ESLint

ESLint

ESLint is a popular open-source JavaScript linter used to detect errors and enforce code style rules. It integrates with most editors and build tools to provide real-time feedback during development.
Development Code Quality
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ESLint alternatives ➤

ESLint: Open-Source JavaScript Linter for Code Style & Error Detection

ESLint is a popular open-source JavaScript linter used to detect errors and enforce code style rules. It integrates with most editors and build tools to provide real-time feedback during development.

What is ESLint?

ESLint is an open-source JavaScript linting utility originally created by Nicholas C. Zakas in 2013. It allows developers to discover problems with their JavaScript code without executing it. ESLint detects syntax errors and flags style issues - both code styles that could lead to errors and code styles that do not follow certain conventions or best practices.

Some of the key features of ESLint include:

  • Catching common JavaScript code errors like using undeclared variables, unused variables, missing semicolons, etc.
  • Enforcing consistent code style rules and best practices defined in configurable linting rules
  • Extensive configuration options using `.eslintrc` files for granular control over linting rules
  • Ability to create custom rules to enforce project-specific coding conventions
  • Parsers that support the latest ECMAScript standards, JSX, TypeScript, etc.
  • Editor integrations so linting errors display inline as you code
  • Command line interface to run across an entire project
  • A large library of predefined rules as plugins
  • Support for plugins to add custom rules and features

ESLint has become the most popular JavaScript linter and is used extensively across open-source projects and commercial applications to improve code quality. It is highly customizable to meet a project's specific style guide needs.

ESLint Features

Features

  1. Linting
  2. Automatic code fixing
  3. Customizable rulesets
  4. Plugin ecosystem
  5. Editor integrations
  6. Config file support

Pricing

  • Open Source

Pros

Catches errors and enforces code style early

Highly customizable

Strong community support

Integrates into workflows

Improves code quality and readability

Cons

Can be complex to configure initially

Additional build step to run

May require rule tweaking to suit preferences

Not optimized for non-JavaScript environments

Official Links

Official Website
https://eslint.org

The Best ESLint Alternatives

Top Development and Code Quality and other similar apps like ESLint

Here are some alternatives to ESLint:

Prettier icon
Prettier
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JSHint
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Prettier

Prettier is an open-source code formatter created by James Long and contributors. It aims to format source code automatically and consistently by parsing code and re-printing it following a set of opinionated rules with a focus on maximum readability.Some key features of Prettier include:Supports many languages including JavaScript, TypeScript, CSS,...
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JSHint

JSHint is an open-source JavaScript code linter and static analysis tool used to detect errors and potential problems in JavaScript code. It analyzes code to check for bugs, inconsistencies, unused variables, complexity issues, and style issues that could lead to errors or make code harder to maintain.Some key features of...
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