ESLint

ESLint has been the JavaScript linting standard for a decade. It's also slow — painfully slow on large codebases, slow enough to bottleneck CI pipelines and irritate developers running it on save.

Oxlint, written in Rust, is 50-100x faster and covers the most common rules out of the box. The migration is straightforward for most projects. ESLint's plugin ecosystem is its remaining advantage, but the performance gap is so large that it's worth checking whether the plugins you depend on have Oxlint equivalents before defaulting to ESLint on new projects.

If you have a working ESLint setup, there's no urgency to migrate. But for new projects, start with Oxlint.