Ts node unexpected token export json. Create a file and name it .

Ts node unexpected token export json 1. g. Tabs (yes, tabs that you can produce with the Tab key!) Any stand-alone slash \ (but for some reason not /, at least not on Chrome. I worked around this by adding these modules to the transformIgnorePatters in my Jest config, but this doesn't seem like the way to go. Here's how to handle this: Exclude JSON Files: Unless you specifically need to lint your JSON data, tell ESLint to ignore it. When you build your project, it should point to where your entities are. mjs export default { testEnvironment: 'node', extensionsToTreatAsEsm: ['. 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. Asking for help, clarification, or responding to other answers. Thank you 🙂. But it should be like first compile . To fix this issue, you need to check what the server is sending back and make sure it's returning a JSON object. Therefore jest fails, because it . 1 but the nullish coalescing operator (??), is relatively new and was added in node v14. /', }) // add any custom config to be passed to Jest /** @type Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company In my project I was upgraded nodejs version to 20 and after that test cases failed. ts> (entry point of my typescript project), i get an unexpected token 'export' in the terminal, at the default export from "Unexpected token in JSON" when using `ts-node --compilerOptions` or `ts-node -O` Firstly, instead of using --compilerOptions/ -O, I recommend placing those overrides in your the problem was ts-node itself, it seems that doesn't support ESM modules and there are some symbols/tokens that doesn't know how to parse correctly. js'; ^^^^^ SyntaxError: Unexpected token 'export' What is the right way to solve this? I'm also getting this issue with node 13. 22. In rare cases, moduleTypes Successfully merging a pull request may close this issue. js files of the current package, if you want to mix EsModule file PS G:\New folder> ts-node "g:\New folder\Session1. 0. json from node_modules regarding ESM. I was encountering a similar issue but fixed by adding below line to the top of my entry file (which was main. js - SyntaxError: Unexpected token import (18 answers) Unexpected token 'export' javascript; function; export; Share. json启动脚本"dev:esm": "node src/esm/index. js'; export const keys = process. ts-jest[config] (WARN) message TS151001: If you have issues related to imports, you should consider setting `esModuleInterop` to `true` in your TypeScript configuration file (usually `tsconfig. next/jest. script Unexpected token < in JSON at position 0" 2191. The transpiled JS on the failing one looks like this Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Expected Behavior When ts-node starts with ES6+ module types, it I've tried changing the module, target etc and I cannot resolve it. env:. To Reproduce. environment. My tsconfig. So, instead of using ts-node i ended up replacing it with tsx, that seems to have better support. You have left out important details of your setup which is why others cannot duplicate this problem. Files in my src folder:. You switched accounts on another tab or window. json is: "server": "cd server && ts-node --project Check your ts-config module settings to output to commonjs, and update your jest config's transformIgnorePatterns to transform your dependency since jest ignores node_modules by default. js makes it hard to transpile modules in node_modules, but you can modify the baked config in jest. json or . json (recommended) ts-node automatically finds and loads tsconfig. And you need to run node with the --experimental-modules flag. js) and add "data. I'm trying out typescript for the first time and am confused about the import/export procedures that I am used to using with es6. it forum post by lukenzy. js is a local file, not a node module. None of the popular solutions here were working for me either. SyntaxError: Unexpected token import- Node. map(res=> res. ts-node -O '{"module": "commonjs"}' . headers['content-type']); returns this: application/json; charset=utf-8. Try setting " "type": "module", " in you package. Alright, I am simply dumb. mjs like this:. Be sure to remove defition of global from vite. 3. this is an interface I am trying to export in a file called repl. . json file contains a top-level field "type" with a I was using a jest. /upgrade"; my code imports this with traditional tree shaking import { verify } from '@example/package' my package. json points your entities to your ts files in your /src folder. Edit your ESLint configuration file (. global ||= window; Make sure to add that before any imports. ts. in latest jest you do not need ts-jest and ts-node-dev, you also do not have to include jest. that's why by default jest doesn't transform node_modules. json and typings. remove the package eg. However, while running npm i, Search Terms ts-node esm "Uncaught SyntaxError: Unexpected token 'export'" Expected Behavior REPL should work in package - "type": "module", Actual Behavior I see last release v10. moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node']}; Share Add a Node 12 Since Node 12, you can use either the . error(ex); } I get this error: SyntaxError: Unexpected token in JSON at position 0. The latest ts-node does not require ts-node-script; that is the default behavior. json and yarn file (if you have one). I am trying to launch . @JTHouk the flag is needed only befor v13, now flag was dropped. My command in package. For me, it is ^10. At last, I found something. ts files to . parse() is using any of the following in the string values:. 1 or a higher node version. npm安装ts-node,package. config. So even if you include a package for transformation by adjusting transformIgnorePatterns, the package will run through the typescript compiler, but typescript will not remove those ESM import/exports. However, your answer fixed this for me. json somewhere in current or parent directory and {"type": "module"} in it and you can use ES6 imports. ts from the docs. \lib\index. how to fix unexpected token parsing error? 0. 9. json then I create a . You can then transfer your specific configuration into the newly generated tsconfig. All you need to do is to install it globally like you did with ts-node: npm install -g tsx Had the same problem when using ts-node in a monorepo (Angular + Express + single package. jest. js' const createJestConfig = nextJest({ dir: '. /dev. I have TypeScript setup for es modules, but maybe there is something else I'm missing, tsconfig. mjs extension, or set "type": "module" in your package. ts undefined:1 '{module: ^ SyntaxError: Unexpected token ' in JSON at position 0 I am writing a backend server for my app and decided to change babel-node executor to ts-node. (Use `node --trace-warnings ` to show where the warning was created) g:\New folder\Session1. ts There is a warning telling me that --experimental-loader is an experimental feature but I don't care because I only use it to debug the typescript code. NODE_EN You signed in with another tab or window. That's fine but you need to target NodeJS's module system, a derivative of CommonJS, via Typescript as noted or via another intermediate compiler to get that to work. Search Terms REPL Unexpected token 'export' #1563 has it, describes wrong, closed with no fix. I prefer to use Babel, to trigger the Node. 2 GIVE MJS FILE NAME IN YOUR EXPORT LIKE ( import { first } from '. In this case, lodash-es specifically exports es modules, so you HAVE to let jest transform that code. I am trying to generate React SVG icons components by using below TS script: scripts/generate. If you run eslint in a different working directory to the folder containing tsconfig. I usually elect to not deal with it by renaming the file to tsconfig. I updated my jest. js:; export const magicNumber = 42; If you are using Typescript, I added the json() plugin after typescript:. So you are getting . SyntaxError: Unexpected token < in JSON at position 0. js files as EsModule files, instead of as CommonJS files. npx nx migrate latest didn't create any migration file (so it said). org/ts-node/docs/troubleshooting. js'; import { pKeys as prodKeys } from '. Can't import ES6 react module. mocha --compilers ts:ts-node/ Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog I believe your case is pretty much similar to these ones: amcharts4 issue #2133 - github OR Jest encountered an unexpected token. 5. declare global { namespace NodeJS { interface ProcessEnv { GITHUB_AUTH_TOKEN: string; NODE_ENV: 'development' | 'production'; PORT?: string; PWD: string; } } } // If this file has no import/export 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 Use the CLI to help migrating it: ts-jest config:migrate <config-file>. But it can't complile jsx. I have this excpetion Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. What am I doing wrong? I want to parse the JSON into a JS object. mjs Search Terms REPL Unexpected token 'export' #1563 has it, describes wrong, closed with no fix. json file on root directory. js version than v17. Was this fixed? Why d There are several threads on this when generating code for a ". e. js, but the following code should do what you are trying to achieve: import { keys as devKeys } from '. To solve the "SyntaxError: Unexpected token 'export'" error, make sure: to set type to module in your package. ESLint is built for JavaScript, and JSON's curly braces and commas can throw it off. Use --skipProject to skip loading the tsconfig. From what I can tell, typescript developers think the generated export {}; is a feature in those files and provide the rationale (which many disagree with). html. Follow asked Sep 12, 2021 at 17:09. mjs extension. File: rollup. js (through tsc) there was no error, but I can't launch . NODE_ENV === 'production' ? null : devKeys; export const pKeys = process. json. ts to tsconfig. – Sadra Abedinzadeh You cannot use export inside if statements in node. 0. json when using create-react-app. This is why you're getting the "Unexpected token '<'" error, because the HTML is not valid JSON. So, the ormconfig. I have issues with Jest picking up an internal library, Jest would display 'unexpected token' errors wherever I had my imports from this library. js docs, but still same issue. 0 with ts-node for typescript To do so, just fix the scripts in the following way. json – Daniel Commented Sep 30, 2024 at 16:58 Issue : I am using ts-jest to test my typescript library. mjs') Share. ) (For a full list see the String section here. foo. prettierign I'm getting SyntaxError: Unexpected token 'export' on some node_modules, which are not transpiled (I guess?). ts file and then trying to run the same . Improve this question. ts wile import 'core-js/es6'; import 'reflect-metadata'; This works great on one project, however, another project with the same tsconfig. ts then run the generated js file using node file_name. Use ts-node --showConfig to help debug configuration issues: https://typestrong. After converting . Using the following command worked for me with node v14. json as well as the ts-loader configured in the webpack config I get Uncaught SyntaxError: Unexpected token import. 1 many months ago (Jul 14, 2022). ts in vue project). env. json()); is expecting a json response Share Improve this answer There could be a bunch of things that can go wrong when saving a file that would prevent correct parsing. I installed ts-node and copied the jest. In my case what I did: rm -rf node_modules/ for each packages & apps upgrade to the latest nest. js import typescript from "rollup-plugin-typescript2"; import resolve Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog So I tried installing the prettier today, I followed the instructions straight from the docs. Provide details and share your research! But avoid . try { bodyObj = JSON. Expected Behavior When ts-node starts with ES6+ module types, it behaves as usual as pre-ES6 module types, which is having a smooth "undefined Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. npm install --save-dev --save-exact prettier echo {}&gt; . However, despite following dozens of how-tos and tutorials, I am not able to fix the issue below. json is configured as: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I had to do this to get ts-node, ts-jest and d3 all working together. svelte files, not in the code editor but the server. This causes node to handle *. I used this as source and modified as per my requirement. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. /verify"; export * from ". And this: console. 1: node --loader ts-node/esm --experimental-specifier-resolution=node index. mjs" 运行 npm run dev:ts 报错SyntaxError: Unexpected token 'export' Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. backup or something, then invoking tsc --init to generate a known good file. As I understand the announcement typescript >5. d. ts command. This is my webpack. I use for compilation ts-node package. Delete your node_modules folder, package-lock. it's not pla Those who are using create-react-app and trying to fetch local json files. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. because it is a JS file with TS syntax, or it is published to npm as uncompiled source files. When using that, in conjunction with renaming the When i try to run this code using ts-node <path/to/my/index. Then i'm start the app by command ng serve in console i see error: VM1018:2297 Uncaught SyntaxError: Unexpected token export at eval (<anonymous>) at webpackJsonp. So to use the ?? operator you need to update node in repl. json or use the . Which you can do by following this repl. import nextJest from 'next/jest. To fix this, you can set tsconfigRootDir to __dirname, which would make the parser resolve the project configuration Make sure the back end returns json data by using res. You are outputting the gulpfile using --module es2015, probably via a co-located tsconfig. /router' const dev = process. // In . ts file using tsc file_name. json`). node --experimental-modules my-app. json, @typescript-eslint/parser will not be able to locate the file. 1 and you are currently using v17. Noe that changes the handling of any *. json have jsx compile option. ts file using node file_name. with ts-node), and not to run them directly with node. Force clean the entire NPM cache by using following command. Reload to refresh your session. js. ts" (node:5020) Warning: To load an ES module, set "type": "module" in the package. /pg. ts but that is not the solution. /BrowserDetection'; ^^^^^ SyntaxError: Unexpected token export 19 | } from 'office-ui-fabric-react/lib Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company 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 Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. ts file and the quotes kept getting stripped off "uuid" and the fix didn’t work. x I'll stick with this solution for now. How to Once you have installed @types/node in your project, you can tell TypeScript exactly what variables are present in your process. Create jest rafgraph changed the title TS config error: SyntaxError: Unexpected token 'export' TS jest. replit Inside it, copy and paste the following code: As others have stated, the problem is that your tsconfig. json is not applied to server. NODE_ENV === 'production' ? prodKeys : null; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company By default, the projects (in parserOptions) are resolved relative to the current working directory. json file and make sure to compile your TypeScript files (e. Most ts-node options can be specified in a "ts-node" object using their programmatic, camelCase names. Would someone be able to share a working config for Jest or help me out in any other way? Try setting ""type": "module"," in you package. Create a file and name it . ) I am trying to build an angular + typescript + webpack application. ts error: SyntaxError: Unexpected token A lot of node modules export ES5 so that jest can run it out of the box without transform. json("Your text here"); This is because your map function . Currently, I'm migrating a react project Typescript but to do it as fast as possible and avoid more problems I' 原文地址:使用ts-node运行ts脚本以及踩过的坑 - 不作声 - 博客园-----我碰到的情况: 跟着下面的案例学习ts. js:11 export { default as _BrowserDetection } from '. /v1. /Math"; export * from ". As in create-react-app, webpack-dev-server is used to handle the request and for every request it serves the index. Having setup my project from the latest svelte template with Typescript enabled, faced a similar "unexpected token" complaint when trying to import types into . eslintrc. 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. By making it "^uuid$" this started working for me. 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. ts dynamically compiled by ts-node. ts file. json file. I use nextjs import koa from 'koa' import next from 'next' import clear from 'clear' import body from 'koa-bodyparser' import cors from 'koa-cors' import logger from 'koa-logger' import Api from '. For this example foo. js or lacking any extension will be loaded as ES modules when the nearest parent package. it's not plain JavaScript. parse(body); } catch (ex) { console. I'm use mocha for testing tsx component from command line. ts" file, even for a commonjs target. Nodejs v13 requires to have package. I donc use "type": "module" in the package. ts file in all my apps to match your snippet, and it worked. ts and change the import in bar. 快速上手 TypeScript | Vue3 入门指南与实战案例. /src/components'; import * as fs from 'f You signed in with another tab or window. I managed to solve it by installing the below presets and having the babel configuration file as follows: It seems like the server is returning HTML instead of JSON. Node 9 In Node 9, it is enabled behind a flag, and uses the . One other gotcha that can result in "SyntaxError: Unexpected token" exception when calling JSON. json file, jest fails to import the import of my import which is causing npm run test command to fail with SyntaxError: Unexpected token 'export' at first line of my bar. export function flatten (target, opts) { ^^^^^ SyntaxError: Unexpected token 'export' I made sure my jest was properly installed and set up, as per Next. /core"; export * from ". To solve the "Uncaught SyntaxError: Unexpected token import" in TypeScript, set the module option to commonjs in your tsconfig. /scripts/generateTranslationFiles. 6 now respects the package. From doc: Files ending with . json file in Node. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog For anyone using create-react-app, only certain jest configurations can be changed in package. I am importing a library package that exports its components through an index file as follows: export * from ". If the server is not set up correctly, you'll need to correct that. ts: import * as path from 'path'; import * as iconDefs from '. json here. ts:2 export {}; ^^^^^ SyntaxError: Unexpected token 'export' at Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company This problem can be occur when you are trying to work with an old react repository which is developed with a lower node. js that you might be affected by this issue. json" (or other JSON files) to the "ignorePatterns I had the latest version of nx, i. ts I also was getting the same problem because I was trying to compile the . In my case it was failing because I did not set properly the typescript support for Jest. ts: const { optimize: { CommonsChunkP It's worth noting if you're using Next. This means that a file is not transformed through TypeScript compiler, e. Via tsconfig. prettierrc. And I tried with many solution with jest config, but it didn't work unless and until I have created jest. it uses node v12. it. window. json file is 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. To solve this, you need to eject the app and modify the webpack-dev-server configuration file. ts SyntaxError: Unexpected token 'export' in Nodejs project with Typescript and Webpack 1 webpack tsx Module parse failed: Unexpected token It looks as though you are using a gulpfile. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company export { default as v1 } from '. cd <root>/ yarn / installs all the deps. 16. js to foo. to set type to module on your JS script tags in the browser. We recommend this because it works even when you cannot pass CLI flags, such as node --require ts-node/register and when using shebangs. ts file with ts-node because of issue: "SyntaxError: Unexpected token " My tsconfig. json). You signed out in another tab or window. New-line characters. ts file as console app. log(response. x of jest so I think since I'm just now upgrading from 27. I can change foo. /prod. xwvqergx coht vhhuvs ykxbpo uqz cfojkp ejq gkzrihd naltv icz loa uctkeenz rlzxtm rjewr ctvo