ESLint

JavaScript and TypeScript code quality and bug detection

ESLint is an open-source static analysis tool for identifying problematic patterns in JavaScript and TypeScript code. It is highly configurable and widely adopted in the JavaScript ecosystem.

Official website

At a glance

Price from	Free and open-source
Best for	JavaScript and TypeScript developers seeking lightweight, configurable linting

From ESLint's own website.

Company facts

Social profiles

Facilities and features

Its website also mentions:

Integrations

What stands out

ESLint automatically fixes many identified problems.

“Many problems ESLint finds can be automatically fixed.”ESLint, own website

The product allows custom rule configuration.

“Preprocess code, use custom parsers, and write your own rules that work alongside ESLint's built-in rules.”ESLint, own website

Worth knowing

Limited to JavaScript and TypeScript only
Requires additional plugins for security-focused vulnerability detection

How it ranks

ESLint is ranked 9th of 10 in Best code quality tools (Lister Score 82.0).

#9 in Best code quality tools · Lister Score 82.0

ESLint statically analyses JavaScript code to identify issues. This open-source utility helps developers find and fix problems effectively.

Automatically fixes many identified problems.

How the score is made up: fit to this ranking's criteria 40; evidence on its own site 20; how complete its published information is 14; buying information on its own site 8.

“ESLint has been critical in helping developers write high-quality JavaScript for years. We love that it catches common issues early and often.”ESLint, own website