danielrosenwasser/typescript-eslint

typescript-eslint is a tool that helps developers catch mistakes in their TypeScript and JavaScript code before it ever runs. Think of it as a smart proofreader for your codebase, it scans your files, flags potential bugs, enforces consistent coding styles, and points out patterns that are likely to cause trouble down the road. If you've ever wished your editor could warn you about sloppy code the way a spellchecker flags typos, this is essentially that. At a high level, the project bridges two widely used technologies: TypeScript (a language that adds type safety to JavaScript) and ESLint (a popular linter that analyzes code for errors and style issues). On its own, ESLint was built for plain JavaScript and doesn't fully understand TypeScript's extra features. This project provides the glue, parsers, plugins, and rules, that lets ESLint read and check TypeScript code properly. The repository is organized as a "monorepo," meaning it houses multiple related packages in one place rather than spreading them across separate repos. The people who use this are developers and teams working in TypeScript who want automated help keeping their code clean and bug-free. For example, a startup building a web app might use it to make sure every developer on the team follows the same formatting conventions, or to catch common mistakes like unused variables or unsafe type conversions before they make it into production. It's effectively a standard part of the TypeScript toolchain at this point, if someone is linting TypeScript, they're almost certainly using this. The README itself is fairly minimal, pointing readers to the project's website for full documentation rather than explaining features in detail. What's notable is that the project is entirely community-driven, supported by both code contributors and financial backers, and released under a permissive open-source license that lets anyone use it freely.