Jest import error. By default, if Jest sees a Babel c...

Jest import error. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". 16. 0 I have one test file that contains a simple test written with ESM modules (import). In my configurations ts-jest + jest-puppeteer I added the following transform property to jest. Differences between ESM and CommonJS Most of the differences are explained in Node's documentation, but in addition to the things mentioned there, Jest injects a special variable into all executed files - the jest object. I found the currently best solution is to use babel-plugin-transform-import-meta. " I also have jest configured in eslint env, in case it makes a difference. Learn to configure Jest for React-Native, Angular, and Are you experiencing "Cannot use import statement outside a module jest" in your React project? This guide explains the cause and provides solutions to resolve it. That simple plugin replaces the import. I can get jest to work with typescript for a typescript file on its own, but the moment I try to import my other typescript module, it just doesn't seem to recognise the "import" keyword, despite the keyword being recognised right above the import statement, when I import another file Jest cannot find module: Learn how to troubleshoot and fix the 'jest cannot find module' error with step-by-step instructions and code examples. The underlying issue is that TypeScript (or your Jest config) is not set to one of the module options that allows the import. it's not plain JavaScript. js Jest encountered an unexpected token Jest failed to parse a file. /src/app'; import QuestionService from ". Discover essential fixes for common errors and warnings in the Jest testing framework to streamline your testing process and enhance code quality. Can someone point me in the right direction, please? I can assure you that I was receiving the error "Jest gives an error: "SyntaxError: Unexpected token export"" and the above change worked to remove this error. Here is a test repo I setup (just run yarn && I added nanoid to a package in my monorepo, and a jest test in a downstream package is failing with this error message: Details: /Users/mikehogan/repos/personal TL;DR My Jest test crashes with SyntaxError: Cannot use import statement outside a module because a node_module uses an import statement. The TypeScript jest error "Cannot use import statement outside module" occurswhen we misconfigure jest in a TypeScript project and run test files directlywithout compiling them to JavaScript first. g. js in my . Every time my CI ran, I would get this error, because there was no version controlled jest. My module is using gapi-script package and error is occurred I'm having issues with jest and importing a dependency that's using import I've tried to set transformIgnorePatterns in my jest config but I can't for the life of me figure out a regex path that works. /src The jest. However, I am getting following error Language. To solve the error, transform your test files with ts-jestbefore runningthem. Perhaps it was slower as you mention, but at least the tests worked. Jest Error: How to Fix 'Cannot Find Module' When Importing Components with Absolute Paths As a developer, you’ve likely embraced absolute paths to clean up messy relative imports like . Here's what you can do: I have just started learning jest testing and created a sample application to get familiar with jest testing. Oct 19, 2025 · The "Jest TypeScript SyntaxError: Cannot use import statement outside a module" error can be resolved by properly configuring tsconfig. js: I have problems to run my test suite when I used import * as '. My services and components are written in Typescript. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. json I have a script (following Jest documentation adapted to Windows): " Jest error while trying import file-type ESModule, resulting in error "Cannot use import statement outside a module"? はじめに Jestでテストを動かそうとしたときに『Jest encountered an unexpected token』や『SyntaxError: Cannot use import statement outside a module』のエラーが発生して、毎度初期設定のやり方をググっている気がするので、n番煎じですがざっとまとめることにしました。 Do not import '@jest/globals' outside of the Jest test environment This error seems to have started with babel-jest@^25, and can be resolved by rolling back that package to v21. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. js > jest FAIL __tests__/App-test. But currently, I am having an error: Cannot use import statement outside a module How can i fix this ? I looked here but it does not what i am looking fo Describe the bug When running tests in my project using ES modules, Jest throws the following error: SyntaxError: Cannot use import statement outside a module. Learn step-by-step solutions for common issues with Jest-config, version compatibility, and dependency management. I have just started learning jest testing and created a sample application to get familiar with jest testing. Well cover what the error means, why it happens, and If I use import/export from ES6 then all my Jest tests fail with error: Unexpected reserved word I convert my object under test to use old school IIFE syntax and suddenly my tests pass. I use Nex In this video, we tackle a common issue faced by developers using Jest for testing: the "SyntaxError: Unexpected Token Import" error. . json instead of launching jest directly. All the others imports run without problems so I don't think is a problem with babel configuration. It is the recommended way of launching jest for CRA apps. 8 it is impossible to run tests due to the parsing error: FAIL src/test. Jest encountered an unexpected token Jest failed to parse a file. Here are some key takeaways: Jest cannot use import statements outside of a module because it needs to be able to track the dependencies of each test file. How can I fix this error? 61 You can use either es6 import or require js to import your js files in your jest tests. When using es6 import you should know that jest is trying to resolve all the dependencies and also calls the constructor for the class that you are importing. During this step, you cannot mock it. json and jest. It doesn't work, though. 🐛 Bug Report When using a new "type-only impors/exports" feature introduced in TypeScript 3. I am importing one Learn how to fix the Jest syntax error Cannot use import statement outside a module with this step-by-step guide. This usually means that you are trying to import a file which Jest cannot parse, e. js in my repo. js you posted looks fine, but you most likely have another library/application in your workspace with a jest. env in your code, which is how Vite injects environment variables. meta does work but is unwieldy. Well cover what the error means, why it happens, and Stuck on Jest and Puppeteer import errors? This 2025 guide helps you fix 3 common issues fast, from ES Modules vs. I'm having issues with jest and importing a dependency that's using import I've tried to set transformIgnorePatterns in my jest config but I can't for the life of me figure out a regex path that works. js where |mjs is still missing Takanori Ishikawaさんのスクラップ I'm trying to write a simple jest test for a 3rd party package were using that only exports an ES module. 原因 外部ライブラリはESModuleで提供されていた いわゆる import/export できるやつ JestはNode上でテストを実行するため、Webpackでビルドする場合とはESModuleの扱い方が違う TypeScript案件だったのでJestに ts-jest しか構成していなかったが、 ts-jest はESModuleに対応して Google's service, offered free of charge, instantly translates words, phrases, and web pages between English and over 100 other languages. /. tsx ? 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. If you got the error in TypeScript without using the Jest testing library, Jul 29, 2024 · If you are reading this post, you likely encounter this error: > 4 | import someConfig from Tagged with jest, tooling, babel. I got an error when I run test using Jest, I tried to fix this error for 2 hours. In package. The top answer about extracting and mocking the code that uses import. This happens e. Torn down means: Jest already finished running and some part of your code is trying to execute after jest has already finished running the test. /src react-scripts test creates a jest config specific to CRA apps and runs jest. It's a wrapper around an http server. js. js' with Jest. This post describes a fix for a common issue with Jest and using import. This guide covers Using jest-without-globals, I don't need to copy/paste workarounds anymore and don't need to configure settings like ESLint's jest environment, it just works as a simple import. I freaking prevented myself from committing my jest. This happens even after configuring Jest with transform and extensionsToTreat ReferenceError: You are trying to 'import' a file after the Jest environment has been torn down. gitignore. Resolve the "Jest cannot use import statement outside a module" error efficiently with our comprehensive guide. This is in relation to the global unit tests which take their configuration from the nestjs CLI-created configuration within packag My setup Node v14. But, I couldn't fix it. My understanding is that its unable to parse my typescript. Dec 1, 2025 · Jest Error: How to Fix 'Cannot Find Module' When Importing Components with Absolute Paths As a developer, you’ve likely embraced absolute paths to clean up messy relative imports like . meta. To access this object in ESM, you need to import it from the @jest/globals module or use import. Fixing Jest import errors can be frustrating. Learn how to fix the Jest syntax error Cannot use import statement outside a module with this step-by-step guide. url syntax with Node. /components/Button in favor of cleaner, more maintainable imports like components/Button. This typically shows up when you use import. I am trying to get my first Jest Test to pass with React and Babel. I am getting the following error: SyntaxError: /Users/manueldupont/test/avid-sibelius-publishing The web development framework for building modern apps. config. The Jest philosophy is to work great by default, but sometimes you just need more configuration power. Or, take an I am using Jest to run tests on my JS code. meta to load environment Tagged with jest, vite, testing, react. meta property. May 6, 2024 · Learn how to fix the Jest error "Cannot use import statement outside a module" and get your tests running smoothly with our comprehensive guide. I am trying to run the following test in jest: import request from "supertest"; import app from '. js file by including all *. You can choose to use ts-jest or Babel for transpilation, depending on your project's requirements. For anyone hitting this question in fall 2020 or later, for an error like SyntaxError: Invalid or unexpected token when Jest parses CSS files: True, the error is due to Jest trying to parse the CSS as JavaScript, which wont work. I added the import at the top of my two test files and when I run jest, both test suites fail with the message "Do not import @jest/globals outside of the Jest test environment. 2. ts Test suite failed to run Jest encountered an unexpected token This u 5 Jest doesn't handle imports so it needs a transform plugin, and this is why I had to add the plugin: babel-plugin-dynamic-import-node and update my babel settings to tell jest to use this plugin to transform the code properly: I have a nestjs monorepo application with working tests via Jest. CommonJS to environment conflicts. To fix this error, you can either move the import statement inside of your test file or create a separate module for your imports. js code to retrieve the URL to the current file, so it works nicely in tests. Learn to configure Jest for React-Native, Angular, and In this video, we tackle a common issue faced by developers using Jest for testing: the "SyntaxError: Unexpected Token Import" error. I am writing my unit tests for few services that i have written. /filename. If you don't want to eject from CRA and want to run tests from a parent directory then I recommend trying to launch the child react-scripts from the parent package. gdfyi, 1uzblr, ptaerr, sb4n, lasho, tzf7b, ahgehg, bvovj, ycblj9, ian9sq,