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eslint-p

v0.15.0

Published

A drop-in replacement for ESLint 9 featuring multithreaded parallel linting.

Downloads

3,112

Readme

eslint-p · npm version

A drop-in replacement for ESLint 9 featuring multithreaded parallel linting.

IMPORTANT: Legacy .eslintrc configuration is not supported.

Installation

npm i --save-dev eslint-p
yarn add --dev eslint-p
pnpm add --save-dev eslint-p

Usage

All ESLint CLI options are supported, plus --concurrency to specify the number of linting threads explicitly.

Example:

npx eslint-p --fix --concurrency=4

Valid values for the --concurrency option are:

  • positive integers (e.g. 4): Maximum number of linting threads. The effective number of threads can be lower when linting only a few files.
  • auto: Choose number of linting threads automatically (default).
  • off: No multithreading, run like ESLint. This is not the same as --concurrency=1.

Normally, a performance improvement will be only noticeable on systems with 4 or more CPUs. Some plugins like typescript-eslint with type-aware linting can increase the time required to initialize a linting thread resulting in performance degradation when multithreading is used.

ESLint is installed as a dependency

This package has ESLint set as a dependency, so if you already have eslint installed, but with a different version than the one specified in the package.json of this package you might get inconsistent results between the CLI and the editor.

To check the version of ESLint used by this package you can use:

npx eslint-p -v

To avoid inconsistencies, install the same eslint version used by this package or remove the eslint dependency from your package.json.

You can find more information on this PR.