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Use `satisfies` operator for type validation without widening: `const config = { ... } satisfies Config`.

typescript
Style Guide
TypeScript Defaults
#c7b3c9e542a934f8First seen Sep 26, 2026

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Saves the agent time by directly specifying the `satisfies` operator pattern for TypeScript type validation without widening, which it could learn from docs but benefits from explicit guidance.

Helpful8/10

Saves the agent time discovering this

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