anti-slop

Anti-slop is 15 Oxlint rules that reject TypeScript which throws away type information. Chained as-assertions, functions returning unknown, object as a parameter type, ad hoc typeof narrowing where a parser belongs, Vitest and Jest module mocks. The name points at what coding agents write when they need something to compile. MIT, free.

It is built to be vendored, not depended on. There is no npm package. You copy the rules into your repo, register the plugin entry point in oxlint.config.ts, and from then on they are your files to edit. A bundled agent skill does the copy and wiring. Updates are a manual re-copy, by design.

Solo developers shipping agent-written TypeScript: worth an afternoon. Small and medium teams on oxlint: read all 15 rules first, because no-module-mocking and the required comment on every type assertion will reshape your tests and your boundaries. Large teams: this is an addition to eslint/eslint or SonarSource/sonarqube, never a replacement.

The catch is the age. This landed days ago with a dozen commits and no tagged release. The rules are one developer's strong opinions, and a few (banning Reflect.get outright, banning object parameters) will fight code that is perfectly fine. Vendoring means you own the fallout, which is the point and also the work.