Difference in parameter inference between arrow functions and classic functions #50258
Description
In the example code below the arrow function has correct type inference while the function example is unable to infer the parameter type and falls back to any.
declare function monitor<T extends (...args: any) => any>(
extractor: (...args: Parameters<T>) => Record<string, unknown>,
executor: T,
): (...args: Parameters<T>) => ReturnType<T>;
monitor((p) => ({ p }), (p: number) => p);
monitor((p) => ({ p }), function (p: number) { return p; });
