Syntaxerror unexpected token jest react Apr 3, 2018 · I am unsure whether your step will not get you stuck in near future. Jest - Unexpected token import Jest SyntaxError: Unexpected token < 1. Reload to refresh your session. Jest: Test suite failed to run, Unexpected token = 4. from 'react Dec 25, 2020 · 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 Jan 19, 2021 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Oct 29, 2019 · data-jest-file-name: The name of the file (e. Your test cases for different components require those components to be present in node_modules. import { device } from 'detox'; import { Sep 30, 2020 · [React]Jest SyntaxError: Unexpected token import. . Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. In my jest. js it does the trick. SyntaxError: Unexpected token '. When I run jest, I get the following error: Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. js modules/ user/ index. Dec 27, 2022 · I was using jest 27, which works fine now. You cannot override the moduleNameMapper in package. js:1] 5 TypeScript Property 'navigation' is missing in type but required in type 'Props' React Native Nov 27, 2020 · React Jest causing "SyntaxError: Unexpected token . json probably contains: 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 29, 2024 · Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. I was using Babel with Webpack. tests failing with Jan 25, 2016 · I have the same issue. js:1] 95 Importing images breaks jest test Dec 21, 2023 · Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. Your components should be corrected as follows. I follow the instructions on the Jest site, but for some reason I get: SyntaxError: Unexpected token < I can test See full list on dev. Jan 18, 2020 · SyntaxError: Unexpected token export. Mar 1, 2023 · I have implemented detox for my react native app. Having trouble running Jest tests: `SyntaxError: Unexpected token <` 5 Dec 4, 2018 · When jest configured with "babel-jest": "^23. May 21, 2023 · In this post we are going to learn NextJS 15 by creating an awesome web-app. js:1] 95 Importing images breaks jest test 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. I don't understand much of the whole babel transformation pipeline, but if you open the preprocessor. 2. Apologies in advance if I've overlooked something. css stylesheet. Aug 26, 2022 · 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 Aug 26, 2022 · 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 Aug 2, 2022 · I was using a jest. This is the test I'm running: import { render, screen } from '@testing-library/react' import { toBeInTheDocument } from '@testing-library/jest-dom' i Oct 17, 2017 · You need to edit your jest. This can be also occurs when you are not configure your babel react presets in order to compile your JSX. I am having his message when importing a file. For the react components, you have to use pascal case. This post have been inspired by this YouTube video by… Apr 14, 2023 · Fix the common Uncaught SyntaxError: Unexpected Token < in React with our step-by-step guide. SyntaxError: Unexpected token ( for jest. How to solve syntax error, unexpected token, export type? 0 Mar 14, 2019 · jyurek changed the title Jest encountered an unexpected token Jest encountered an unexpected token: "SyntaxError: jest docs for how to use jest with react-native Jan 14, 2021 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. ' Sep 6, 2017 · Things change quickly in the js world. However, it always shows me the same Syntax Error: Unexpected Token. create-react-app & jest — SyntaxError: Unexpected token import. (react uncaught syntaxerror: unexpected token <) Feb 22, 2018 · It may work who use create-react-app from feb 2018. Sep 13, 2019 · jest: Test suite failed to run, Jest encountered an unexpected token - typescript react. Jest gives an error: "SyntaxError: Unexpected token export" 64. Ask Question Asked 6 years, 11 months ago. Unfortunately i havent found any docs about why it does but here is my answer. Here are a few ways I have seen, assume the package is being used @fullcalendar: Use a customized package react app customize-cra: May 21, 2023 · 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 that Jul 9, 2019 · Trying to set up Jest to test my React components (Technically I'm using Preact) but same idea Anytime I try to get a coverage report, I get errors when it hits any jsx syntax. my node version is v16. ) Jan 31, 2019 · I ran into a similar situation where I wanted to test a React component . 10. 5. Jan 16, 2023 · I've been able to test ts files but as soon as I attempt to write a test for tsx files I get the error: const rendered = (0, _reactTestRenderer. Mar 15, 2022 · I know several variations of this question have been asked. js will look like this: It's SyntaxError: Unexpected Identifier, and it points to Enzyme on one machine, or import on the other Jest encountered an unexpected token - React with jest and I figured it out. Try Teams for free Explore Teams Mar 14, 2019 · @krizzu, no help, at least, with the "Jest setup file" option. Provide details and share your research! But avoid …. I have tried several examples of adding --transformIgnorePattern but this does not seem to fix the problem. Jest encountered an unexpected token React. When I press on a blue Text, I want it to navigate to the Register screen. g. By default jest doesn't transform ES6 js code from node_modules. Jun 28, 2019 · I'm want to test a component in a React app using Jest Enzyme with TypeScript. In my case, the package react-navigation module need to be translated. it's May 10, 2022 · React Jest tests fails with react-dnd: SyntaxError: Unexpected token 'export' Ask Question Asked 2 years, Jest test fails SyntaxError, unexpected token Export. When I run 'yarn test' for my react app, I get the dreaded error: Jest encountered an unexpected token. SyntaxError: Unexpected token 'export'. js:1 Due to these files being minified, I'm not sure where to begin in debugging them. Try upgrading nodejs. Here is my jest. Jan 2, 2018 · I'm trying to setup a jest snapshot test with redux-persist in my react-native project. By configuring this option correctly, we can exclude Jun 17, 2020 · You signed in with another tab or window. I'm getting Unexpected token import when i use ScrollView from react-navigation . Currently, I'm migrating a react project Typescript but to do it as fast as possible and avoid more problems I' Issue : I am using ts-jest to test my typescript library. Try Teams for free Explore Teams Jun 25, 2017 · 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/ Sep 10, 2020 · 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. import React, { Component } Aug 14, 2019 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 1: jest-dom has moved to @testing-library/jest-dom. js file with jest, but it was failing because the component imported a . You signed in with another tab or window. to Dec 24, 2023 · When running Jest tests with tsx (or jsx) React components, you might encounter the "SyntaxError: Unexpected token ''" error like the following: Jest encountered an unexpected token Jest failed to parse a file. My test suits run with no errors until I install this package: fir Jul 16, 2017 · So I have these file and folder. I've doing some reading and people Mar 17, 2020 · [React]Jest SyntaxError: Unexpected token import. " 10. Why did Jest encounter unexpected Sep 6, 2020 · Fix "Jest encountered an unexpected token" with "create-react-app" # jest # testing # react # javascript Here is one of the most popular question which is related to testing with jest for repo setup with create-react-app as I've seen in stackoverflow community. Sep 12, 2020 · Jest doesn't transform node_modules by default, transforming all third-party modules would result in significant overhead and unexpected results. it's not plain JavaScript. import DatabaseController from '. 0. This happens e. Oct 21, 2020 · I can't get my tests to run. 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. (gql|graphql Apr 25, 2019 · I am using Jest to test my react application. 2 SyntaxError: Invalid or unexpected token when testing react application with babel and jest. This usually means that you are trying to import a file which Jest cannot parse, e. I copied the Link component and test directly Dec 28, 2022 · I have just started learning react testing library with jest and created a sample application to mock the server. SyntaxError: Unexpected token. Viewed 153 times 1 . 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) Apr 12, 2020 · Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. Similar question and answer: Azure pipeline npm build failing for React: Unexpected token (This question is dealing with Azure Pipelines, but the root problem is the same and proposed solution applies. Identify and resolve configuration & code issues with ease. I had dev dependencies with needed to be transpiled. 'some-image') data-testid: Same as data-jest-svg-name, but works with @testing-library/react getByTestId() So if you want to find the rendered element in your test by attribute you have to pass in some other attributes. Jest encountered an unexpected token because trying to import a file which Jest cannot parse 6 SyntaxError: Cannot use import statement outside a module React JS Antd Oct 15, 2022 · 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 React Jest causing "SyntaxError: Unexpected token . when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. js list. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your 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. js file in the root directory. Jan 24, 2019 · I'm trying to create a static build of a create-react-app project but I'm getting the following errors: Uncaught SyntaxError: Unexpected token < 1. I tried adding /** @jsx React. " 0. By default Jest will skip to transform any packages in the node_modules. Jest failed to parse a file. Why does it work for some imports and doesn't work for others? SyntaxError: Invalid or unexpected token 26 | PRIVATE_USER_PAGE 27 | } from '. js I have this: const config = { transform: { ". Dec 19, 2022 · This problem occurs on older versions of nodejs, like your v10, but not newer versions, like v18. 2) w/ my react native (v0. 252. Btw, renderNumbers was defined twice, although it's legal and not the cause of the problem. The code works fine until I import and call "createStackNavigator()". tsx to run my first tests. svg') data-jest-svg-name: Only the name portion of the file (e. When trying to run yarn jest, I get the following error: I have tried removing all package Jan 27, 2017 · Having trouble running Jest tests: `SyntaxError: Unexpected token <` 0. What I did first was start all over: $ jest --init Sep 6, 2020 · The problem is most likely as we install a 3rd party package which is untranspiled. 10 Mar 13, 2023 · As the title says I have been working with next and jest for couple of weeks now but the last days I am facing an issue with jest. So to be clear, I've followed the instructions to include 2 lines in my setup file, AND included the transformIgnorePatterns you suggested. Modified 1 year, 7 months ago. DOM */ to the top of the JS file, but it didn't fix anything. ts file and the quotes kept getting stripped off "uuid" and the fix didn’t work. test. /list'; And in A Oct 30, 2019 · I have a React application (not using Create React App) built using TypeScript, Jest, Webpack, and Babel. /svgTransform. 'some-image. Feb 11, 2019 · For those that travelled this far. UPDATE who use create-react-app from feb 2018. However, I'm trying to use static properties outlined here: https://git Jun 12, 2018 · I have a Login screen. js I have export default (props) => () In index. Jan 27, 2020 · [React]Jest SyntaxError: Unexpected token import. I partially followed the docs jest webpack to make it work. Jan 23, 2015 · However, when I tried to put my JS in a separate file, I started getting this error: "Uncaught SyntaxError: Unexpected token <". 2 Jul 6, 2021 · Current behavior This is a reopening of #9488 I'm running a simple react-native app with typescript template. Jest: unexpected token export with react-navigation. Asking for help, clarification, or responding to other answers. 64. Ask questions, find answers and collaborate at work with Stack Overflow for Teams. But, I haven't been able to find a solution for this particular case. +\\. React Jest - Unexpected token import. ca81c833. There are only 2 tests, one of them renders the . Jest encountered an unexpected token. x of jest so I think since I'm just now upgrading from 27. create)(); ^ SyntaxError: Unexpected token '<' Tes Nov 10, 2022 · Jest encountered an unexpected token React. You switched accounts on another tab or window. Jul 3, 2023 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. The first method works if for some reason you have to import a css file from node_modules directly. [React]Jest SyntaxError: Unexpected token import. Doing some testing of some NodeJS functions using Jest, but it doesn't like import statements, e. js In list. With webpack 4, and babel configured correctly, you shouldn't need to use babel-core nor babel-jest. The problem is happening because jest now looks at the "browser" field in package. 1. Jan 16, 2016 · I'm currently trying to evaluate different testing frameworks that work with React, and it turns out that Jest is on my list. Sep 24, 2019 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Jan 23, 2017 · Shouldn't you use function renderNumbers()?It looks like renderNumbers is not a method of class Counter but an individual function in your code. You signed out in another tab or window. js it works, unfortunately i havent found any docs about this why it does. 0. 14. App. 4. js' so your jest. Jan 17, 2025 · I am having an issue running tests with jest and RTL. Here' s what you can do: I updated some dependencies (react, jest and others), and I also got the error: Jest encountered an unexpected token - SyntaxError: Cannot use import statement outside a module. js:1] 587 How to test the type of a thrown exception in Jest Sep 13, 2023 · Jest encountered an unexpected token Jest failed to parse a file. 7ced8661. js:1 Uncaught SyntaxError: Unexpected token < main. Jan 22, 2022 · I'm using jest to test a react TypeScript app. 0" , it's not working. Jest, Unexpected Token Import. Jest - Unexpected token import. I don't think its an es2015 imports problem as my test code looks something like this: import React from "re I'm attempting to use jest (v19. May 9, 2023 · TS react Jest SyntaxError: Unexpected token '<' Ask Question Asked 1 year, 7 months ago. May 6, 2021 · Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. So I added transformIgnorePatterns to my jest configuration and everything worked: Sep 5, 2018 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. js: 🐛 Bug Report When trying to run tests with Jest in a React app, I get a Jest encountered an unexpected token error. svg$': '. Mar 13, 2023 · Jest encountered an unexpected token. 38. /util/database-controller'. 3. Modified 6 years, React Jest causing "SyntaxError: Unexpected token . I see the problem in jest 28 and above. js refrenced in your package. By making it "^uuid$" this started working for me. " 13. x I'll stick with this solution for now. chunk. Have gone through all the solutions for the o May 16, 2021 · The problem is with the naming convention that you have used for react components. 415. /ac May 1, 2023 · Jest encountered an unexpected token Jest failed to parse a file. 1. it's not pla Feb 9, 2024 · Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. Nov 25, 2020 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. *": "babel-jest";, "^. js:1] How to solve syntax error, unexpected Aug 8, 2017 · Syntax error: unexpected token < in jest. Below you can see a sample test I wrote in that file. After ejecting create-react-app your package. it 's not plain JavaScript. Please uninst Nov 19, 2023 · Ask questions, find answers and collaborate at work with Stack Overflow for Teams. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". 6. My case was module federation shared dependencies caused a legacy package's css not to get picked up. I created dashboard. json, you will see that files from the node_modules subdirectory are excempted from beeing transformed to ES5 (see link, line 19): Apr 26, 2022 · 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. 13. json for jsdom. May 25, 2022 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. config. Just use presets env, react, stage-0 to babelrc. Jan 31, 2023 · Jest encountered an unexpected token Jest failed to parse a file. 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 that you are trying to import a file which Jest cannot parse, e. I am new to react TS jest Having trouble running Jest tests: `SyntaxError: Unexpected token <` 5. Jest encountered an Jun 27, 2023 · Configuring transformIgnorePatterns: To address unexpected token errors in Jest, the transformIgnorePatterns option plays a crucial role. when your code or its dependencies use non-standard JavaScript syntax, or when Jul 18, 2020 · When running my test suite using Jest, I encountered warnings that asked me to update packages: npm WARN deprecated jest-dom@2. js I have export UserList from '. Add this line inside the transform object: '^. json but in jest. Also found out the moduleNameMapper cannot be overriden in package. ruuf aat qxed gsawdn havp rnrnyjy qpnf ixrmcsg fexkndj frjhrc xmtzk rcml thyeb lahx asvqe