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Syntaxerror unexpected token export jest react native example Modified 2 years, Jest encountered an unexpected token React. js:2:44) at Object. 56 C:\study\reactodo\node_modules\react-icons\fa\angle-down. Dec 1, 2022 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. After ejecting create-react-app your package. An alternative to Chrome DevTools is the experimental new React Native debugger. Not one bit. export function flatten (target, opts) { ^^^^^ SyntaxError: Unexpected token 'export' I made sure my jest was properly installed and set up, as per Next. Provide details and share your research! But avoid …. Sep 5, 2018 · So I'm trying to write tests on my React Native app with Jest and TypeScript. js file in the root directory. The threads span a number of years - meaning that the issue keeps cropping up for people repeatedly. Apr 6, 2018 · Solved this by just copying the component from the repo and putting it directly into our project. By default all modules in node_modules are not transformed, so the solution is to tell jest to transform it. After spending two days in researching, I've finally run out of ideas. babelrc and some dependencies, moduleNameMapper and transformIgnorePatterns in jest. 1. The "issue" is that Jest only wants to process CommonJS-style code. So I added transformIgnorePatterns to my jest configuration and everything worked: If you follow these tips, you should be able to avoid the Jest SyntaxError: Unexpected Token ‘export’. Apr 3, 2018 · I am unsure whether your step will not get you stuck in near future. By default jest doesn't transform ES6 js code from node_modules. Jun 25, 2017 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. In . 我正在使用 jest 来测试反应 typescript 应用程序。 这是我正在运行的测试： 这是我得到的错误： 我理解这是因为我使用的库 react markdown 没有预编译的源代码。 module. Common Debugging Techniques Jul 23, 2019 · This can sometimes happen if the location of the babel preset library has moved or has been updated in a major update migration e. Mar 11, 2022 · Thanks @arseniy it works! here is my config jest. Modified 5 years, 10 months ago. You signed in with another tab or window. What i get : Details: C:\Users\Hp\OneDrive\Desktop\testing wit Apr 10, 2019 · Cause: babel-jest uses babel configuration that is loaded based on the location of the file that is going to be transformed. Jul 22, 2024 · When testing a React Native component using Jest and react-native-testing-library, an unexpected token 'export' error may occur. js will look like this: Jest SyntaxError: Unexpected Token ‘export’ Jest is a popular JavaScript testing framework. However, while running npm i, I noticed this warning: May 21, 2023 · Configure Jest to use Babel: If you are using ES6 module syntax or any other non-standard JavaScript syntax that Jest does not support, you can configure Jest to use Babel to transpile your code 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 . 0 facebook/react-native@ d380bb8. ts file and the quotes kept getting stripped off "uuid" and the fix didn’t work. 73. Aug 10, 2022 · I have a monorepo with 3 packages, namely: web-app: A NextJS 12 project in Typescript web-core: A redux-toolkit project used in web-app web-ui: A storybook project with components which are being What you did: Running Jest tests for a React Native project with the configuration and code provided above. Sep 24, 2019 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Jun 17, 2020 · You signed in with another tab or window. Many of the threads are long. g. /src there are server, two react entry points (one for client and one for admin) and styles, so I've also added --ignore . 34. If a component is single, and not importing anything else, &quot;npm test&quot; runs smoothly. But even the best frameworks can sometimes throw errors. The packages is collected from several projects to create a reusable libr Jul 3, 2024 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Aug 2, 2022 · Background I have a monorepo project built using Nx. For anyone using create-react-app, only certain jest configurations can be changed in package. js:1] 3 SyntaxError: Unexpected token import with Jest + react-native-animated-ellipsis Feb 6, 2020 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. js:1] 0 Cannot use import statement outside a module with date-fns in Jest after updating to Angular 13 I figured it out. Aug 22, 2017 · ({"Object. Unexpected token 'export' There seems to be an issue with your configuration that prevents React Native Testing Library from working correctly. In my case, the package react-navigation module need to be translated. Tasty treats for web developers brought to you by Sentry. 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. After that i added another component,and added our Sep 15, 2024 · Listen to the Syntax Podcast. Dec 24, 2023 · You can do so by checking for the following configurations: You're Using the Right Transformer ; You're Using the Right Jest Testing Environment ; You're Using the Right " jsx " Mode in tsconfig. This repo contains several reusable libraries for my backend projects. Jest uses a transformer to preprocess files before running tests. Get tips and tricks from Wes Bos and Scott Tolinski. it's not plain JavaScript. While using old babel version everything worked fine, but because of some project problems we had to upgrade babel to 7 Feb 5, 2025 · I'm trying to run a test for a personal website done in create-react-app. component Jan 29, 2025 · Experimental React Native Debugger. import React, { Component } Jan 22, 2022 · I'm using jest to test a react TypeScript app. However, I have just upgraded to AWS Amplify 6, and everything seems to work now without the hacks. Sep 23, 2024 · Lastly, in your jest. Choosing the Right Transformer You can use babel-jest or ts-jest as a transformer: Using babel-jest as the Transformer You should use babel-jest Dec 25, 2020 · [React-Native][Jest]SyntaxError: Unexpected token import. 2) w/ my react native (v0. 0. config. Feb 14, 2022 · Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Share Dec 28, 2022 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. json, I have the failing test: FAIL src/tests/index. When I press on a blue Text, I want it to navigate to the Register screen. Jun 10, 2020 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. Jest was configured and the **last pipeline on dev was able to run test, However, if I clone now, even if I have a package-lock. < Skip to main content Jul 5, 2017 · Thanks, exactly what I was missing in my config. /jsonServer'; export * from '. /svgTransform. Sep 14, 2023 · Description I am trying to run a very simple test to check gluestack-ui and it fails to run due to unexpected 'export' from @legendapp/motion/index. Ask Question Asked 2 years, 6 months ago. Reload to refresh your session. json . component. js:284:10) at Object. You can access it through the following link: Experimental React Native Debugger. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. Sep 10, 2020 · i setup jest and enzyme in my react-typescript project. What you did: Running Jest tests for a React Native project with the configuration and code provided above. Sep 9, 2023 · ts-node and svg import gives: SyntaxError: Unexpected token ‘ ' ts-node and svg import gives: SyntaxError: Unexpected token ‘… Angular Routes Issue/ routes not considering my token conditioning Angular Routes Issue: Routes not considering my token conditioning When working with Angular, you may encounter an issue where the… Sep 13, 2023 · Jest encountered an unexpected token. Any ideas? export default class connects extends Component { render() { return ( Aug 29, 2022 · Jest test fails SyntaxError, unexpected token Export. Jan 29, 2024 · Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. None of the popular solutions here were working for me either. In this article, we'll explore the Each yearly preset only compiles what was ratified in that year. So for the Jest tests to run, it first needs to be transpiled by Babel. Mar 14, 2019 · @krizzu, no help, at least, with the "Jest setup file" option. Jul 16, 2017 · export simpleRestClient from '. Jest encountered an unexpected token with react-native. 这里是成功的代码。但出现的错误，下面有描述。 我们知道在使用 react-navigation 的时候需要安装这个依赖。既然我们知道错误是那一个插件，那么查找错误就相对容易些；有两个方向，首先看这个插件或者看 react-navigation 上有没有说明。 Jun 27, 2022 · I have the following issue when I tried to test a react components that implement the react-leaflet library C:\digital-booking-ui\node_modules\react-leaflet\lib\index. A lot of node modules export ES5 so that jest can run it out of the box without transform. Nov 27, 2023 · Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. x I'll stick with this solution for now. 10 to 0. Recently, I added the lightbox. Apr 15, 2023 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 0) project however when I run the jest command I'm receiving the following error: Test suite failed to run /Users/kyledecot/ Apr 12, 2020 · Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. CodeSandbox/Snack link No response Steps to r Apr 22, 2019 · Sorry for unclear answer, I meant that, the line of code where Jest fails on, is part of react-navigation-tabs library, not my code; But where my code, needs and imports it, there is not any issues with jest, so, Jest does work in my files but fails on the sub-libraries (I can not just remove all my usages of external libraries, specially this one is required for the tabs of the application) Nov 16, 2019 · 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 Use the <rootDir> string token to include the path to your project's root directory to prevent it from accidentally ignoring all of your files in different environments that may have different root directories. <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 . Add this line inside the transform object: '^. Try Teams for free Explore Teams Feb 23, 2021 · To put this in different terms, I'm using Jest to test a package with "modern" JavaScript, which in-turn imports another package with "modern" JavaScript. /setup. /simple'; export jsonServerRestClient from '. The problem being faced is related to the configuration of Jest, a popular JavaScript testing framework. <anonymous> (src\components\category-tree\category-tree. And Jest doesn't like it. 38. May 1, 2023 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. So to be clear, I've followed the instructions to include 2 lines in my setup file, AND included the transformIgnorePatterns you suggested. 6. By making it "^uuid$" this started working for me. Jan 19, 2021 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. js-react module but is throwing different import/export unexpected token errors during the t Jul 3, 2018 · Thank @mattyclarkson for the investigation. In this project i'm not using babel. Jest: SyntaxError: Unexpected token export. js' so your jest. When I run Jest, it complains about an unexpected token export (React-Navigation), pointing withNavigation. 13. Dec 29, 2019 · I am building an expo react-native app with expo SDK 36. May 7, 2024 · In my react native app project, i'm trying to run a test on the login page screen, test only the rendering of the elements in it. js:1] 1 how to mock autofocus prop of a child textInput in ReactNative Mar 14, 2019 · You signed in with another tab or window. Thank you! I'm assuming the reason this works is because it's working around the build-time loader and using an ES6 friendly loader, next/dynamic. here is the commit in react-native that made that change from react-native 0. Apr 26, 2022 · SyntaxError: Unexpected token 'export' When using react-markdown in the latest version of create-react-app I can no longer run jest due to the following error: It all works fine when I remove react-markdown. 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. Mar 8, 2017 · React Native Syntax Error: Unexpected Token, expected } Ask Question Asked 8 years ago. js:1] 95 Importing images breaks jest test Jul 7, 2022 · testing React Native Application with Jest - Jest encountered an unexpected token 12 SyntaxError: Unexpected identifier jest & babel 7 & react-native 0. Unexpected token 'export' There seems to be an issue with configuration that prevents React Native Testing Library from working correctly. SEE EPISODES May 6, 2021 · @Elango for the answer in stackoverflow I already had it in package. /src/styles into the build command. Here is some quick info I can give you know: First of all, when you try something else, be sure to run jest --clearCache to ensure jest will run with the new settings/packages. Feb 23, 2021 · If you Google "jest unexpected token", there are several signs that this is a really nasty issue: There are a great many threads on the issue - on Stack Overflow and otherwise. Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. Feb 20, 2023 · What I am trying to achieve is in my packages/app directory to have common pages or components that are reused for web and native. So the final fix was: Update the imports Mar 14, 2019 · @krizzu, no help, at least, with the "Jest setup file" option. Aug 2, 2022 · I was using a jest. babel-preset-env replaces es2015, es2016, es2017, latest. This is the test I'm running: import { render, screen } from '@testing-library/react' import { toBeInTheDocument } from '@testing-library/jest-dom' i Jan 25, 2017 · I am now using React Jest to test code. <anonymous> (src\components\category\category. Now I want to test multiple components together, and I immedia Mar 17, 2020 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. The difference is that expo may have some compatibility issues with some libraries and expo install gets the version that it's compatible with as opposed to the latest one Jan 9, 2017 · I'm working on react-native for. Jan 18, 2020 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. This tool is designed to provide a more integrated debugging experience for React Native applications. I had an issue in which my unit tests were running just fine on my machine but failing on jenkins, your solution caused jest to give me a warning saying that globals are deprecated and then the tests took forever, I removed the globals and ended up with: Aug 9, 2023 · Ask questions, find answers and collaborate at work with Stack Overflow for Teams. js (make sure that's a lowercase "J" btw), perhaps try tweaking the import syntax for you mock file? So rather than . exports = { env: { test: { presets: [ [ '@babel/preset-env', { modules: 'commonjs', debug: false } ], '@babel/preset-flow', '@babel/preset-react' ], plugins This ended up helping me import @microsoft/mgt-react into a Next Js v12 project. js looks like this: Jun 12, 2018 · I have a Login screen. However, it always shows me the same Syntax Error: Unexpected Token. It’s fast, flexible, and easy to use. RN 74 -> 77. json probably contains: Marcus Greenwood Hatch, established in 2011 by Marcus Greenwood, has evolved significantly over the years. Jan 31, 2019 · I ran into a similar situation where I wanted to test a React component . js:1] 5 TypeScript Property 'navigation' is missing in type but required in type 'Props' React Native Jun 16, 2018 · I am running jest test in react native and it fails giving "SyntaxError: Unexpected token import" Here is my trimmer import code: - import React, { Component } from 'react'; import { Container, Jan 25, 2023 · Problem solution for SyntaxError: Unexpected token export when running jest in react-native-picker Picker. json (in my case - react-native-svg) installing those deps NOT through npm install , but through expo install . Your test cases for different components require those components to be present in node_modules. . Based on this, on latest configurations you must use/replace your Plugins/Preset of es2015 and any esX to the new one: env. js if people are using TypeScript and Tamagui // usefull to share ts config with `import { Stuff } from Jan 23, 2015 · However, when I tried to put my JS in a separate file, I started getting this error: "Uncaught SyntaxError: Unexpected token <". The repo seems pretty stale and I didn't bother asking them to fix their dist folder to be es5 compatible. Component { ^^^^^ SyntaxError: Unexpected token export at transformAndBuildScript (node_modules\jest-runtime\build\transform. The problem is a component that uses withNavigation from React-Navigation. css stylesheet. DOM */ to the top of the JS file, but it didn't fix anything. i tried to run basic component and its working well. This happens e. I have made my Jest performing platform agnostic tests by using React Native and React Testing libraries depending on what platform the tests are running (IOS,Android, Web). I tried adding /** @jsx React. Dec 26, 2023 · Marcus Greenwood Hatch, established in 2011 by Marcus Greenwood, has evolved significantly over the years. 0. In the code below, I can't figure out what the unexpected token is. I have issues with Jest picking up an internal library, Jest would display 'unexpected token' errors wherever I had my imports from this library. Feb 9, 2024 · I ended up finding the solution I had to add the library to the transformIgnorePatterns. React-native jest test giving unexpected Jan 30, 2022 · SyntaxError: Unexpected token 'export' See this guide for example to get more info about ES modules. Mar 13, 2023 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Jun 15, 2024 · Jest encountered an unexpected token Jest failed to parse a file. js. Jest failed to parse a file. +\\. js my setupFiles in in jest. Aug 22, 2022 · removing deps that were causing the issue from package. Jan 14, 2021 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Tips for Avoiding the Jest SyntaxError: Unexpected Token ‘export’ In addition to the tips above, here are a few additional tips for avoiding the Jest SyntaxError: Unexpected Token ‘export’: May 31, 2023 · The moduleNameMapper and transformIgnorePatterns solutions both solved the issue for me, also each one slowing the tests down like the authors mentioned. You signed out in another tab or window. svg$': '. 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). Viewed 15k times Part of Mobile Aug 10, 2024 · Jest encountered an unexpected token Jest failed to parse a file. I was using Babel with Webpack. I'm attempting to use jest (v19. js, and the last one was close but I was still missing one important thing the imports. /types'; For those using earlier babel versions, simply use the commonjs module. Aug 1, 2022 · Add a transform for js which uses babel-jest-- Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' Update my tsconfig to output commonJS modules Update my tsconfig to allowJs:true and update my jest transforms to parse JS with ts-jest Sep 16, 2022 · This could be a temporary workaround until babel configs are fixed. This isn't one of those issues where a Dec 23, 2020 · but Jest doesn't like it and throws a SyntaxError: Unexpected token 'export' I tried different things, like play around with . js file with jest, but it was failing because the component imported a . Marcus, a seasoned developer, brought a rich background in developing both B2B and consumer software for a diverse range of organizations, including hedge funds and web agencies. May 25, 2022 · I too encountered this when using react-markdown v9. Sep 25, 2019 · I have a test for a test for a TSX file written in a JSX file which fails to run due to unexpected token: Test suite failed to run Jest encountered an unexpected token This usually means Jan 25, 2024 · i made that change because the react-native upgrade helper told me to do so. Feb 3, 2022 · Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. js docs, but still same issue. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". 72. Oct 17, 2017 · You need to edit your jest. You switched accounts on another tab or window. Asking for help, clarification, or responding to other answers. x of jest so I think since I'm just now upgrading from 27. js:1 ({"Object. js:5 export default class FaAngleDown extends React. that's why by default jest doesn't transform node_modules. json when using create-react-app. wpjvd wrgz urvn fstml ozw ithqs iurbn xwc fxfncde qyeq nthdqru hoh gyfa sjpg jjut