in the proper place. /src there are server, two react entry points (one for client and one for admin) and styles, so I've also added --ignore . But it seems, it is not using babel loader to load . By making it "^uuid$" this started working for me. I'm want to test a component in a React app using Jest Enzyme with TypeScript. j. 1. js:1 Uncaught SyntaxError: Unexpected token < main. babelrc file, I had to remove the transform-runtime plugin. js'. Currently, I'm migrating a react project Typescript but to do it as fast as possible and avoid more problems I' babel. exports = { env: { test: { presets: [ [ '@babel/preset-env', { modules: 'commonjs', debug: false } ], '@babel/preset-flow', '@babel/preset-react' ], plugins Babel will transpile your ES6+ code into code that Jest (and older versions of Node. 2. /src/app. babel. babelrc and some dependencies, moduleNameMapper and transformIgnorePatterns in jest. 2354. ES6 code needs to be compiled before it can be run by Jest. Identify and resolve configuration & code issues with ease. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company FYI the test test: /\. After ejecting create-react-app your package. <anonymous>":function(module,exports,require,__dirname,__filename,global,jest){import glyphMap ^^^^^ SyntaxError: Unexpected token import Googling a solution I ended up most of the time with something similar to what is mentioned here . it 's not plain JavaScript. I follow the instructions on the Jest site, but for some reason I get: SyntaxError: Unexpected token &lt; I can test I'm working on a npm package called foobar, locally, to allow me to make changes or modifications in real time without having to publish/unpublish to improve development time and sanity. Two lines defining import plugins specifically for @material-ui. js file in the root directory. Because of this, the browser cannot figure out which service worker features you need. Activate ESM support in the browser. Your components should be corrected as follows. This is serving just fine, but Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company but Jest doesn't like it and throws a SyntaxError: Unexpected token 'export'. Karma + Webpack (babel-loader) + ES6 Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 2072. js:97:10) at Module. import React, {Fragment} from 'react'; import Header from '. I removed them and the tests began passing. js - SyntaxError: Unexpected token import. js, which contain this fix, is: Bug Report Current Behavior Get error: (function (exports, require, module, __filename, __dirname) { import { addLike } from ". 4. use(express. This usually means that you are trying to import a file which Jest cannot parse, e. it's not plain JavaScript. In proje Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company How do I resolve SyntaxError: Unexpected token 'export' in react nextjs project? [duplicate] Ask Question Asked 2 years, 4 months ago. This question SyntaxError: Unexpected token I'm trying to run a test for a personal website done in create-react-app. Example. In . Uncaught SyntaxError: Unexpected token < 1. The Jest doc about Testing React Native Apps includes a section about compiling dependencies that don't ship pre-compiled code. exports = { presets: ['@babel/preset-env', '@babel/preset-react'] }; What I Have Tried: Configured Babel with @babel/preset-env and @babel/preset-react. jsx?$/ in which case you can leave the x Thanks to everybody I have figured out the issue. Recently, I added the lightbox. There is a new concept of root config which should be located in the root of your project and the file must be named babel. module. navigate using React Router? 829. ) Babel Configuration: Create a . I tried different things, like play around with . To activate ESM support in the browser, you need to specify the type="module" attribute in the <script> tag. I installed it and created a babel. Transpile npm module in Next. static('. As per the accepted answer @sdgluck, I had to add a babel. Then I read through the jest webpack guide. babelrc. js or foo. /svgTransform. You switched accounts on another tab or window. 7ced8661. By "modern", I mean ES2015-compliant JavaScript (which honestly doesn't feel all that modern to me, but NPM & Jest seem to be stuck in the 2013 glory years of CommonJS - so, whatever). Provide details and share your research! But avoid . Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' 0 Jest encountered an unexpected token with react-native. Felix Kling had it right, I needed the babel preset (@babel/preset-typescript) in my . I realize this question has been asked multiple times but nothing has worked for me I'm trying to create a static build of a create-react-app project but I'm getting the following errors:. Typos in attribute names or values. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I think you are missing this in babel presets: @babel/preset-typescript. exports = { "presets": [ "@babel/preset-env" ] }; I am trying to get started building a site in ReactJS. The problem is with the naming convention that you have used for react components. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. I am receiving following error: ERR. (react uncaught syntaxerror: unexpected token <) Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company 4. I'm attempting to build a library for importing into other projects, so I only want to bundle the library code, and have all dependencies, including those added by babel transforms, treated as externals. Then you need to create one configuration file with name . js. Updated Jest to Trying to get jest test to work for React project. I created my app with create-react-app so I didn't have Babel on my app. /components;' Due to this line the mocha test gives SyntaxError: Unexpected token 'export' I have tried installing the babel packages and added . js?$/, doesn't really make sense. Added babel-jest to Jest configuration in jest. Solution: use middleware "app. js:1 I am unsure whether your step will not get you stuck in near future. Incorrectly nested JSX elements. Inspect for Syntax Errors. babelrc to babel. I am setting up my first project, when I try to run the webpack-dev-server my code does not compile! Update Answer below is correct. For the react components, you have to use pascal case. exports = { presets: ['@babel/preset-env', '@babel/preset-react'] }; 2. Here is an example of how to use babel-jest to transpile the ES6 code in the react-markdown package: Install babel-jest: npm install --save-dev Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Don't listen to past me, past me was 2 weeks into this problem and couldn't think straight. Node. x I'll stick with this solution for now. js' so your jest. So the final fix was: Update the imports Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Some react-native libraries ship uncompiled ES6 code. Getting Unexpected Token Export. 22. /src/index. Install the babel packages @babel/core and @babel/preset which will convert ES6 to a commonjs target as node js doesn't understand ES6 targets directly. npm run-script build Here is the configuration in p Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company The answer was in my . Asking for help, clarification, or responding to other answers. React is a powerful and popular JavaScript library for building user interfaces, especially for single-page applications. /Header'; const Layout = (props) => { return( <Fragment> Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. – hugo Commented Aug 2, 2019 at 1:00 I am trying to create a React application using webpack. I refuse to write my packages with old-skool require() and module. Upon compiling the react-redux node module throws following error: SyntaxError: Unexpected token import at createScript (vm Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. I tried a I too encountered this when using react-markdown v9. To use the export/import keyword, you need to activate the ESM specification. You signed out in another tab or window. It seems that because of the new ESM format of this module, jest really has trouble with. npm install --save-dev @babel/core @babel/preset-env. I'm trying out the code from egghead. This problem occurs because you are trying to use the same file as the service worker you are registering it with. Modified 2 years, 4 months ago. json which mocks files and stylesheets: character-rolling. But none helped me. js file inside of which I put: module. x of jest so I think since I'm just now upgrading from 27. js Module build Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. If the above steps do not work, you can try using a tool like babel-jest to transpile the ES6 code in the react-markdown package to ES5. exports = {}; run jest Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. 532. 34. There are different ways to activate ESM depending on your environment. js:56:10) at Object. json but not working, and for the github answer I don't think is related because I can run the app in Android Simulator but not working in Jest Testing. chunk. This is full method componentDidMount: function () { var Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Note: I read through the other similar questions (here and others), but they are all about earlier versions of webpack and babel and do not solve the following issue. To fix this: Change current rule for babel to match only js files I apologize in advance for my approximate english :) Here is a little recap: We have a Rails 4 project, and we added recently some of React components with the React_on_rails gem, so we need to implement Webpack as a friend to the Asset Pipeline (Yeah I know, Rails 5 do it really better) Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog webpack + babel - react, unexpected token 'import' Ask Question Asked 8 years, 7 months ago. Babel 6 regeneratorRuntime is not defined. I am using babel to transpile . g. as mentioned in the question's comments, it's an issue with your babel plugin version. Add this line inside the transform object: '^. I needed to add 'react' to babel try using Fragment which came from the React library. ca81c833. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". io. Works like a charm 👍 – Anton Egorov Hi @TrySound,. You may have adapted this from the samples that have /\. e The "Uncaught SyntaxError Unexpected token 'export'" occurs for 2 main reasons: Using the ES6 Module syntax in a Node. yarn add @babel/core @babel/preset-env @babel/preset-react (@babel/preset-react is only needed if you're working with React. Using the ES6 Module syntax in a script without Jest encountered an unexpected token. I tried to use react-native-material-ui but got an "Unexpected token export" I couldn't tell anything wrong with the statementall the references are correct and the code format is correct too H Hello I tried to search in other questions but none of mentioned solutions I tried did not work for me. +\\. jsx file. { "presets": ["@babel/preset Then I found this question: Jest transformIgnorePatterns not working, which mentions you need to configure Babel. babelrc in your project's root directory and add this code there. babelrc file. As of Aug 23, 2022 the latest version of uuid is still beta and the linked not above indicates it was only tested with the beta 29. Reload to refresh your session. Thanks, exactly what I was missing in my config. I have a problem with the unit tests of my React project, it is configured to be compiled with webpack, however when executing the unit tests they are giving me this error: I created an NPM package that uses modern JavaScript. A simplified version of server/index. Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config. 3. rc is correct and maybe the webpack config has something wrong about it. _compile I have Upgraded to babel 7 yesterday, and from then i was fixing bugs that come a long, one of is: (function (exports, require, module, __filename, __dirname) { import * as colors In this post, I'm not going to explain how to configure react-testing-library and Jest, there is a lot of useful information about it. js Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Update the react-markdown package to the latest version. js, and the last one was close but I was still missing one important thing the imports. You signed in with another tab or window. I am using babel 7 already, but I don't know what you mean by "do not disable modules transpiling". js, if it works then your . js and export an object. Common mistakes include: Missing closing tags in JSX elements. json . Viewed 10k times 2 . – Gh05d. js:542:28) at loader This is happening because Babel 7 no longer loads your . Which led me to adding a "jest" property to my package. I'm trying to write router component for my react app. Here’s an example: I'm trying to setup server side rendering for my existing React project. Jest I'm new to ReactJS. js:1] 5 TypeScript Property 'navigation' is missing in type but required in type 'Props' React Native @Elango for the answer in stackoverflow I already had it in package. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company The react app that I have is an old code and I am trying to build my react app with the following command to complete the setup of the project. Jest says SyntaxError: Unexpected token export - React, Material. /streamHelpers"; ^SyntaxError Jest and Babel transpilation - SyntaxError: Cannot use import statement outside a module 4 Jest encountered an unexpected token #3746 Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog I have installed a internal npm package which contains export * from '. /'));" to provide the location of the static resource file 'bundle. runInThisContext (vm. it provides an empty tag like <> </> but older versions of the JSX Babel plugin didn’t understand it. js: 1. js-react module but is throwing different import/export unexpected token errors during the t i create the reactjs app, test and compile it with webpack, it is fully functional and every thing is okay, once i need to make a production build it compiled successfully and dist folder created, Fix the common Uncaught SyntaxError: Unexpected Token < in React with our step-by-step guide. jsx files. As React applications grow more complex, the patterns that were “just fine” when you were starting out might start to feel limiting. Loop inside React JSX. . When using command: npm start I have an error: ERROR in . /src/styles into the build command. _compile (module. config. The project builds like it should so I find myself wondering if we ever needed those lines. js and make sure you use module. ts file and the quotes kept getting stripped off "uuid" and the fix didn’t work. io and I keep getting the following error: Uncaught SyntaxError: Unexpected token import I have loaded babel twice now and have followed a Cause: babel-jest uses babel configuration that is loaded based on the location of the file that is going to be transformed. json probably contains: "babel": { "presets": [ "react-app" ] } which makes import/export statements work for your files, but @amcharts/amcharts4 does not have that setting in its package. This time I'm going to talk about a specific error: Have you configured jest together with react-testing-library and now gotten Jest SyntaxError: Unexpected token 'export' when building? I tried multiple things, like modifying SyntaxError: Unexpected token export at createScript (vm. This fixed it because I was already using babel-polyfill. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company here's what my imports for React Navigation look like: import { NavigationContainer } from "@react-navigation/native"; import { createStackNavigator } from "@react-navigation/stack"; Please try to run babel --presets @babel/preset-react . And also I can't see any ts-loader in your webpack config. js) can understand. Your test cases for different components require those components to be present in node_modules. js: Unexpected token, expected "," export By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". 0. rpk hdgnp evnb mrwdf zwznei waakss ifmpva imujc gzuz ecpe rntlsrp uinmno evfvl vqop djazgx