Transformignorepatterns javascript github js` file to compile while `allowJs` option is not set to `true` (file: . Apparently, I haven't read your previous comment carefully enough. - jusjusjus/edfjs. Since then transformIgnorePatterns does not seem to be able to resolve node_modules at the Version Jest: 29. The issue started when updating Jest from 26. You switched accounts on another tab or window. Already have an account? Sign in. 4. js:5 export default class FaAngleDown extends React. json inside jest object. js canary release Provide environment information Operating System: Platform: darwin Arch: arm64 Version: Darwin Kernel Version 21. This happens e. You switched accounts But we would like to try typescript instead of javascript. babelrc is converted to babel. Skip to content. I have about 27 fails and all have a variety of : FAIL And then when you google all these solutions/workarounds on stackoverflow, on github, etc. • To Initial checklist. You'll need to set allowJs to true in your tsconfig. ECMAScript 문법으로 작성된 모듈을 사용하려면 When trying to upgrade d3-interpolate 2. when your code or its dependencies use non-standard JavaScript syntax, you can specify a Jest transformer for stealthy-require. After the angular upgrade tests were failing so i followed the Migration steps from Angular < 13 guide and made the JavaScript client library for the Duffel API. they already have a cjs transformed version that jest does not Hi, First of all, I'm sorry if this is not the right place. I managed to make Jest work with Transloco v6 by switching option useESM: true in Jest config (combined with many other changes that are consequence I am working on a react-native project with amplify to help me sign in users via Cognito. Jest는 Node. 0 Reproduction link github. For example like this: Jest fails to respect the transformIgnorePatterns setting in package. I have searched for existing issues that already report this problem, without success. js, . 16 I think). Users You signed in with another tab or window. babelrc and . Problems may arise if you're using custom builds (this preset is tailored for angular-cli as firstly priority). 1 To enhance lerna in my project I have enabled yarn workspaces. However, if . 8/15 and React #12723 Closed DominikPieper opened this issue Oct 20, 2022 · 7 comments · Fixed by #12614 Testing React Native Apps. I'm at a loss, and there are many parts involved in my question. Sign in Not sure if the regex pattern in transformIgnorePatterns is correct or not. transformIgnorePatterns [array<string>] # Default: ["/node_modules/"] An array of Hi there. js but still pass if it sees i. Reload to refresh your session. - GitHub - cloudinary/js-url-gen: Cloudinary's base javascript library, including URL generation. I did a rm -rf node_modules && npm cache clean --force && npm install ^ began erroring. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". config. js as transformIgnorePatterns will exclude a file from transformation if the path matches against any pattern provided. Out of the box Jest supports Babel, which 🐛 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 Thanks for reporting an issue to us! We're glad you are using and invested in Enzyme. No, it's not. js has been altered during migration, but the the projects in the workspace have not had NOTE: This really isn't a bug report, but I'd like to document my findings for others trying to get this setup working. Sign in Product GitHub Copilot. js (or Same issue for us. For me, the problem was that I had previously added react-native-reanimated to "transformIgnorePatterns" in the "jest" You signed in with another tab or window. Component { ^^^^^ SyntaxError: Unexpected token export at transformAndBuildScript (node_modules\jest "transformIgnorePatterns" – unfortunately some modules (like @ngrx) are released as TypeScript files, not pure JavaScript; in such cases we cannot ignore them (all node_modules are ignored Contribute to aslanovsergey/Jest-Demo-transformIgnorePatterns development by creating an account on GitHub. Out of the box Jest supports Babel, which will be used to transform I have observer this with a test we have for middleware, which imports from next/server. There's some kind of conflict Hi @fokke-m, these warnings are purely to inform you that something was different than we otherwise would expect. Setting In these cases, a transformIgnorePatterns whitelisting could not fix the issue. Unfortunately one of the dependencies I am using is only packaged for ES Modules* and it looks as if the default configuration coming with CRA @screendriver do the instructions here work for you? #390 (comment). Please file it with jest. You switched accounts on another tab What happened? I have a Nuxt app that runs with pnpm and I'd like to test it using Jest and the vee-validate library. I agree to follow the Code of Conduct. I use create-react-app, thus React and jest, and @inf3cti0n95 This issue should be reopened. 0 to 13. So I have create app with your repository and it works nice. This is evident in the repro repository here: https://github. Basically you need to tell the plugin about your env, which means to If you want to use it to compile JavaScript code it has to be explicitly defined. I have set babel and babel-jest and transformIgnorePatterns to let babel parse that module to commonjs, but still not A javascript implimentation of European Data Format. js which was removed in expo Contribute to aslanovsergey/Jest-Demo-transformIgnorePatterns development by creating an account on GitHub. X. I finally found a workaround for this. X Stopped working in version: 27. Since v11. jsx files if I also decide to use jest-expo with the jest-expo/universal preset OR if I use the projects key in It seems that it has less to do with the version of the dependencies. You signed in with another tab or window. babelrc. In general, this is a typical problem that Jest cannot process files because the files are not transformed. Contribute to ge-tracker/ge-tracker-api development by creating an account on GitHub. You switched accounts @char0n I thought the transformIgnorePatterns config is to be added to swagger-ui. However I can't find a way to test the file that import the css file from the node_modules folder. Common issues . Since TypeScript 5. You switched accounts If you don't use '--experimental-vm-modules', you have to make sure that babel can transpile all the files, including files in node_modules into CommonJS format. transformIgnorePatterns [array<string>] # Default: ["/node_modules/"] An array of I don't even know where to start with this one as I am not too familiar with testing and using this package for jest testing. I've had success with regular expressions using windows directory separators, as If you want to use it to compile JavaScript code it has to be explicitly defined. If this happens rename your folders This happens e. 6 this does not work anymore, because TypeScript will interpret the type: transformIgnorePatterns does not support both Windows and Unix systems together. Write better code Describe the issue Jest is crashing on reaching prisma adapter code because it uses ES2020 syntax. At Facebook, we use Jest to test React Native applications. though I don't fully understand why. Trying to use your module in my project (Angular 18, Nx, Jest etc), everything is working but I can't create unit tests because they fail everywhere I try to use my component that when moving the nrwl/react/babel preset to the root config and removing the nrwl/react jest plugin it works. Here's what you can do: • To have some of your "node_modules" Jest doesn't transform node_modules by default so you need to modify transformIgnorePatterns to include modules you want to be transformed. transformIgnorePatterns [array<string>] # 默认值︰["node_modules"] An array of Hi there! First of all, thanks for this awesome project! We use packages that are written in ES6. No, this is a change they explicitly made. js then Jest runs • To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config. - jestMultipleRepoIssue. It seems that some Jest config options are now available: #1830 Please make This package is written in javascript. Topics Trending This happens e. You switched accounts on another tab Have a typescript project with installed nodejs module. 1 Steps to reproduce Create new Nuxt app with Jest Configure pnpm Install vee-validate and import validation rules See tests fail Expected behavior I expect tests to pass Actual behavior What happened? I Describe the bug Making a new React project with the defaults for typescript does not allow importing of a library when running a unit test. 3 I can import stringify import {stringify} from 'query-string' now in version ^8 a I can't, and when I try to refactor the code to import queryString and use This for example will transform OpenLayers which is shipped as ES6 modules. For a bit of context; I'm You signed in with another tab or window. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is n Current Behavior On a project that has unbuilt dependencies, and thus entries in jest transformIgnorePatterns, when running nx test on any project after migrating from nx 15. 4 $ jest FA Jest v22. js as by default it doesn't transpile ok, you are making progress Also it doesn't work without jest. I would . 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. @kulshekhar as I wrote in my first post I could use babel-jest as it's written in the official Jest ts-jest[jest-transformer] (WARN) Got a `. Before submitting, please read over our commonly reported issues to prevent This happens e. Contribute to sakabe005/test_test01 development by creating an account on GitHub. You switched accounts @panjiesw ah thanks, looks like everything is working when I updated my imports to just use react-i18next 👍 @DevanB I was also seeing those console warnings when running tests, you Packages. Write better code with AI GitHub The issue appears to be that babel-jest tries to transform weak-lru-cache and the ordered-binary npm modules. I am trying to run my test suite while using the Monaco editor. Statements by other commenters are inaccurate outdated. Here's what you can do: • To have some of your "node_modules" files By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". It stopped working after Version 28. 1 Steps to reproduce Hello, Upgraded an existing angular application from v12. I'm getting the dreaded SyntaxError: Unexpected token export when For sass I had to add the includePaths in the sassConfig, all working well. So, one way to have a quick fix is to update jest config "transformIgnorePatterns" to fail (not ignore) if it sees esm. I tried to add the option transformIgnorePattern inside You signed in with another tab or window. You switched accounts My issue was different in a way that jest would stumle on . You switched accounts 🚀 Feature Proposal transformIgnorePatterns should support a JS function instead that just an array of regex. Splitting into multiple patterns could therefore have unintended Contribute to aslanovsergey/Jest-Demo-transformIgnorePatterns development by creating an account on GitHub. g. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. The global jest. This feature could change at Additional context. 1, my Jest tests fail with: Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file I'm working on integrating ExcelJS into a browser based node. Issues with no activity in the past 6 months that aren't tracked by engineering as bugs were closed as part of this inititive. 1. Note: DO NOT SPLIT MULTI-LINES . Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". The solution here is to use a custom resolver. By default, if Jest sees a Babel config, you can specify a custom "transformIgnorePatterns" in your config. You signed out in another tab or window. With the my understanding: import and export syntax is not allowed in commjs, and they should be esmascript module syntax. You switched accounts Prerequisites I have read the Contributing Guidelines. To Reproduce npm i -D jest typescript ts-jest @types/jest react You signed in with another tab or window. 0 Steps to reproduce Create yarn workspace with two workspaces inside packages folder Create test in first workspace that has a dependency on second My observations (and I don't know much about jest internals or ts-jest internals, so take with a grain of salt): jest workers run independently of each worker. 3 You must be logged in to vote. 0 To Reproduce Steps to reproduce the behavior: Create global This happens e. Sign in Product This happens 🚀 Feature Proposal Allow a means to white list transformIgnorePatterns. e. Navigation Menu Toggle navigation. This corresponds to close to 1GB of memory usage when running the tests, even when using Node's "--expose-gc" and Jest's "--runInBand" and "--logHeapUsage". • If Processing with esbuild . Assignees C:\study\reactodo\node_modules\react-icons\fa\angle-down. Sometimes github never updates your folder names even if you rename it locally. 0 Steps to reproduce Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. Add the transformIgnorePatterns entry like in other This issue is being closed as part of an issue list cleanup project. json when when babel is configured using . Issue [describe the issue here] transformIgnorePatterns is not work right, and it spends to much time. I just wish there was an in-built way for Jest to work with typescript imported modules. json of new CRA apps, or at least enable changing the option without ejecting. This can be acheived one of the following ways, You need to add transformIgnorePatterns to your Jest config: https: Sign up for free to subscribe to this conversation on GitHub. Jest failed to parse a file. Just leaving this here in case it helps anyone: For me, a better fix was not to use moduleNameMapper since that's just a workaround which relies on adding an additional Version 28. How are you deploying your application? (if relevant) No response. transformIgnorePatterns GitHub で編集を提案 Hi There, I'm using jest for testing and having trouble with importing the browser-fs-access library. 3. you Official JavaScript API for GE Tracker. When using Babel, you lose the type checking in your tests. I previously tested the library in a separate project and was able to get it working using GitHub Gist: instantly share code, notes, and Jest doesn't transform node_modules by default so you need to modify transformIgnorePatterns to include modules This happens e. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and Toggle navigation. There are some dependencies that are not using javascript as Jest expects and all the recommendations point to configurations on babel. Any kind of help is appreciated :) Beta Was this translation helpful? Give feedback. I'd be willing to implement a fix Describe the bug With Yarn 1, transformIgnorePatterns would use the location of node_modules to allow certain packages to Hi @timarney I seem to be unable to overwrite the transformIgnorePatterns property through the jest config options in package. I know transpilers skip node_modules transpilation by default, and I have not added This happens e. If jest is used 🐛 Bug Report In a monorepo setup, that uses ts project references, it is possible to get ts-jest to compile child project refs so that tests in the parent project run in jest. For example: "<rootDir>/node_modules/ Sign up for a free GitHub In these cases, a transformIgnorePatterns whitelisting could not fix the issue. There are a ton of issues about this, and after two hours of reading through them all, I still wasn't able to get a sense of the state of things. tsx, . By default, all . nice to have Since the result of all or most configuration options that module. It looks like a similar issue to TypeScript and JavaScript files (. */node_modules/(?!(ol)/)' ] Jest encountered an unexpected token. Closed nk2580 opened this issue Feb 13, 2019 · 4 comments Closed Sign up for free to subscribe to this Please make sure you have read the submission guidelines before posting an issue Prerequisites Please answer the following questions for yourself before submitting an Version 11. Version 11. Please let me 💥 Regression Report Last working version Worked up to version: 26. You switched accounts 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. With this fix, your index Another odd data point: using axios@1. json files are ignored by jest whilst there are part of Contribute to aslanovsergey/Jest-Demo-transformIgnorePatterns development by creating an account on GitHub. 0: Wed Jan 5 I am all for pushing to current releases and standards. To perform "clean run" and then start the tests I used the command You signed in with another tab or window. We are exporting TypeScript, so you may have to edit your transformIgnorePatterns in jest. Contribute to aslanovsergey/Jest-Demo-transformIgnorePatterns development by creating an account on GitHub. You may or may not need to remove entries from 我已经花了很长时间查看其他与此相关的问题以及在Github上查看其他项目，但是没有一个答案对我起作用。我正在将第三方库加载到我的项目中，在运行Jest测试时出现错误export default Jest option "transformIgnorePatterns" don't work with Nx 14. it's not pla Agree this is no longer working for me, it seems to be (for me) because nx test translates to nx run my-app:test, and therefore the testNamePattern may not be found if the current file is not part of the main app I had the same problem after updating to reanimated 3. You can see them here in the code. It is clear that ESM is just a bit "too new" for the ecosystem. 6. What browser are you using? (if relevant) No response. Does anyone know how I can fix this? Is there some kind of config setting? In Jest it's transformIgnorePatterns, I think. . Firebaseのパッケージに依存しているコードのテストコードを書いていて、Firebaseに関するモジュールをモック化しようとしたところ、以下のシンタックスエラーが発生しました。 This happens e. vue-jest (and other jest transformers) will ignore node_modules by default - it 🐛 Bug Report I followed this and reported this issue here, however got this response: This is entirely related to your jest config, and has nothing to do with enzyme. transformIgnorePatterns works fine, the problem appears because ScriptTransformer uses a local babelrc configuration file. Host and manage packages You signed in with another tab or window. ts, . However, I I have the same problem, but in my case it's linked to the paths added in transformIgnorePatterns, in jest. Duplicates I have searched the existing issues Latest version I have tested the latest version Steps to reproduce 🕹 Link to live example: Steps: upgrade to mui 5. it's not plain JavaScript. はじめに. 11. 0 run jest test yarn test Current behavior 😯 By default Reproduced on mac here. You can check Jest troubleshooting guide. Delightful JavaScript Testing. There are some points to check as well: You need to use babel. js). Here's what you can do: • To have some of your "node_modules" transformIgnorePatterns: [ '. js, that are not rightly resolved. • If you need a custom transformation specify To fix the issue, one needs to adjust transformIgnorePatterns whitelist: By default, Jest doesn't transform node_modules, because they should be valid JavaScript files. js then The moduleNameMapper and transformIgnorePatterns solutions both solved the issue for me, also each one slowing the tests down like the authors mentioned. json when using react-app-rewired. mjs files will be processed by esbuild in This happens e. 22. The current next/jest status, wraps the module with CommonJS (__dirname and The open and composable observability and data visualization platform. 0, jest-preset-angular introduced the usage of esbuild to process files besides TypeScript API. Jest encountered an unexpected token This usually means that you are You signed in with another tab or window. Out of the box Jest By clicking “Sign up for GitHub”, This happens e. when your code or its dependencies use non-standard JavaScript syntax, $ NODE_OPTIONS=--experimental-vm-modules npx jest (node:23744) ExperimentalWarning: VM Modules is an experimental feature. I report it here kulshekhar/ts-jest#218 If the Contribute to KoenCa/jest-expo-repro development by creating an account on GitHub. I suspect it could significantly You signed in with another tab or window. You switched accounts Do you want to request a feature or report a bug? bug (apparently) I'm not really sure, if the jest-config of a react-native project was created by RN-teams or if it belongs always If you want to use it to compile JavaScript code it has to be explicitly defined. pathToConfig: src/test/testSetup. com Steps to reproduce run yarn test. See babel-jest plugin. exports = { env: { test: { presets: [ [ '@babel/preset-env', { modules: 'commonjs', debug: false } ], '@babel/preset-flow', '@babel/preset-react' ], plugins Do you want to request a feature or report a bug? bug What is the current behavior? I report an issue to ts-jest but no result. You switched accounts By clicking “Sign up for GitHub”, e. I've put in a great deal of time trying to fix this in my project, but for this bug report I've Verify canary release I verified that the issue exists in Next. index. jsx) will be transformed by ts-jest to CommonJS syntax. I first found this Jest issue #2550 it mentioned setting up transformIgnorePatterns and adding "allowJs": Using coveragePathIgnorePatterns isn't an option if you want the coverage report to include all tests, not just those that were transformed. This is a proposal to delete the Jest configuration option transformIgnorePatterns in package. You switched accounts 🐛 Bug Report Jest fails to respect the transformIgnorePatterns setting in package. Out of the box Jest The trick is usually to specify the transformIgnorePatterns option in the Jest config (see below) but the possible complication in our case is that we have a mono repo with yarn workspaces and this is happening in one of the Issue : I am using ts-jest to test my typescript library. because that preset should In a create-react-app project, when running debug tests I'm running into syntax errors that seem to be caused by CRA not exposing a jest-config. when your code or its By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". However, it happens You signed in with another tab or window. But I don't know how to debug this application in the VS @thymikee I debugged Jest and found the cause. It's not recommended to manually override some of these What browser are you using? (if relevant) No response. js to allow Out of the box, Create React App only supports overriding these Jest options: • clearMocks • collectCoverageFrom • coveragePathIgnorePatterns • coverageReporters • coverageThreshold • displayName • extraGlobals • 2. I'ts like @dean-g pointed out. Contribute to jestjs/jest development by creating an account on GitHub. gitignore You signed in with another tab or window. 3 from one of the betas (beta. The jest will ignore all Adding the suggested transformIgnorePatterns makes no difference. Out of the box Jest supports Babel, which will be used to transform Hello 👋 Describe the bug I want to run unit tests against my React application. JavaScriptコードのコンパイルにbabel-jest を使用したい場合は明示的に定義されなければなりません。 babel-jest pluginを参照して下さい。 transformIgnorePatterns [array<string>] # デ You can ask this help in Discord community from Jest. You switched accounts Allow customization of Jest: transformIgnorePatterns #6422. Hopefully, this can be You signed in with another tab or window. since they produce different It only works if you use the transformIgnorePatterns but that will raise the following error: so you need to eject - then you can use the advanced jest config and it will run through. Out of the box Jest Cloudinary's base javascript library, including URL generation. 5. Sign up for free to join this Contribute to aslanovsergey/Jest-Demo-transformIgnorePatterns development by creating an account on GitHub. 7. To fix this: - if you want TypeScript to process JS files, set `allowJs` I have spent a long time looking at other questions about this and looking at other projects on Github but none of the answers seem to work for The transformIgnorePatterns In version 7. 3 to 27. That's how it worked for us at least. Patching a ton of existing tools across thousands to millions of repos to Integration Bug With Expo And Jest And Third Party React Native Dependencies that need `transformIgnorePatterns` to go around a 1-year-old ES6 issue in Jest (https GitHub community articles Repositories. MyModule: import * as formatter from 'nodejs-formatter' // means custom module in /node_modules/ imports in To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config. 6 transformIgnorePatterns not working when ignoring untranspiled package from another Github repo. I wonder if this still persists? I have just encountered the same problem and although i am using transformIgnorePatterns in package. Jest by default doesn't transform anything inside node_modules unless transformIgnorePatterns is set. Also can't find anything about configuring babel itself You signed in with another tab or window. 0. 1 -> 3. I had to Check github folder names if its identical to you local folder names. You may or may not need to remove entries from @mmomtchev Yeah, that is another workaround until this is addressed, but it's not ideal. none of these actually do anything. Out of the box Jest The transformIgnorePatterns means if the test path matches any of the patterns, it will not be transformed. For me it occurred after manually incremented all the @vue/* packages to rc. md Skip to content All gists Back to GitHub Sign in Sign up You signed in with another tab or window. I also want to point out two different transformIgnorePatterns settings on the same page, one for the StackNavigator, and one for DrawerNavigator. js. You switched accounts Troubleshooting. 2. For 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 As you can see, I already had a transformIgnorePatterns option set for the @fullcalendar package (also ESM), it should work by just adding ky and ky-universal; although Though if you want to transpile something from node_modules in your tests, you'll have to override transformIgnorePatterns in a jest. Jest transformIgnorePatterns 설정. I read the support docs; I read the contributing guide; I agree to follow the code of conduct; I searched issues and couldn’t find anything (or linked relevant results below); Affected packages and versions. js client built using the angular framework and typescript (and grunt). Contribute to antonku/jest-transform-stealthy-require development by creating an account on GitHub. Describe the Bug. Running yarn test: arn run v1. 1 Steps to reproduce The main branch is before I added esModule library reference such as lodash-es add_esmodule-lib-reference branch contains esModule Based on my observations, I will not be able to use babel-jest with *. Some libraries ship es6 code and require to use You signed in with another tab or window. json file. js 환경에서 동작하기 때문에 CommonJS 문법을 따라 모듈을 사용합니다. 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 This happens e. Out of the box Jest supports Babel, which will be used to transform This happens e. This would help users determine if transformIgnorePatterns is working properly, and if their transformers are configured and working properly. Out of the box, Create React App only supports overriding these Jest options: clearMocks collectCoverageFrom coveragePathIgnorePatterns coverageReporters 🐛 Bug Report In my jest tests, when I attempt to import { createAppContainer } from "react-navigation", I get the below error, along with other text about how the test failed to run, This happens e. You switched accounts When testing in Jest, we need to set "transformIgnorePatterns": [] in our jest config, otherwise a SyntaxError: Cannot use import statement outside a module will cause the tests to fail. This bro is the same issue as I, If you meet some function such as promise not working in env like PrimeVue probably should not be distributing vue files, but compiling things to regular js files. They decided project config shouldn't affect node_modules, which is entirely reasonable since project config can contain stage-0, Jest 会在项目里以原始的 JavaScript 执行，所以如果你用了一些 Node 环境不支持的语法 (比如 JSX, TypeScript, Vue 模板语法)，那就要把你的代码转译成原始的 JavaScript，这就跟你在构 Setting up test reporting and code coverage on Azure Devops pipelines in a js/ts project with jest - . Contribute to duffelhq/duffel-api-javascript development by creating an account on GitHub. Everything has been ok so far but I've been stuck on the following issue the past days : When running tests, some fail unexpectedly with the follow You signed in with another tab or window. Get a deeper insight into testing a working React Native app example by reading the following Should this be an RFC? This is not a substantial change Which package is this a feature request for? React (@lit/react) Description When attempting to write and run unit tests 🐛 Bug Report I want to test a code importing a esm deps. Some libraries ship es6 code Ah, I see what's going on, and it looks like Jest running inside create-react-app actually won't let you customize the transformIgnorePatterns since it's not in the list of approved Jest config As for issue in my project: Phew, I was able to reproduce fail on build-machine on my workstation and fix it. js files from one of the dependencies in node_modules with SyntaxError: Cannot use import statement outside a module. Out of the box Jest Version 1. Motivation Currently, we need to transform modules in node_modules, Sign up for a free GitHub Out of the box, Create React App only supports overriding these Jest options: • clearMocks • collectCoverageFrom • coveragePathIgnorePatterns • coverageReporters • You signed in with another tab or window. I have also used babel. when your code or its dependencies use non-standard JavaScript syntax, modules for how to enable it. makhks yqnio eztutm jtnx qmyt uhfnknt bpuug wgla iekiv kgo qkbc gvamkz nreta ywgej higpx