eslint

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      ESLint is a static code analysis tool for identifying problematic patterns found in JavaScript code. It was created by Nicholas C. Zakas in 2013. Rules in ESLint are configurable, and customized rules can be defined and loaded. ESLint covers both code quality and coding style issues. ESLint supports current standards of ECMAScript, and experimental syntax from drafts for future standards. Code using JSX or TypeScript can also be processed when a plugin or transpiler is used.


      History


      Both JSLint and JSHint were lacking the ability to create additional rules for code quality and coding style. After contributing to JSHint, Zakas decided to create a new linting tool in June 2013, ESLint (originally called JSCheck, but renamed a month later), where all rules are configurable, and additional rules can be defined or loaded at run-time.
      In April 2016, the ESLint project joined the jQuery Foundation. Later that year, jQuery Foundation merged with Dojo Foundation to become JS Foundation as a Linux Foundation project.
      In October 2017, the ESLint project became a "Graduate Project" of the JS Foundation through its mentorship program.
      As of March 2019, ESLint is part of the OpenJS Foundation, following a merge between the JS Foundation and Node.js Foundation.


      Adoption


      JetBrains provides integrated support for ESLint in their WebStorm code editor, which runs the ESLint software as configured for the current text file, and displays any warnings near the offending lines of code in the editor.
      Since 2016, the Vue.js project provides an ESLint plugin to automatically validate use of Vue.js templates and other features. Since 2018, this plugin is also promoted in the wizard for creating new Vue.js projects.
      In October 2018, the React project (developed by Facebook) published an official ESLint plugin to help enforce their coding rules.
      As of 2025, ESLint is the most commonly used JavaScript linter and is being downloaded over 43,000,000 times per week.


      References




      External links


      Official website

    Kata Kunci Pencarian: eslint

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    eslint

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    javascript - How to use ESLint with Jest - Stack Overflow

    Jul 26, 2015 · This is a bit too brute force for an actual answer, but you could have a separate linting task that manually uses aneslint-test file with a glob, e.g. eslint **/__tests__/*.js -c eslint-test.yml. That said, I don't think there's much danger of a jest or beforeEach global leaking out into production code ;) –

    javascript - ESLint - 'process' is not defined - Stack Overflow

    Jun 17, 2018 · As of version 9 of eslint, the old style of configuration is deprecated. The way it's supposed to be done now is: import globals from "globals"; import pluginJs from "@eslint/js"; export default [ {languageOptions: { globals: globals.node }}, pluginJs.configs.recommended, ]; (obviously, different plugins if you use typescript.)

    How to disable multiple rules for eslint nextline

    Jun 22, 2019 · For those converting eslint-disable-next-line to eslint-disable (for multiple lines), remember two things. 1. /* */ instead of // 2. It's eslint-disable and not eslint-disable-next-line. Just reiterating coz I did the same and had to search many more things due to the 2nd point. May be it's helpful for someone else in the future. –

    typescript-eslint "SyntaxError: Cannot use import statement …

    Feb 23, 2024 · I try settup eslint with typescript-eslint. My config from docs: import eslint from '@eslint/js'; import tseslint from 'typescript-eslint'; export default tseslint.config( eslint.configs.recommended, ...tseslint.configs.recommended ); In IDE error: import eslint from '@eslint/js'; ^^^^^ SyntaxError: Cannot use import statement outside a module

    How can I define tab size to 4 in ESLint? - Stack Overflow

    ESLint lints the source files (or plain text), and all the source files have at the location of a tab is a tab character. There aren't separate tab characters for different tab lengths. There aren't separate tab characters for different tab lengths.

    eslint throws parsing error unexpected token on named export

    If that experimental feature is the only reason you need babel-eslint and you don't want to deal with the overhead, you can use export { default as Main } from './Main/Main';, which is valid ES6 and will work fine in the default parser. –

    Is it possible to show warnings instead of errors on ALL of eslint …

    Jun 5, 2018 · I found that none of the options already answered were versatile enough for my use case - specifically, I wanted most of the rules to still throw errors, but the ones that matched a RegEx to throw warnings - so I created my own package: editlint.

    ESLint ignore specific rule for a specific directory

    Dec 24, 2016 · ESLint will automatically look for them in the directory of the file to be linted, and in successive parent directories all the way up to the root directory of the filesystem. This option is useful when you want different configurations for different parts of a project or when you want others to be able to use ESLint directly without needing to ...

    New eslint errors with the @typescript-eslint/no-unsafe-* rules

    Jun 11, 2020 · ESlint can not resolve the absolute import of your module, which makes it to infer your class type as any. Make sure baseUrl and paths in tsconfig.json file used by ESlint are defined correctly. @see Typescript – Module Resolution

    How to use new ESLint Configuration File syntax with extensions …

    Nov 17, 2023 · You can directly import a configuration and declare it within the new eslint.config.js, however if that configuration extends other configurations this won't work - I can't see your '@ui' configuration definition so I have assumed in my code block that it does not extend configurations within itself (if it does, see blog link below on using ...