Jest syntaxerror unexpected token react. Sometimes, the… Mar 17, 2024 · 解決法.

Jest syntaxerror unexpected token react Mar 13, 2023 · Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' 1 Cannot use import statement outside a module - jest + nextj. 3 project with typescript. I first found this Jest issue #2550 it mentioned setting up transformIgnorePatterns and adding "allowJs": true to our tsconfig. 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. json Renamed the relevant test files from . [React]Jest Oct 30, 2023 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. (react uncaught syntaxerror: unexpected token <) Mar 2, 2018 · SyntaxError: Invalid or unexpected token when testing react application with babel and jest 34 Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' Aug 25, 2023 · 在前端开发中，Jest 是一款流行的测试框架，它支持使用 JavaScript 编写单元测试和集成测试。然而，在使用 Jest 进行测试时，你可能会遇到类似于 "SyntaxError: Unexpected token" 的错误。 Jun 15, 2024 · Jest encountered an unexpected token Jest failed to parse a file. my node version is v16. By making it "^uuid$" this started working for me. Jun 23, 2021 · After digging in react-native's jest-preset. Apr 15, 2023 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. May 26, 2019 · It seems like everyone and their mother are having a variation of this problem. You signed out in another tab or window. Expected behavior. Jan 3, 2024 · FAIL src/App. 2. x I'll stick with this solution for now. Mar 7, 2017 · You signed in with another tab or window. create-react-app & jest — SyntaxError: Unexpected token import. Why did Jest encounter unexpected 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, Sep 6, 2017 · Things change quickly in the js world. However, while running npm i, I noticed this warning: export function flatten (target, opts) { ^^^^^ SyntaxError: Unexpected token 'export' I made sure my jest was properly installed and set up, as per Next. Component { ^^^^^ SyntaxError: Unexpected token export at transformAndBuildScript (node_modules\jest-runtime\build\transform. Observe that test cases fail to execute or produce unexpected errors. 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. You switched accounts on another tab or window. 8 Public or Confidential Client? Public Description Jan 19, 2021 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 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. 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. js file:. It is used by a wide range of developers, from beginners to experts. Marcus Greenwood Hatch, established in 2011 by Marcus Greenwood, has evolved significantly over the years. js In list. 結論から書くと、tsconfig. Nov 23, 2021 · It seems that it has less to do with the version of the dependencies. js file with jest, but it was failing because the component imported a . ts is still using babel-jest which breaks import/export and the globals/tsconfig path isn't getting generated so jest types aren't recognized. js modules/ user/ index. 10. Clearing cache and removing node_modules didn't help. . Essentially, you need to add this to your Jest configuration: Ask questions, find answers and collaborate at work with Stack Overflow for Teams. Transform react-markdown (and its dependencies) using babel-jest (solution for CRA 4. 1. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. jsx'] to jest. Jest: unexpected token export with react-navigation. Try Teams for free Explore Teams 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) For those who use Vue test util in Nuxt 2 and are faced with question or this problem ({"Object. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". Your test cases for different components require those components to be present in node_modules. I'm getting the dreaded SyntaxError: Unexpected token export when trying to Sep 12, 2020 · Jest doesn't transform node_modules by default, transforming all third-party modules would result in significant overhead and unexpected results. 13. Reload to refresh your session. when your code or its dependencies use non-standard Aug 18, 2024 · Links to third party websites are only allowed in addition to having the minimal reproducible example in your post. js: Sep 29, 2023 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. /svgTransform. " 10. Currently, I'm migrating a react project Typescript but to do it as fast as possible and avoid more problems I' May 25, 2022 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. None of the popular solutions here were working for me either. Expected behavior 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 You signed in with another tab or window. However, I am seeing jest tests choke when using such imports with SyntaxError: Unexpected token export errors. <anonymous> (src\components\category-tree\category-tree. js it works, unfortunately i havent found any docs about this why it does. エラー元の tsconfig というパッケージについて調べたら TypeScript 公式のものではなく、しかも 3 年前から更新されていませんでした。 Sep 6, 2019 · NOTE: This really isn't a bug report, but I'd like to document my findings for others trying to get this setup working. Asking for help, clarification, or responding to other answers. You cannot override the moduleNameMapper in package. The packages is collected from several projects to create a reusable libr May 1, 2023 · Jest encountered an unexpected token Jest failed to parse a file. json. svg$': '. However, while running npm i, I noticed this warning: Having trouble running Jest tests: `SyntaxError: Unexpected token <` 5. js will look like this: How to resolve unexpected tokens in TypeScript. App. js project (using TypeScript), and I believe that I have encountered some configuration issues related to using firebase that are causing my Jan 1, 2024 · I was able to get this working by doing the following: Added NODE_OPTIONS=--experimental-vm-modules to the test script in package. Oct 17, 2017 · You need to edit your jest. Sep 13, 2023 · Jest encountered an unexpected token Jest failed to parse a file. Viewed 634 times 1 . json 中添加 --transformIgnorePatterns 这个 flag： Oct 21, 2020 · I can't get my tests to run. 1. Attempt to run Jest test cases. So I decided to come with a post on this with a hope to help more people via channel. it's not plain JavaScript. Apr 25, 2022 · You signed in with another tab or window. I've been able to test ts Jun 24, 2024 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. The example from Sushruth resolves the issue. Dec 1, 2022 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. So I added transformIgnorePatterns to my jest configuration and everything worked: Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. json but in jest. Jun 11, 2020 · amcharts4 issue #2133 - github OR Jest encountered an unexpected token. 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. css stylesheet. js file 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. Please uninst Jan 18, 2020 · SyntaxError: Unexpected token export. 这是由于 jest 默认只识别 js/json 文件，对 css/less 等文件，对该文件类型导入没有办法处理。当然不仅仅是 css/less 文件，除上述文件类型之外也是 Jan 19, 2019 · If you are using create-react-app, You probably don't want to eject it. I had to mock both the Mapbox-gl and react-native EventEmitter dependencies in addition to adding a ton of babel transforms. So to be clear, I've followed the instructions to include 2 lines in my setup file, AND included the transformIgnorePatterns you suggested. Sep 6, 2021 · 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: What it is and how to fix it. Weirdly this may be somehow related to using enums? See the reproducible demo below. Nov 4, 2021 · The issue started when updating Jest from 26. x of jest so I think since I'm just now upgrading from 27. jsonのjsxが、 "react-jsx"ではなく、"preserve"となっていたからです。 Next. js: Aug 14, 2019 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. C:\study\reactodo\node_modules\react-icons\fa\angle-down. component. The global jest. Oct 21, 2019 · You signed in with another tab or window. When I run 'yarn test' for my react app, I get the dreaded error: Jest encountered an unexpected token. Jest: Test suite failed to run, Unexpected token = 4. 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. Sep 23, 2024 · I am using Jest with React to write unit test cases for my project with the following specs. 碰到了一些 Jest 的报错，列一下搜到的解决方案. See full list on dev. Feb 11, 2019 · For those that travelled this far. js file in the root directory. <anonymous> (src\components\category\category. 253. babelrc and some dependencies, moduleNameMapper and transformIgnorePatterns in jest. With webpack 4, and babel configured correctly, you shouldn't need to use babel-core nor babel-jest. g. 14. component Oct 29, 2019 · data-jest-file-name: The name of the file (e. js (@azure/msal-browser) Core Library Version 3. Dec 27, 2022 · I was using jest 27, which works fine now. js:1] 1 how to mock autofocus prop of a child textInput in ReactNative Jun 21, 2024 · 用 jest 结合 @testing-library/react 测试 react 组件时，由于组件内部 import 了 css 文件，会抛出如下错误. Jest encountered an Issue : I am using ts-jest to test my typescript library. Feb 9, 2024 · Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. 3 to 27. CRA & Jest. js in the test/unit directory, and then add these codes: Jan 17, 2022 · You signed in with another tab or window. js list. SyntaxError: Unexpected token ( for jest. I have tried several examples of adding --transformIgnorePattern but this does not seem to fix the problem. By default jest doesn't transform ES6 js code from node_modules. Jun 28, 2019 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. js (source code), the line SyntaxError: Invalid or unexpected token 1 | import * as React from 'react'; 2 | import Jan 23, 2015 · However, when I tried to put my JS in a separate file, I started getting this error: "Uncaught SyntaxError: Unexpected token <". js. js I have export UserList from '. Aug 22, 2017 · ({"Object. js:2:44) at Object. 6. Jan 16, 2023 · Jest SyntaxError: Unexpected token '<' React. Jan 31, 2019 · I ran into a similar situation where I wanted to test a React component . Test suite failed to run Jest encountered an unexpected token 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 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 Nov 16, 2019 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. May 6, 2021 · Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. 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. The first method works if for some reason you have to import a css file from node_modules directly. js Jan 27, 2023 · I am trying to set up firebase authentication on my Next. js with following con Jan 31, 2023 · Jest encountered an unexpected token Jest failed to parse a file. 2 to 9. 5. This repo contains several reusable libraries for my backend projects. This is one method of resolving unexpected tokens in TypeScript. So the final fix was: Update the imports Aug 9, 2023 · Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. When I try running tests for any component that uses react-markdown I get some issues here Jest encountered an unexpected token Jest failed to parse a file. js' so your jest. React Jest - Unexpected token import. '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. Aug 10, 2024 · Jest encountered an unexpected token Jest failed to parse a file. svg') data-jest-svg-name: Only the name portion of the file (e. This did not work, what did solve it in the end was adding the following to our jest. make a file with the name of fileTransformer. Nothing worked from everything I have tried from all the SO questions and GH tickets. It offers valuable insights on how… Oct 23, 2023 · 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 . To solve this without ejecting we need to be able to modify jest configuration without eject. Jest test cases should run successfully without any errors, similar to when using react-pdf version 8. Identify and resolve configuration & code issues with ease. 0. test. tsx Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. The Error Aug 19, 2021 · Option 3: If you still want to make jest run react-markdown's code. Feb 17, 2022 · Jest encountered an unexpected token Jest failed to parse a file. jsではtsconfig. js:5 export default class FaAngleDown extends React. +\\. Dec 28, 2022 · I have just started learning react testing library with jest and created a sample application to mock the server. You are mixing two presets: jest-expo for Expo apps and ts-jest for TypeScript apps. Add this line inside the transform object: '^. js docs, but still same issue. Ask Question Asked 2 years, 1 month ago. Jun 18, 2021 · 🐛 Bug Report I keep getting the "Jest encountered an unexpected token" and I've tried a bunch of the fixes recommended online including: adding transformIgnorePatterns to both of these: transformIg Aug 30, 2019 · SyntaxError: Unexpected token ( for jest. I'ts like @dean-g pointed out. config () Jul 14, 2023 · You have a few problems with your jest. Sep 13, 2019 · jest: Test suite failed to run, Jest encountered an unexpected token - typescript react. jsonの該当項目はビルド時に自動的に"preserve"に書き換わる挙動をするようだったので、 UPDATE who use create-react-app from feb 2018. 252. 3) (credit to How to set transformIgnorePatterns to fix "Jest encountered an unexpected token" nrwl/nx#812 (comment)) Dec 26, 2023 · Core Library MSAL. Sep 6, 2020 · 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. when your code or its dependencies use non-standard JavaScript syntax, or when May 22, 2023 · I have a problem with the unit tests of my React project, it is configured to be compiled with webpack, however when executing the unit tests they are giving me this error: SyntaxError: Unexpected token 'export' This is my jest. js has been altered during migration, but the the projects in the workspace have not had their jest. 4. json for jsdom. I finally found a workaround for this. because it is a JS file with TS syntax, or it is published to npm as uncompiled source files. Jun 28, 2024 · Answer by Cohen Terrell The easiest way to fix this one is of course also using the same option transformIgnorePatterns but we just simply put in the package. js, and the last one was close but I was still missing one important thing the imports. Jul 16, 2017 · So I have these file and folder. Jun 8, 2020 · The code doesn't really match your description since your saying that you're importing from react-icons/fa but in the code you're importing from react-icons/all (importing from react-icons/fa actually works). Sentry Answers > React > Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' Jest encountered an unexpected token Jest failed to parse a Mar 9, 2023 · Hi redwood community! I am trying to use react-markdown in a new redwood 4. json . May 25, 2022 · My Spring Boot Best Practices for Developers article has become one of the most viewed in my articles. jest unexpectd token. 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 Sep 16, 2022 · New NX projects with React are still running into this issue, the jest. Jan 22, 2022 · I'm using jest to test a react TypeScript app. Dec 21, 2023 · Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. This can cause conflicts or unexpected behavior, because they might have different settings or transformations. ts Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. SyntaxError: Unexpected token '. 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 Nov 27, 2020 · React Jest causing "SyntaxError: Unexpected token . Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. My case was module federation shared dependencies caused a legacy package's css not to get picked up. Mar 14, 2019 · @krizzu, no help, at least, with the "Jest setup file" option. Sep 24, 2019 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Aug 2, 2022 · Background I have a monorepo project built using Nx. Jest: Test suite failed to run, Unexpected token = 1. Dec 23, 2020 · but Jest doesn't like it and throws a SyntaxError: Unexpected token 'export' I tried different things, like play around with . By configuring this option correctly, we can exclude 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. 0 in the project dependencies. tests failing with Apr 14, 2023 · Fix the common Uncaught SyntaxError: Unexpected Token < in React with our step-by-step guide. json file under jest area since create-react-app still uses these options to override their default options: ,Of course most of above ways are to try to transform that package again but exclude the others in node_modules by setting 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. config. js to . Jest - Unexpected token import Jest SyntaxError: Unexpected token < 1. 3. Jest is a popular JavaScript testing framework. js:1] 95 Importing images breaks jest test Jul 3, 2018 · Thank @mattyclarkson for the investigation. jsx and added extensionsToTreatAsEsm: ['. Jun 27, 2023 · Configuring transformIgnorePatterns: To address unexpected token errors in Jest, the transformIgnorePatterns option plays a crucial role. <anonymous>":function(module,exports,require,__dirname,__filename,jest){ SyntaxError: Invalid or unexpected token. from 'react Aug 2, 2022 · I was using a jest. This happens e. 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. Jest encountered an unexpected token - React with jest and Jan 27, 2020 · [React]Jest SyntaxError: Unexpected token import. 这个是我的项目的问题，运行 Jest 后报错说 "SyntaxError: Unexpected token export"，最后是用在 StackOverflow 第二个解决方案成功的，修改方法为在 package. To Reproduce npm i -D jest typescript ts-jest @types/jest react-test-renderer add a jest. This is the test I'm running: import { render, screen } from '@testing-library/react' import { toBeInTheDocument } from '@testing-library/jest-dom' i May 21, 2023 · Introduction In modern web applications, you’ll often find yourself needing to make several API calls to fetch or send data. Since I'm running Webpack and using Babel (for the new React JSX transform), all the Remark modules are compiling properly in the real world. I am on Jest > 24, no type script, its an ejected react-create-app pretty recently (6 months ago~). In my case, the package react-navigation module need to be translated. DOM */ to the top of the JS file, but it didn't fix anything. js I have export default (props) =&gt; () In index. 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. 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:1] 591 How to test the type of a thrown exception in Jest Because NODE_PATH doesn't work in Typescript, I believe this is the only way to do absolute imports in create-react-app-typescript. FAIL __tests__/HomePage. 1: jest-dom has moved to @testing-library/jest-dom. 'some-image. Just use presets env, react, stage-0 to babelrc. May 31, 2023 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. to This error, Jest encountered an unexpected token, remains. js:284:10) at Object. ts file and the quotes kept getting stripped off "uuid" and the fix didn’t work. Sometimes, the… Mar 17, 2024 · 解決法. 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 Aug 18, 2021 · This seems to be because electron-forge itself is not ready for ESM just yet. How to solve syntax error, unexpected token, export type? 0 The problem is a component that uses withNavigation from React-Navigation. The problem is happening because jest now looks at the "browser" field in package. 2. Jest gives an error: "SyntaxError: Unexpected token export" 64. I tried adding /** @jsx React. Provide details and share your research! But avoid …. Sep 26, 2019 · Alright, I actually managed to get this working. <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 . 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 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 export function flatten (target, opts) { ^^^^^ SyntaxError: Unexpected token 'export' I made sure my jest was properly installed and set up, as per Next. Here are some references: jestjs/jest#4842 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. /list'; And in A 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 I've seen some other answers and GitHub issues that describe this, but I haven't been able to find a solution in my case. This means that a file is not transformed through TypeScript compiler, e. I see the problem in jest 28 and above. May 29, 2024 · Update react-pdf from version 8. 0 Wrapper Library MSAL React (@azure/msal-react) Wrapper Library Version 2. Oct 14, 2024 · FAIL __test__/sum. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such I figured it out. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. Since there is the same problem with other third-party libraries (such as Native Base), I concluded there must be a problem with transformIgnorePatterns. js altered with the new transformIgnorePatterns and transform configurations. , it's not plain JavaScript. it's not pla Jan 14, 2021 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Jest - Unexpected token import. [React]Jest SyntaxError: Unexpected token import. I was using Babel with Webpack. When I run Jest, it complains about an unexpected token export (React-Navigation), pointing withNavigation. it's Jun 18, 2020 · ReactプロジェクトにJestを導入してテストコードを書いていたところ、エラーに遭遇して躓いたためその備忘録として。事象以下のようなSampleコンポーネントをJestでテストした時、エラーが… Mar 16, 2021 · 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 Nov 9, 2023 · Jest 一些报错信息. js:1] How to solve syntax error, unexpected Apr 3, 2018 · I am unsure whether your step will not get you stuck in near future. Mar 17, 2020 · [React]Jest SyntaxError: Unexpected token import. Modified 2 years, 1 month ago. js:1] 4 Jest encountered an unexpected token #3746 Jul 3, 2024 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. This happens because react-icons is shipped as es2015 modules and jest doesn't support this yet. ' Sep 25, 2020 · このカンマを削除したところ、無事にテストが実行できました。めでたしめでたし。 余談. It’s known for its simplicity and speed, making it a great choice for testing both small and large projects. tests やプロジェクトルートなどに __mocks__ ディレクトリを作成して ts / js ファイルを作成するのが通例のようです。 公式ドキュメントでは GlobalImageStub など不思議なことが書いていますがあくまでサンプルなので ts / js ファイルを作成する必要があります。 Jest is a JavaScript testing framework that is designed to be simple, fast, and reliable. kizztoj ecd suaxstek byxur hhsof ozalvr wxptndt sxft xtylyj ijl hlrqhc omqd ubiwr joshign ukfj