Function isKeyOf

isKeyOf<S extends object>(
table: { readonly [K in string]-?: unknown },
key: string,
): key is keyof S & string
Validated narrowing of a wire key into ANY exhaustive per-field table — the audited bridge.
Type Parameters
- S extends object
Parameters
- table: { readonly [K in string]-?: unknown }
- key: string
Returns key is keyof S & string