ESLint

Lesson in the Frontend Developer Roadmap · Stage 19: Linters & Formatters

Last updated 14 September 2026

What is ESLint?

ESLint is a JavaScript linter checking code for problems, maintains consistent style, and finds errors. Highly configurable with custom or preset rules. Supports modern JavaScript, JSX, and TypeScript. Integrates with editors and builds tools, offering automatic fixing for team consistency.

Study this in the interactive course See the whole Frontend roadmap

Free resources to learn ESLint

Official docsESLint Website
ArticleWhat is ESLint and How to Use it
VideoESLint Quickstart - find errors automatically

ESLint: common questions

Can I learn ESLint in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain ESLint in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this ESLint tutorial for beginners?

It is lesson 60 of 120 in the free Frontend roadmap, in stage 19, Linters & Formatters. If you are new to Frontend, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.