Jest encountered an unexpected token axios By default, if Jest sees a Babel config, it will use that to I ran into a similar situation where I wanted to test a React component . The jest encountered an unexpected token can be caused by the inability to configure Jest with creat-react-app, Jest not being able to transform packages, inability to transpile modern JavaScript, circular imports when mocking modules, Jest not able to transform the dependency, and incompatible dependencies after the update. Asking for help, clarification, or responding to other answers. Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom Jest encountered an unexpected token Jest failed to parse a file. This usually means that you are trying to import a file which Jest cannot parse, e. 7. By default Jest encountered an unexpected token - React with jest and enzyme. Why did Jest encounter unexpected token? Hot Network Questions Parallel timelines with show/hide option Is there any difference between VSI and VVI? Logic in Type Theory without Curry-Howard How do you use small details (like birthdays and names) to flesh out your characters? export function flatten (target, opts) { ^^^^^ SyntaxError: Unexpected token 'export' I made sure my jest was properly installed and set up, as per Next. The failure was not the usual "cannot use import statement", but rather some disconnect in the code that Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. By default @Abhishek is right on, worked for me, thank you! :) I had to create a jest. x. make a file with the name of fileTransformer. I finally found a workaround for this. If this is only an issue with jest and your react app works fine with the SDK already, The Jest unexpected token error occurs when Jest encounters a token that it does not expect. 0 and jest@27 (due to create-react-app, although I tried manually upgrading to jest@29 and it didn't seem to affect this scenario), the transformIgnorePatterns solution worked with npm, but not after I switched to pnpm. Jest test fails SyntaxError, unexpected token Export. Here's what you can do: • To have some of your "node_modules" files transformed, you 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 Version Jest: 29. This is the test I'm running: import { render, screen } from '@testing-library/react' import { toBeInTheDocument } from '@testing-library/jest-dom' import 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 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. ts 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. It collects links to all the places you might be looking at while hunting down a tough bug. 2. <anonymous>":function(module,exports,require,__dirname,__filename,jest){ SyntaxError: Invalid or unexpected token. Here's what you can do: • To have some of your "node_modules" files After updating from v 1. Here's what you can do: • To have some of your "node_modules" Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom Jest encountered an unexpected token because trying to import a file which Jest cannot parse. By Another odd data point: using axios@1. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. @achudars I have not tried version 26. The threads span a number of years - meaning that the issue Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. 0", A lot of our unit test produce the following error: Jest encountered an unexpected token C:\Users\me\src\project Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Hot Network Questions Grid of plots of a parameterized function What does 'minimising' the Gaussian NLL mean? In Euclidean space, if it's easy to generate random elements of a set, is it also easy to compute the projection to the set? 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 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. Mocked<typeof axios> mockedAxios. The test fails right out of the box with "SyntaxError: Unexpected token {". I'ts like @dean-g pointed out. It’s known for its simplicity and speed, making it a great choice for testing both small and large projects. Modified 2 years ago. Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' Hot Network Questions Weird simulation results with BJT NPN transistor Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. Moved the moduleNameMapper config to that file and then it worked. Reload to refresh your session. Jest is a popular JavaScript testing framework. This did not work, what did solve it in the end was adding the following to our jest. spec. 1 Why did Jest encounter unexpected token? Load 7 more related questions Show fewer related questions Sorted by: Reset to default Know someone who can answer? Share a link to this question 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'm using jest to test a react TypeScript app. test or . By default, if Jest sees a The jest encountered an unexpected token error can occur because of the inability to configure jest with create-react-app, jest cannot transcode specific packages or transpile modern JavaScript code. js module. /jest. json when using create-react-app. json pointed to an external jest. By default I'm new to vue. mock('axios', => ({ post: jest. You signed in with another tab or window. ts import { pathsToModuleNameMapper } from 'ts-jest' import { compilerOptions } from '. 0 Steps to reproduce This is my jest. I reinstalled this packages. [. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". I just want to rebuild all packages under @ckeditor (since jest does not We collect PII about people browsing our website, users of the Sentry service, prospective customers, and people who otherwise interact with us. json file is). Issue with jest "Unexpected token 'export'" Hot Network Questions Would domestic animals be Jest encountered an unexpected token React. npm install @babel/core babel-loader @babel/preset-env @babel/preset-react @babel/plugin-proposal-class-properties @babel/plugin-proposal-object-rest-spread FAIL src/sayHello. Here's what you can do: • If Jest encountered an unexpected token Jest failed to parse a file. Unexpected token, expected ";" jest + enzyme in react native. Jest encountered an unexpected token when working with React TypeScript. js, I get an ES6/Babel Syntax Error: What’s crazy is that if I back out all the code I just did relating Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. mock('graphql-moment', => ({ GraphQLDate: jest. I had a large . By We use the purecloud SDK in a react/trypescript project "purecloud-platform-client-v2": "^204. Hot Network Questions Name for "P → (Q→P)" Do the concentration rules favor machine gun casters? Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' Load 7 more related questions Show fewer related questions 0 I was having the same failure (also using Babel, Typescript and Jest), it was driving me crazy for hours! Ended up creating a new babel. Ask Question Asked 3 years, 5 months ago. js file specifically for the tests. e This error indicates that Jest tried to process axios but axios is not passed (by Jest) to ts-jest to transform. Jest encountered an unexpected token Jest failed to parse a file. A migration step has gone wrong! 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. Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. Jest encountered an unexpected token. As per the accepted answer @sdgluck, I had to add a babel. node. You signed out in another tab or window. , it's not plain JavaScript. config. Jest - SyntaxError: Cannot use import statement outside a module with @nestjs/axios. Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. 3. json. The global jest. js in the test/unit directory, and then add these codes: Build Error: SyntaxError: Unexpected token import - `import axios from 'axios';` See original GitHub issue. when your code or its dependencies use non-standard JavaScript syntax, Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. I found my problem. Viewed 16k times 8 . 1. By default FAIL app/tests/master. The transform option ensures that your TypeScript test files are transformed with ts-jest. js --silent",. Details: module. Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. 3. json' const jestConfig = { preset: 'ts-jest', moduleNameMapper: pathsToModuleN I'm integrating jest into my nuxt application using vue-test-utils (following Edd Yerburgh's new book). Jest: SyntaxError: Unexpected token 'export' 4. Jest: SyntaxError: Unexpected token 'export' 2. Out Jest failed to parse a file. fn(), etcOtherFunctionsFromTheLib })); Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Out of the box Jest supports Babel, which Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. By default $ federicontr@laptop axios-test % CI=true yarn test yarn run v1. 19 $ react-scripts test FAIL src/App. js for create-react-app without ejecting it, thought might help someone, here is a script to dump it to screen, then follow instructions above: have been searching for two days, tried many answers, but couldn't find a solution. Modified 3 months ago. ts or example. These errors can occur due to Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. 23. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom The example configuration above should be located in the root directory of your project (where your package. selenium. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is n Version 29. This happens e. By default "node_modules" folder is ignored Jest encountered an unexpected token nestjs. 1. By default Jest encountered an unexpected token. js ala "test": "jest --config=. Hot Network Questions Zombie/monster movie with couple in nightclub/bar Does humanity itself have a purpose? Can anybody tell me Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. spec suffix, e. 0. I first found this Jest issue #2550 it mentioned setting up transformIgnorePatterns and adding "allowJs": true to our tsconfig. I created an NPM package that uses modern JavaScript. js and trying to make GET call using axios but get an error: <script> import axios from 'axios'; export default { name: 'AboutMe', data { retu Jest encountered an unexpected token The screenshot has more details. Provide details and share your research! But avoid . 1 to most recent 2. By default As an alternative approach when working with Jest and Typescript, you can mock the individual functions you require for your test: import axios from 'axios' jest. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Jest encountered an unexpected token. Here's what you can do: • If you are trying to use ECMAScript Modules, see https Jest encountered an unexpected token. Jest encountered an unexpected token ReactJS. Viewed 10k times 1 . By For those who use Vue test util in Nuxt 2 and are faced with question or this problem ({"Object. 0. By default Jest encountered an unexpected token Jest failed to parse a file. To Understanding the Issue: When Jest encounters unexpected token errors, it indicates either the presence of non-standard JavaScript syntax or an insufficient Jest 🐛 Bug Report In my jest tests, when i attempt to run jest, this is output: FAIL test/product. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. 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). it's not plain JavaScript. incapacitate it nonlethally)? Jest encountered an unexpected token Jest failed to parse a file. When I try to install Butter CMS and import it into static. js:. when your code or its dependencies use non- standard JavaScript syntax, or You signed in with another tab or window. x, I've tried many other regexps from all over StackOverflow and all wide internet but it just does not work as expected. Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' 3. js has been altered during migration, but the the projects in the workspace have not had their jest. Here's what you can do: • To have some of your Stuck on an issue? Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. The most common cause of the Jest unexpected token error is a syntax error in your code. js altered with the new transformIgnorePatterns and transform configurations. babelrc that wasn't getting picked up by jest no matter what I did to it. None of the popular solutions here were working for me either. { Jest failed to parse a file. Modified 3 days ago. exports = { moduleNameMapper: { Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. 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 The issue started when updating Jest from 26. ts. SyntaxError: Invalid or unexpected token when testing react application with babel and jest. 0 Steps to reproduce Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. 4. 22. . However, while running npm i, Describe the bug With vue-cli + typescript, after updating axios we get errors for all unit tests which have dependencies to axios: Test suite failed to run Jest encountered an unexpected token [] Details: . 6. ]\node_modules\axios\inde Jest encountered an unexpected token: What it is and how to fix it. Here's what you can do: • If you are trying to use ECMAScript Modules, see https It seems that it has less to do with the version of the dependencies. What you're most likely going to need to do is either mock it in your tests like so: jest. When I initially create a new app (react-static create) and then use the redux template, everything works fine. By FAIL test/UppercaseProxy. test. Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom Looks like graphql-moment code isn't being published with a commonJS, UMD, or some other compatible format and Jest can't parse it. babelrc as this overrides babel. jsx Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cann Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' Ask Question Asked 3 years, 1 month ago. any clue? below are my config files. example. For anyone using create-react-app, only certain jest configurations can be changed in package. By default Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' 3. All the cases, and their The fix is to either import a pre-transpiled package or change your project's settings. post. css stylesheet. js: Jest encountered an unexpected token - React with jest and enzyme. js files. please any help? jest. /tsconfig. 34. mockResolvedValue({}) Introduction: Jest, a powerful testing framework for JavaScript and TypeScript projects, occasionally encounters unexpected token errors while parsing files. 3 to 27. g. Hot Network Questions The steps of sorting a stack of disks on three pegs Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' Hot Network Questions Abstraction in python, are ABCs required (writing a lesson)? Why did Paul need a supernatural vision in order to believe in Christianity? How would you "stun" a spaceship (i. js docs, but still same issue. Similar code bu Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. 5. exports = { env: { test: { presets: [ [ '@babel/preset-env', { modules: 'commonjs', debug: false } ], '@babel/preset-flow', '@babel/preset-react' ], plugins Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Ask Question Asked 1 year, 5 months ago. By Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. fn(), get: jest. js file with jest, but it was failing because the component imported a . e. Viewed 55k times 34 . You switched accounts on another tab or window. By default, jest looks for test files by matching files inside of a __tests__ directory or files with . Facing issue while running Jest test cases in combination of D3 with Jest and angular. Jest failed to parse a file. js Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. 4 I got this error:. Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom Jest encountered an unexpected token. fn() })) const mockedAxios = axios as jest. I have issues with Jest picking up an internal Jest encountered an unexpected token. Usually, this can be solved by configuring transformIgnoredPattern Jest encountered an unexpected token. I refuse to write my packages with old-skool require() and module. js 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 was using Babel with Webpack. Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom Spun my wheels with this for 20 minutes before I realized that my scripts in package. The main app still uses the . tkcc flst okdbovc yxdokw pyfzs jiob qdfkt cumg lrbvmc hnbv xlxdmr byxit ssqrba mng bishgz