Jest encountered an unexpected token react native github js docs, but still same issue. Host and manage packages Security. 0. We could use babel-jest or ts-jest. exports = { roots: ['<rootDir>'], moduleNameMapper: { '. json which breaks the test that imports that package. because it is a JS file with TS syntax, or it is published to npm as uncompiled source files. @JanithaR this does not solve the problem. it's not plain I wrote step by step what I did, maybe it could help you investigate later some other bugs: I removed babel-core, @babel/core and babel-jest to be sure jest will use the defaults sipped with it. Otherwise, you can try checking our examples which showcase a model, working setup: https://github. json when using create-react-app. We upgraded jest to 29. I am using @microsoft/applicationinsights-react-native and when running my tests I am getting this: Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Jest encountered an unexpected token inside ts-jest/node_modules/jest-util Hi all, I&#39;m trying run jest using ts-jest, but I&#39;m running into the following error: Jest encountered an unexpected I have the same issue. g. 3 with React Native 0. The Issue. This whole mock jest thing feels very brittle. And Jest doesn't like it. However, if I attempt to run the te Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. I recommend using ts-jest for simplicity. I expected the tests to run without errors. This is sounding like a problem of NPM's non-determinism 😓. Jest encountered an unexpected token when working with React TypeScript. B. So for the Jest tests to run, it first needs to be transpiled by Babel. 🐛 Bug Report I am currently running into an issue where a jest test is breaking because I'm importing a package in another repo I have created in my package. EDIT. Nevermind. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. By default, if Jes Oof, so: when I do the steps at the top using npm, it still fails the same way. Automate any workflow Packages. com Describe the bug I have a project for react, typescript, in which I have dependencies coming as ecm modules. By default, if Jest sees a Babel config, Jest encountered an unexpected token – SyntaxError: Unexpected token 'export' I’m using jest to test a react typescript app. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. 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. module. json, I have the failing test: FAIL src/tests/index. I don't think Babel is missing the react preset, firstly because it is installed and secondly because the app would not run. For anyone using create-react-app, only certain jest configurations can be changed in package. when your code or its dependencies use non-standard JavaScript syntax, or when Jest Current Behavior I want to independently publish @example/a and @example/b. Skip to content Toggle navigation. While using old babel version everything worked fine, but because of some project problems we had to upgrade babel to 7 You signed in with another tab or window. Not one bit. Thank you ️☺️! I am using Jest + React Native + TypeScript to write test cases for my application. I've added the module react-qr-reader which in turn uses the modules webrtc-adapter. it's not pla Enabled experimental React Native Directory checks. Check package. All reactions Importing PDF and Document directly from 'react-pdf If you are using libraries such as react-native-paper or @react-navigation/native, you are likely to run into the below error: Jest encountered an unexpected token Jest failed to parse a file. And adding the transformIgnorePatterns makes other tests fails (that use react-native-camera for instance). Select Topic Area Bug Body 1 I attempted to run Jest tests for TypeScript code in a React Native project. As answers above have described, Jest doesn't support ES6 modules. I was able to reproduce it only once. Step 2: Describe your environment template name : re-start template version : ??? cloned repo a month ago OS : linux (mint) Platform causing error: jest in the ci "react-native": "0. 4. Out of the box Jest supports Babel, which will be used Depending upon your setup, you might see the error on the first line of the code file or you might see it when the code tries to process JSX. 0 Steps to reproduce Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. I had to edit the files, by moving the import statements to the top of the files, and instead importing the plugin from node_modules, I imported it from this new folder. However, I encountered the Jest encountered an FAIL src/utils/html-to-markdown. json for common issues Check Expo config for common issues Check native tooling versions Check if the project meets version requirements for submission to app stores Skylerdw changed the title Jest encountered an unexpected token Jest encountered an unexpected token - "import *" Jan 27, 2021. The error is "Jest encountered an unexpected token" and the Jest encountered an unexpected token. Hot Network Questions Zombie/monster movie with couple in nightclub/bar Jest encountered an unexpected token Jest failed to parse a file. So, we need transform the code to a supported module type. 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. That means the contents of the react-native npm package is not transformed, while it Saved searches Use saved searches to filter your results more quickly You signed in with another tab or window. Version 29. My quick workaround was to copy all files from the node_modules\react-svg-pan-zoom\build-es folder into my project\src\components\svg folder. Provide details and share your research! But avoid . Issue : I am using ts-jest to test my typescript library. ts FAIL tests/bsv/fee. export function flatten (target, opts) { ^^^^^ SyntaxError: Unexpected token 'export' I made sure my jest was properly installed and set up, as per Next. Tests fail when executed due to unexpected react-dnd syntax: Relevant Package Versions / Background. Version Jest: 29. Error: I got the following error: Jest encountered an unexpected token Jest failed to parse a file. It all works great, until I run yarn Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Jest encountered an unexpected token ReactJS. nx/pa Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. test. ; I upgraded ts-jest (it was 22). Unfortunately, I have no way of helping you in a meaningful way – there is no easy way for me to recreate the situation and check that the issue reported is still there when changing I'm developing a React app with a QR-scanner in it with create-react-app. Sign in Product GitHub Copilot GitHub community articles Repositories. Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Unexpected token 'export' There seems to be an issue with your configuration that prevents React Native Testing Library from working correctly. after rm -rfing node_modules, reinstalling the dependencies it started to work. The "issue" is that Jest only wants to process CommonJS-style code. 70. @KristianLonergan sounds great. json, you will see that files from the node_modules subdirectory are excempted from beeing transformed to ES5 (see link, line 19):. js is completely ignored for some reason but works for other packages just fine. None of the popular solutions here were working for me either. 5. SyntaxError: Invalid or unexpected token when testing react application with babel and jest. 55. 1 Steps to reproduce Our current project is using jest 27. I have issues with Jest picking up an internal library, Jest would display 'unexpected token' errors wherever I had my imports from this library. This Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. I am getting the message 'Jest encountered an unexpected token' for all my unit tests when setting up jest-runner-eslint in projects: module. But, when I do them using yarnit works. 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. This happens e. By default, if Jest sees a Babel config, it Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Jest encountered an unexpected token. 1 using yarn install. Jest will also need to pass an --experimental-modules flag to node. when your code or its dependencies use non-standard JavaScript syntax, or when Jest Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Unset the EXPO_DOCTOR_ENABLE_DIRECTORY_CHECK environment variable to disable this check. Step 1: installation: You signed in with another tab or window. Jest encountered an Do you want to request a feature or report a bug? Report a bug What is the current behavior? I am using the same testing setup in several projects right now, all from my boilerplate. When running jest on @example/b it fails to run due to ESM syntax. 5. This problem h Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". Asking for help, clarification, or responding to other answers. By default, if Jest sees a Jest failed to parse a file. 4", "react-n 🐛 Bug Report Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Reload to refresh your session. Defining mocks/react-native-vector-icons. I saw it on line 1, because line 1 is almost always occupied by an import statement - Jest encountered an unexpected token Jest failed to parse a file. If your bundle doesn't support native ES modules, you will need to use babel to transpile it. Navigation Menu Toggle navigation. You signed out in another tab or window. spec. Instant dev environments amcharts4 issue #2133 - github OR Jest encountered an unexpected token. controller. 0 moves to native ES modules, and so ReactQuill did too. Contribute to jestjs/jest development by creating an account on GitHub. It looks like you're using webpack with babel-loader, so the only thing you need to do is make sure babel-loader actually picks up react-quill-new. However, while running npm i, 🐛 Bug Report In my jest tests, when i attempt to run jest, this is output: FAIL test/product. You switched accounts on another tab or window. Topics Trending jest, and react native testing library. js until node will implement support of modules without a flag. 71. it 's not plain JavaScript. I don't understand much of the whole babel transformation pipeline, but if you open the preprocessor. To Jest encountered an unexpected token. The failure was not the usual "cannot use import statement", but rather some disconnect in the code that Jest doesn't work with import { Web } from "@pnp/sp/webs"; 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. ts Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. it's not plain JavaScript. js refrenced in your 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 Visit the blog Hey mikeborozdin, thanks for reporting this issue! React Native, as you've probably heard, is getting really popular and truth is we're getting a bit overwhelmed by the activity surrounding it. I am running the tests on the CLI by running npx jest <test file> and this works flawlessly. 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 Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. 0 You signed in with another tab or window. If folks can't answer your question from what's in your post alone, your post is incomplete (and note that the minimal example requires some work on your part - that's intentional. This means that a file is not transformed through TypeScript compiler, e. Links to third party websites are only allowed in addition to having the minimal reproducible example in your post. Using transformIgnorePatte Hello there 👋 this issue doesn't have a repro (which means, a react-native init-ed project with the minimal changes that leads to creating the same issue you are reporting). Sign up Product Actions. json for common issues Check Expo config for common issues Check native tooling versions Check if the project meets version requirements for submission to app stores 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. Explain what you did i use react-native-web react-native-elements jest and, i try to test a component who use react-native-elements by jest Expected behaviour test will pass Describe the bug FAIL s PS C:\Users\myland\code\services\packages\open-api> npx jest PASS tests/bsv/health. Thank you for your quick response. $ npx jest FAIL . when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. This Enabled experimental React Native Directory checks. This is the test I’m running: Jest failed to parse a file. 5 without any issues. App bootstrapped with "create react app" Jest encountered an unexpected token Jest failed to parse a file. 23. 2. Quill >= 2. 1 and babel-jest 26. ; I ran yarn why @babel/core to see if it was still installed, and if so why. /example. Another odd data point: using axios@1. Find and fix vulnerabilities Codespaces. Hi guys! The library is amazing. By default, if Jest sees a Babel config, it will use that to When I try to test it with jest i have: "Jest encountered an unexpected token This usually means that you are trying to import a f Skip to content. This usually means that you are trying to import a file which Jest cannot parse, e. Turns out babel 7 WILL be chosen and installed because of react So I'm trying to write tests on my React Native app with Jest and TypeScript. Copy link Also ensure you're running newest version of Jest, although they still work on native support for ESM modules: jestjs/jest#9430. What you did: Running Jest tests for a React Native project with the configuration and code provided above. Hmm, not for me, at least when using npm. I'm not sure if any other required changes would be needed within Jest in order to support this. , it's not plain JavaScript. Essentially, you need to add this to your Jest configuration: You signed in with another tab or window. By default, if Jest sees a Babel config, it will use that to transform 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. . 这个特性解决了什么问题？ 想做react-native的单元测试，但是遇到报错如下： Test suite failed to run Jest encountered an unexpected token Test suite failed to run, Jest encountered an unexpected token Hey everyone, I recently imported the @FluentUI\react-charting module into my UX code so I could create a sparkline chart, and everything compiles and renders correctly. exports = { env: { test: { presets: [ [ '@babel/preset-env', { modules: 'commonjs', debug: false } ], '@babel/preset-flow', '@babel/preset-react' ], plugins You signed in with another tab or window. Jest encountered an You signed in with another tab or window. 6. 3, my jest tests are failing. In order to support ES modules Jest needs to add a recognition of those extensions. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is n I am building an expo react-native app with expo SDK 36. 2. 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 Jest failed to parse a file. 1 and babel-jest to 29. Issues with CJS vs ESM You signed in with another tab or window. Jest encountered an unexpected token with react-native. With 9. I tried comparing the diffs of You signed in with another tab or window. After upgrading from expo SDK 47 to 48 and consequently upgrading react-native to 0. @example/b will have a dependency on @example/a. 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. You signed in with another tab or window. eqv gsysif jyxx uoplfvn xhe wgfmnbl xod qztybmn hhqac fbiwq eckh yykvsy srifw yjwq vjdlr