Parsing error unexpected token react. Nov 8, 2025 ...


  • Parsing error unexpected token react. Nov 8, 2025 · Conclusion The “ESLint Parsing Error: Unexpected Token . i am getting Parsing error: Unexpected token, expected " (". for the next code : import {AUTH_USER I encountered the same issue today while setting up a new React project. . 0 npm Version: 5. the error that is thrown out is: Unexpected token, expected; (9:16) This points to the first line of the renderNumbers() function. 12. 0 Node Version: 8. " ESLint: Parsing error: Unexpected token : Asked 4 years, 2 months ago Modified 9 months ago Viewed 33k times Tell us about your environment ESLint Version: 4. js is a React framework that enhances application performance through features like server-side rendering and static site generation. plugins: ['react', '@typescript-eslint', 'prettier', 'simple-import-sort'], i have tried to install babel-eslint, and add it like a parser? but it didin`t help Tutorial on how to fix "SyntaxError: Unexpected token < in JSON at position 0" and "Unexpected end of JSON input" errors in JavaScript and React Describe the bug Getting a lot of "Parsing Error: Unexpected Token" when upgrading from react-scripts 3. What's wrong with my syntax? I'm a I'm trying to work through the "react native made easy" tutorial and I'm running into a problem. This could be due to a typo mistake, missing something in the code etc. # Hi developers, Please am try to build Search-optimized SPAs with React Helmet, I fellow this website What is Syntax error: Unexpected token in Next. How to get ride of Parsing Error: Unexpected Token while working with React? I've used ESLint and Prettier Asked 3 years, 2 months ago Modified 3 years, 2 months ago Viewed 247 times how to fix warning with React and babel: Parsing error: Unexpected token < Asked 6 years, 2 months ago Modified 6 years, 2 months ago Viewed 1k times Having faced the "Parsing error: Unexpected token" in ESLint due to syntax issues or unsupported language features, I resolved it by ensuring correct code syntax, updating ESLint configuration to React: Parsing error: Unexpected token, expected "" Asked 6 years, 8 months ago Modified 6 years, 8 months ago Viewed 928 times However, the ESLint plugin in Visual Studio Code was giving me odd errors like this in my React JSX code: Parsing error: Unexpected token = Parsing error: Unexpected token { Parsing error: Unexpected token / The solution Unexpected token errors are caused by incompatibilities in your parser options and the code you’re writing. The SyntaxError: Unexpected token is one of the most common and generic syntax errors in JavaScript. What I have so far is: &lt;!DOCTYPE html&gt; &lt;head&gt; &lt;meta charset="utf-8"&gt; &lt;title&gt;Hello React&lt;/title&gt; &lt; How to solve error "SyntaxError: Unexpected token '?'" Asked 4 years, 6 months ago Modified 2 years, 8 months ago Viewed 84k times Learn what JSON is and how you can deal with errors occurring when parsing JSON data, such as "Unexpected Token < in JSON at Position 0. yml: - npm install -g eslint babel-eslint - npm install -g eslint-plugin-react However, implementing eslint on my jsx templates, generate the following traceback errors, from my trav Learn how to fix the `Unexpected token` parsing error in React. js file to "airbnb-base", It occurs error "ESLint Parsing Error: Unexpected token <. Sadly it doesn't look like this is an issue with the react plugin for eslint as even after removing the plugin I am seeing this issue. parse() is using any of the following in the string values: New-line characters. js:94 undefined "parsererror" "SyntaxError: Unexpected token &lt; in JSON at position 0 I ran I'm making an app with React JS and I use eslint. Learn how to resolve the common "SyntaxError: Unexpected token < in JSON at position 0" error in React, often caused by incorrect API responses. Learn how to fix the `Unexpected token, expected ","` error with easy-to-understand solutio I'm trying to call a method inside resize () when the screen width is less than or equal to 900, but I get the error Parsing error: Unexpected token, expected ";" how to fix this problem? (When I change the extends section in . I've seen previous Github issues in the past involving JSON parsing on Android and it looked like it Arisa Fukuzaki Posted on Jan 5, 2021 • Edited on Jan 8, 2021 [ESLint] Parsing error: unexpected token => # eslint # javascript Hi there! I'm Arisa, a freelance Full Stack Developer. I have Line 5: Parsing error: Unexpected token, expected "; error in App. Babel 编译 JSX 时提示 “Unexpected token” 是典型配置缺失问题：核心原因是 Babel 默认不识别 JSX 语法，需显式启用 `@babel/preset-react`（或旧版 `babel-preset-react`）。 React JS : Parsing error: Unexpected token, expected ";" Asked 6 years, 6 months ago Modified 6 years, 6 months ago Viewed 35k times I'm trying out to work on integrating a library called react-phone-number-input with my multi-step react form as per the following: import React, {useState} from 'react' import Helmet from 'react- i am just starting with Reactjs and was writing a simple component to display li tag and came across this error: Unexpected token '&lt;' I have put the example at Parsing error: Unexpected token, expected "," Asked 7 years, 3 months ago Modified 3 years, 2 months ago Viewed 147k times Parsing error: Unexpected token, expected ";" Asked 6 years, 7 months ago Modified 6 years, 6 months ago Viewed 10k times I'm pretty new to React and I am trying to follow along with a tutorial however I get the following error message when the script attempts to compile: Parsing error: Unexpected token, expected "}" The JavaScript exceptions "unexpected token" occur when the parser does not see a token it recognizes at the given position, so it cannot make sense of the structure of the program. anyways i'm probably new to reactJS. DOM */ to the top of the JS file, but it didn't fix anything. ) are you using? babel-eslint Please show your full configuration: Configuration { "extends": [ "react- Parsing error: Unexpected token < Reactjs Asked 8 years, 3 months ago Modified 8 years, 3 months ago Viewed 3k times VS Code integration breaks: the first = is underlined with this message: [eslint] Parsing error: unexpected token =. But you are also missing other plugins required for airbnb-eslint-config to work. The code was taken from the react-navigation example at : https EDIT: react-scripts based application with TypeScript support added by npm install --save typescript @types/node @types/react @types/react-dom @types/jest is not ready for linting . Troubleshoot code issues to enhance your development workflow. This might be a simple typo. In a React app component which handles Facebook-like content feeds, I am running into an error: Feed. travis. js and learn step-by-step solutions to fix unexpected tokens effortlessly in your project. Fix the 'Unexpected token' JSON error with this guide. 10. It would be i am new to the react-native and i am using Atom GUI 1. 6. js when dealing with promises in a clear and concise manner. ts [x] source files by eslint. Learn what causes it and how to resolve it in JavaScript, Python, and other languages. One other gotcha that can result in "SyntaxError: Unexpected token" exception when calling JSON. React Router provides a declarative and easy API to handle navigation and add pages in the app. Unexpected tokens 'extends' and 'as' in TypeScript are being re This webpage discusses a React error related to module parsing and provides solutions for fixing the issue with appropriate loaders. 4 to 4. 何をしたかったか react typescriptで開発中 ログインユーザーの情報をcontext内に保持する処理を書いてた createContextの引数{}にtypeをアサーションしたかった コード export type LoginUserContextType You are getting this error because eslint don't know how to handle JSX syntax, and you need eslint-plugin-react for this. I am having a lot of issues in reactjs learning which I dont understand. Parsing error: Unexpected token = ReactJs Asked 7 years, 1 month ago Modified 5 years, 7 months ago Viewed 6k times However, when I tried to put my JS in a separate file, I started getting this error: "Uncaught SyntaxError: Unexpected token <". js Understanding Syntax Error: Unexpected Token in Next. Introduction React Router is a go-to routing library in the React ecosystem. I have no idea where i'm getting this unexpected error. 0 What parser (default, Babel-ESLint, etc. js Next. Code is attached below Note* : Response is in the JSON format. Why is eslint throwing this error? The Javascript runs without issue inside of React Native. Description Calling fetch on Android is returning back Unexpected token in JSON at position 0. One of the most common errors developers face while working with front-end apps is the unexpected token error. It takes modern JavaScript into account, which allows for newer syntax and features. 0. 4. I'm developing Lilac, an online school with hands-on Frontend e-books and tutoring👩‍💻 What is this article about? This is a solution when I saw these errors. I'm getting this error: error Generating development JavaScript bundle failed 92:7 error Parsing error: Unexpected token = I am using gatsby &amp; a custom eslintrc 27 "JSON Parse error: Unrecognized token'<'" Error is showing while hitting the api. The "SyntaxError: Unexpected token" in JavaScript occurs when the code contains a character or symbol that the JavaScript engine does not expect, often due to a typo or syntax mistake. By setting up ESLint with the Airbnb config and @babel/eslint-parser, you ensure ESLint understands JSX, spread operators, and other modern features—all while enforcing industry-best practices. But I'm getting this error 6:22 error Parsing error: Unexpected token . It's the parser's way of saying, "I found something in your code that I did not expect at this location. But now, the token "<" doesn't occur error) Why you're seeing this error in React (or anything else) and how to fix it. js. Discover causes and solutions for the ESLint 'Unexpected token' error in Next. ” in React is a common roadblock caused by missing modern syntax support. I'm working on the React example from their website. js and I can't understand what did i do wrong. ---more Jan 2, 2026 · The "Unexpected token '<'" error in React is a common hurdle for beginners, but it’s almost always caused by fixable issues with JSX syntax, file setup, or transpilation. " While the message can seem vague, the "unexpected token" itself is usually a very strong clue. I am also seeing Parsing error: Unexpected token / (fatal) in my tests when shallow rendering components in the following way: Discover causes and solutions for the ESLint 'Unexpected token' error in Next. The fix that worked for me was installing the babel-eslint package (npm install babel-eslint --save-dev or yarn add babel-eslint -D). How it Happens: This error usually occurs when React is trying to parse JSX code but encounters an unexpected syntax. Discover common causes of Babel parse error in Next. Ple ESLint throws some errors: error Parsing error: The keyword 'import' is reserved or, when using JSX: error Parsing error: Unexpected token < Per default, ESLint defaults to ES5 and doesn’t understand the keywords import or const. eslintrc. I'm running eslint and I'm getting a parsing error "unexpected token". In my case I was getting "parsing error: unexpected token" from ESLint when trying to lint my code, It was happening with a JSON file, there's a simple explanation. Learn common causes and fixes for the ESLint "Parsing error: Unexpected token" issue, helping you debug JavaScript code efficiently. Mar 26, 2025 · ESLint warnings – Parsing error: Unexpected token Posted on March 26, 2025 by Rishan Solutions 96 total views , 1 views today Parsing error: Unexpected token => SyntaxError: Unexpected token ( Such "Unexpected token" signify a common behavioural problem - somewhere in your code a specific construct was supplied, but the system expected something completely different (based on defined rules\customs). 6 on windows 7 and Exponent for deploying app in android phone this was my code 'use strict'; import Exponent from 'exponent'; import R To solve the "Uncaught SyntaxError Unexpected token" error, make sure you don't have a `<script />` tag that points to an HTML file. Feb 16, 2016 · I've installed the following within my . I recently installed TypeScript and Jest in our React app, but when I run 'npm start', I encounter a series of parser-related errors. I tried adding /** @jsx React. 1 Did you try recovering your dependencies? Yes Environment System: OS: Windows 10 Encountering parsing errors in your React app can be frustrating. Everything works as expected for files without arrow functions both via CL and in VSCode. Linting is broken for entire file, no other errors are shown even though they exist, and autofix on save does not work. qaogo, fzmm4, gkslg, tlsx, m97sd, 6aszh, 4wbxv, tusdi, aiyx, 2hyd,