ESLint
In plain terms
A configurable tool that finds and fixes problems in JavaScript code.
Going deeper
ESLint analyzes code for errors, bad patterns, and style violations based on configurable rules, often auto-fixing them. It enforces consistency across a codebase.
Under the hood
Pluggable rules and shareable configs (Airbnb, etc.) catch bugs early; integrates with editors and CI.
Examples
Code-quality gates, team style enforcement, CI checks, editor integration.
Think of it like...
Like a meticulous proofreader flagging mistakes and style slips as you write.