Magical TypeScript features and how they help projects like NgRx
summary
TypeScript 3.7 and later features get applied to NgRx v8 to cut boilerplate and enforce correct usage: optional chaining adoption, strict mode with compilerOptions.strict=true, and built‑in conditional types like Exclude/NonNullable remove runtime surprises. createEffect’s config (dispatch true|false) actually controls the function’s inferred return type so wrong mappings fail at compile time, and createAction returns callable objects while forbidding user payloads from using the reserved type property.
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