Static analysis and linting complexity-report (deprecated) JSCodeSniffer (online, deprecated) JavaScript Lint JSHint JSLint lockfile-lint ls-lint packagequality.com plato publint TSLint (deprecated) xo secretlint scriptlint Google Closure Linter (deprecated) Prettier Biome Oxlint Rslint Codecrumbs es6-plato code-complexity complexity-report (unmaintained) typhonjs-escomplex ESLint ESLint Plugins eslint-plugin-perfectionist