Browserslist logo by Anton Popov

Check your Browserslist config with target browsers for popular mistakes.

npx browserslist-lint

Or try online: browsersl.ist

Rules:

• missedNotDead: lack of no dead with queries like last 2 versions.
• countryWasIgnored: bad coverage in some country with >10M Internet users.
• limitedBrowsers: ignoring browsers diversity by calling only a few browsers directly in config.
• alreadyDead: browser with not is already in not dead or defaults.

This project is also available as a pre-commit hook. Please add the following to your pre-commit configuration.

repos:
 - repo: https://github.com/browserslist/lint
 id: browserslist-lint

import { lint } from 'browserslist-lint'
lint('defaults, not ie 11') // => [{
 // id: 'alreadyDead',
 // message: '`not ie 11` already in `defaults`'
 // fixed: 'defaults'
 // }]
// Without option with find Browserslist automatically
lint() // => [{ id, message, fixed }]