Chai Unexpected Token Export. I'm trying to import a functions from a dependency to my next/react f

I'm trying to import a functions from a dependency to my next/react functional component, but somehow I keep getting the following error: SyntaxError: Unexpected token 'export' That's the functio A: The error “node unexpected token export” occurs when you try to export a variable or function from a JavaScript module, but you have forgotten to use the `export` keyword. This is something I've wondered about for some time now, but only recently am I stuck on this. I'm trying to export a function from a Js file but recieving a Unexpected token error See full list on bobbyhadz. Nov 5, 2021 · tell me how to solve the problem with the tests my main js (activeBtnClick. json specifies a type: "Module" which defines my entire project as ES6. Jan 2, 2024 · For cases where you control the source of the error, modify your export statements to adhere to CommonJS when dealing with Node. Nov 9, 2017 · We have locked our version on chai but we now get the following error: /src/node_modules/type-detect/index. Jan 3, 2024 · Upgrading from chai v4 to chai v5 yields the following eslint error: cfpathcheck/test/cfpathcheck. Code in CommonJS works. Aug 26, 2024 · React : Uncaught SyntaxError: Unexpected token 'export' Asked 1 year, 4 months ago Modified 1 year, 4 months ago Viewed 974 times Oct 19, 2025 · The Unexpected token 'export' error specifically means that the JavaScript engine was not expecting to see the export keyword at that position in the code. , export const foo = ) in code it’s trying to execute. js): export default function activeButtonClick (button) { if (button. I am getting this error below when running my test in Mocha: What does Jun 19, 2018 · After moving from lodash to lodash-es and to named imports our testing environment fails. json (relevant ones): "scripts Jun 24, 2024 · This article explains how to resolve the "Unexpected token 'export'" error in JavaScript with detailed steps and examples. exe" "C:\\Program Files\\nodejs\\node. Jan 10, 2017 · I use react-icons in my component and when I try to render it with react-test-render I get this: `"C:\\Program Files\\JetBrains\\WebStorm 2016. This is the recommended solution in bullet number 3. js file -- Please help us, we are breaking our heads around this from long time Uncaught SyntaxError: Unexpected token export * Learn what causes the Uncaught SyntaxError: Unexpected token export error in JavaScript. js:1. Here 's what you can do: Jan 5, 2021 · Keep getting "SyntaxError: Unexpected token 'export'" - what can i do/ what is going wrong? Asked 3 years, 10 months ago Modified 3 years, 10 months ago Viewed 2k times Nov 9, 2025 · The SyntaxError: Unexpected token export occurs when the JavaScript engine encounters an export statement (or other ES6+ syntax) that it doesn’t recognize. babelrc and some dependencies, moduleNameMapper and transformIgnorePatterns in jest. test. Why? Asked 3 months ago Modified 3 months ago Viewed 41 times Oct 19, 2020 · rafgraph changed the title TS config error: SyntaxError: Unexpected token 'export' TS jest. Aug 2, 2022 · JEST - SyntaxError: Unexpected token 'export' with uuid library Asked 3 years, 5 months ago Modified 2 months ago Viewed 63k times May 19, 2023 · The error message syntaxerror: unexpected token ‘export’ occurs when you are trying to use the ES6 Module syntax in Node. That means changing export default and export const statements to their CommonJS equivalents. Jan 4, 2017 · mocha/chai test Unexpected token => Asked 9 years ago Modified 9 years ago Viewed 283 times Chai test fail with "Unexpected import token" Follow Permanently deleted user Created October 10, 2019, 10:33 AM Mar 17, 2024 · ES6 中的 Unexpected Token Export 错误是一个常见的语法障碍。本文探究了这个错误的原因，并提出了有效的解决办法，如使用 Babel 转译器、升级浏览器和检查代码语法。此外，本文还提供了有关 Babel 转译器的好处、代码示例和常见问题解答，帮助开发人员理解和解决这个问题。 Oct 30, 2023 · Prerequisites I confirm my issue is not in the opened issues I confirm the Frequently Asked Questions didn't contain the answer to my issue Environment check I'm using the latest msw version I'm us Feb 1, 2024 · Uncaught SyntaxError: Unexpected token 'export' (at pdf. * Get tips on how to fix this error and prevent it from happening again. Chai 4 has been very stable and has been available for over 5 years now. mjs:18148:10) with pdfjs-dist v4. For example, consider one of the most common examples - the style property in the DOM and CSSStyleRule API. js, and the last one was close but I was still missing one important thing the imports. These errors can occur due to non Dec 25, 2025 · The error message SyntaxError: Unexpected token 'export' occurs when Jest encounters untranspiled ES module syntax (e. Jan 4, 2017 · mocha/chai test Unexpected token => Asked 9 years ago Modified 9 years ago Viewed 283 times Nov 23, 2022 · ^^^^^^ SyntaxError: Unexpected token 'export' > 1 | import { v4 as uuid } from "uuid"; | ^ There are several tips on what might be wrong and recommendations on how to resolve it. Includes causes of the error, how to identify the problem, and the fix. js with this step-by-step guide. Did anyone else come across this issue? Feb 7, 2019 · I can't use imports because I always have this error: (function (exports, require, module, __filename, __dirname) { import { expect } from 'chai'; SyntaxError: Unexpected token import In my file SyntaxError: The requested module 'chai' does not provide an export named 'default' I have tried different methods such as using require (), but my package. Default is no Jan 27, 2025 · 背景在前端开发中，测试是一个非常重要的环节。而在进行类的继承测试时，我们通常会使用 Chai 这样的测试框架。然而，在使用 Chai 进行类的继承测试时，有时会遇到 unexpected token import 的错误，这是由于 Chai 不支持 ES6 的 import/export 语法导致的。 Dec 23, 2020 · but Jest doesn't like it and throws a SyntaxError: Unexpected token 'export' I tried different things, like play around with . 0. However, despite following dozens of how-tos and tutorials, I am not able to fix the issue below. This typically happens for one reason: the code hasn’t been transpiled to a format the engine understands (e. But the newest one failes on "export default const", the other one not. May 28, 2020 · Typescript : SyntaxError: Unexpected token 'export' Asked 5 years, 7 months ago Modified 5 years, 5 months ago Viewed 14k times Mar 17, 2020 · When running npm test I am getting the following error message that I have no idea what and how to resolve. By the end, you’ll know exactly how to resolve this issue and prevent it from recurring. classList. Jul 19, 2024 · I am trying to use MUI X Charts in a shopify remix app, but am unable to render a chart due to the following error: export * from '. it 's not plain JavaScript. babelrc to: Jan 9, 2024 · we are using "chai": "^4. js backend code or the parts of the application that get executed on the server. SyntaxError: Unexpected token 'export' Jest Learn how to fix the SyntaxError: Unexpected token 'export' Jest error with this step-by-step guide. Here’s what that conversion might look like: SyntaxError: Unexpected token export jest occurs when you try to export a module using the export keyword but the module does not have a default export. Includes causes of the error, how to identify the problem, and the best Apr 5, 2021 · Prerequisites Checked that your issue hasn't already been filed by cross-referencing issues with the faq label Checked next-gen ES issues and syntax problems by using the same environment and/or tr Nov 28, 2022 · And then How to fix the syntaxError: unexpected token ‘export’ in JavaScript? If you are new to programming and don’t know where to start and practice then visiting Codedamn will be a great decision you can make. The headline change in Chai 5 is ESM. 379? #17618 Unanswered lancejpollard asked this question in Q&A edited Jun 9, 2023 · Customer stories Events & webinars Ebooks & reports Business insights GitHub Skills Nov 9, 2022 · When I run my tests using Jest, I got an SyntaxError: Unexpected token ‘export’ from node_modules/@sendbird/chat/sendbird. To fix this error, make sure that the module has a default export or use the export keyword with an object or function. 9. After updating the node to v20 and triggering Jest tests for certain app Im getting the following error - SyntaxError: Unexpected token ' Sep 4, 2019 · How to fix `SyntaxError: Unexpected token export` when using fabric-ui-foundation Asked 5 years, 11 months ago Modified 5 years, 11 months ago Viewed 1k times Jan 13, 2023 · 事象 Jest を実行した時、SyntaxError: Unexpected token 'export' が出ました😭 エラー詳細は以下の通りです。 FAIL ***. js:49 export default function typeDetect (obj) { ^^^^^^ SyntaxError: Unexpected token export See above for more details. Feb 29, 2024 · 这样，我们就可以在测试代码中使用 import 和 export 语法了。总结在使用 Jest 进行单元测试时，遇到 “SyntaxError: Unexpected token 'export'” 的问题，是因为 Jest 默认不支持 ES6 的模块语法。我们可以使用 Babel 转换器或者 Jest 的 esModules 选项来解决这个问题。 Aug 30, 2021 · jest - Unexpected token 'export' Asked 3 years, 9 months ago Modified 3 years, 8 months ago Viewed 576 times Oct 31, 2019 · I've created a react app that I want to test using the mocha/chai/enzyme combination, but I'm having trouble setting up the testing files. ts Test suite failed to run Jest en Jun 25, 2019 · 关于 export 和export default export与export default均可用于导出常量、函数、文件、模块等在一个文件或模块中，export、import可以有多个，export default仅有一个通过export方式导出，在导入时要加 { }，export default则不需要 export能直接导出变量表达式，export default不行。 3 I updated some dependencies (react, jest and others), and I also got the error: Jest encountered an unexpected token - SyntaxError: Cannot use import statement outside a module I had dev dependencies with needed to be transpiled. 2. should() you must use it in your own ESMs like this: Dec 4, 2019 · And then in project B's index. config. Dec 7, 2025 · In this guide, we’ll demystify the "Unexpected token export" error, explore its root causes, and walk through step-by-step solutions to fix it in Node. I have these configurations for my package. js 1:24 error Parse errors in imported module 'chai': Unexpected token ; (146:10) import/namespace The line of code in question is as Nov 9, 2016 · I'm submitting a bug report Aurelia Skeleton Version skeleton-typescript Framework Version: major Operating System: Windows 10 Node Version: 5. . Because the uuid library I upgraded now did not pre-compile its ES modules, I had to transpile it. I tried to add transformIgnorePatterns and moduleNameMapper to my jest config but it doesn’t work and I didn’t find any topic/thread about that. However, you may encounter the error unexpected token 'export' when using Jest. jsのプロジェクトを create-next-app で作成し、nanoidというライブラリをインストールしてJestでテストを実行したところ、SyntaxError: Unexpected token 'export' というエラーが出ました。 nanoidのimport部分を削除すると問題なくテストが実行されました。 Jul 7, 2022 · Help, help, running karma tests gives me SyntaxError Invalid or unexpected token but the file seems to be OK (you can perhaps still hear me screaming). 3 JSPM OR Webpack AND Version JSP Chai test fail with "Unexpected import token" Follow Permanently deleted user Created October 10, 2019, 10:33 AM Jun 25, 2019 · 关于 export 和export default export与export default均可用于导出常量、函数、文件、模块等在一个文件或模块中，export、import可以有多个，export default仅有一个通过export方式导出，在导入时要加 { }，export default则不需要 export能直接导出变量表达式，export default不行。 TypeScript 5. My project is using uuidv4 which is using uuid. json with any text Azhar Techno Coder 3. 4 i've become the following error: This is my config-file: I hope someone can help 🙏 Jun 27, 2023 · Introduction: Jest, a powerful testing framework for JavaScript and TypeScript projects, occasionally encounters unexpected token errors while parsing files. Enhance your testing skills and ensure smooth functionality in your projects. This keyword is a part of ECMAScript Modules (ESM) specification, which is the official standard way to reuse JavaScript code. When I build project B, there is no such issues with the export. 11. To Reproduce Steps to reproduce the behavior: Install I have two different reat-native projects with exactly the same version of libraries. Oct 10, 2024 · I recently upgraded to Chai 5. 1 Release Notes would always be valid. What is the difference between both c TypeScript Jest: Unexpected Token Export I'm trying to run unit tests for a TypeScript project which uses another TypeScript project I've created as a dependency. Aug 29, 2021 · Tell us what’s happening: I´ve donde the routes, the app behaves as expected, all the FCC test pass, but my functional test with chai, breaks with Uncaught SyntaxError: Unexpected token [ in JSON at position 7251 Your… Dec 5, 2016 · I have my React components all fleshed out, and I wanted to learn how to test these components properly with Mocha + chai. ts) files in Visual Studio 2022 but, getting "Uncaught SyntaxError: Unexpected token 'export" error. export { default as add } from '. 0-beta. Importing Chai To use Chai with ESM, you can import Chai in your test files using the import statement. js, browsers, and popular build tools like Webpack or Babel. I decided to follow a tutorial for creating the mocha tes Aug 22, 2022 · Hi everyone, after updating to 1. Oct 14, 2024 · Im working on a NestJS project which used to run on node v16. below is the code snippet of the karma. Jun 10, 2024 · … but in both cases following this instruction will not set the chai global variable but instead will cause the browser to issue the following error message: SyntaxError: Unexpected token 'export' (at chai. g. /add. I have done this, and also added Learn how to fix the unexpected token export error in Node. Jan 22, 2025 · ES Code in Twilio Function (Console UI) fails with Unexpected token 'export' error. , CommonJS, which uses module. Every style rule has a style property that is a CSSStyleDeclaration; however, if you try to write to that Dec 22, 2022 · Let’s start by installing the dependencies: npm install --save-dev mocha chai @types/mocha @types/chai ts-node global-jsdom ignore-styles @testing-library/react Open package. When I try to update my . 2\\bin\\runnerw. After updating the node to v20 and triggering Jest tests for certain app Im getting the following error - SyntaxError: Unexpected token ' May 31, 2023 · 前提 Next. I've already tried to follow the answer of other questions on StackOverflow, such as: Babel unexpected token import when running mocha tests Unexpected token import, can not set up ES6 in my JS project with Mocha, Chai and Sinon But no one of them worked to me, unfortunately. May 23, 2025 · Learn how to resolve common Chai errors with this detailed step-by-step guide. /constants'; SyntaxError: Unexpected token 'export' Not quite sur The "Uncaught SyntaxError Unexpected token 'export'" occurs for 2 main reasons: Jan 2, 2024 · For cases where you control the source of the error, modify your export statements to adhere to CommonJS when dealing with Node. The clue to problem might be a small hint at the beginnig of the error you might see in the cmd line : Dec 22, 2022 · Let’s start by installing the dependencies: npm install --save-dev mocha chai @types/mocha @types/chai ts-node global-jsdom ignore-styles @testing-library/react Open package. ts, I export all the definitions (export * from blah) for use by the client as shown at the top of this post. Jest encountered an unexpected token This usually means Posted by u/Nice_Ad8308 - 1 vote and 11 comments. Why it occurs in TypeScript Dec 28, 2023 · To clarify some points: Chai 4 is still available and supports older non-standard module formats like cjs. What I did first was start all over: Jul 3, 2023 · Jest tests are failing because of an unknown unexpected token "export" Asked 2 years, 6 months ago Modified 7 months ago Viewed 11k times 步骤4：重新执行测试现在，我们已经完成了所有必要的配置。我们可以重新执行JEST测试，看看是否仍然会遇到Unexpected token ‘export’ SyntaxError错误。通常情况下，这个问题应该已经解决了。示例说明让我们来看一个简单的示例，演示如何在使用uuid库时避免Unexpected token ‘export’ SyntaxError错误 Nov 9, 2022 · When I run my tests using Jest, I got an SyntaxError: Unexpected token ‘export’ from node_modules/@sendbird/chat/sendbird. Oct 8, 2024 · 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. Chai is adhering to the semver contract; version 5 is a breaking change which drops support for non-ESM. 1 NPM Version: 3. 0 run jest test yarn test Curren The SyntaxError: Unexpected token 'export' (and its counterpart, Unexpected token 'import') is a common error in JavaScript that occurs when you try to use the ES Module syntax (import / export) in an environment that is not configured to treat your file as a module. test script Mar 17, 2024 · ES6 中的 Unexpected Token Export 错误是一个常见的语法障碍。本文探究了这个错误的原因，并提出了有效的解决办法，如使用 Babel 转译器、升级浏览器和检查代码语法。此外，本文还提供了有关 Babel 转译器的好处、代码示例和常见问题解答，帮助开发人员理解和解决这个问题。 Oct 14, 2024 · Im working on a NestJS project which used to run on node v16. Here’s what that conversion might look like: Oct 19, 2025 · The SyntaxError: Unexpected Token 'export' error in Jest TypeScript projects can be a common roadblock, but by understanding the root causes and following the usage methods, common practices, and best practices outlined in this blog post, you can effectively resolve this issue. Here’s how you can import the expect interface: Jan 17, 2024 · 在JavaScript中，ES6模块提供了export和import关键字，用于实现模块化编程。然而，如果你在使用这些关键字时遇到了“Uncaught SyntaxError: Unexpected token ‘export’”的错误，可能是由于以下原因：语法错误：确保你的代码中export和import的语法正确。 Jul 22, 2020 · Describe the bug It seems there is a problem with exporting different versions inside of uuid. js application but in an incorrect way. 97K subscribers 578 views 10 months ago #export #typescript #webdriverio Jun 3, 2019 · Hello! I get SyntaxError: Unexpected token export when trying to running my test. 0" . 7. SyntaxError: Unexpected token export occurs when you try to use the export keyword in the wrong place. json with any text Mar 15, 2017 · Uncaught SyntaxError: Unexpected token export #2608 Closed Hosar opened this issue on Mar 15, 2017 · 4 comments Feb 9, 2021 · コンパイルエラーで下記のようなログが表示されます。 > export default async function testPupperter(_params) { > ^^^^^^ 下記の Jest unexpected token 'export': How to fix Jest is a popular JavaScript testing framework. This can be fixed by checking the syntax of your code and making sure that you are using the export keyword correctly. exports instead of export). I tried every option with similar issues, but I can't get it to work. js:3768:1) Sep 12, 2021 · Closed 3 years ago. js'; ^^^^^^ SyntaxError: Unexpected token export Our code already use Feb 2, 2024 · If you are using imperative Chai API calls like chai. exe" " Sep 29, 2023 · mui-x/charts error: SyntaxError: Unexpected token 'export' Asked 2 years, 3 months ago Modified 1 year, 7 months ago Viewed 5k times Dec 13, 2022 · 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. 1, which meant I needed to convert every file in my project to ESM modules (import and export default). com Aug 10, 2023 · The export keyword is a part of JavaScript specification that allows you to export a module so that other modules can use that module using the import keyword. contains Feb 17, 2022 · Jest & Material UI - Unexpected token 'export' Asked 3 years, 11 months ago Modified 3 years, 11 months ago Viewed 3k times Apr 9, 2019 · Trying to test a rest endpoint, but im getting index page should render, hello world should render hello world 200: SyntaxError: Unexpected token { in JSON at position 25 Not sure what im doing w Jan 8, 2020 · Getting SyntaxError: Unexpected token export when trying to import a function to test with Mocha Asked 5 years, 11 months ago Modified 5 years, 11 months ago Viewed 1k times May 5, 2017 · 1 while running the karma test cases, I am able to get Uncaught SyntaxError: Unexpected token export error. However, there are plenty of existing and proposed APIs that have completely unrelated types between their getters and setters. ts error: SyntaxError: Unexpected token 'export' on Oct 20, 2020 Using Chai with ESM and Plugins This guide provides an overview of how to use Chai with ECMAScript modules (ESM) and plugins, including examples using the chai-http plugin. Looks like old version has been updated with the breaking change. Since last couple of days we are seeing following errors. js:49 export default function typeDetect (obj) { ^^^^^^ SyntaxError: Unexpected token export Nov 9, 2017 · We have locked our version on chai but we now get the following error: /src/node_modules/type-detect/index. 13:26:11 SyntaxError: Invalid or unexpect Jul 11, 2016 · I tried the above (Export and ES6) with TypeScript (. spec. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules".

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