Bug Report

🔎 Search Terms

exactOptionalPropertyTypes, Required

🕗 Version & Regression Information

• This is the behavior in every version I tried, and I reviewed the FAQ for entries about exactOptionalPropertyTypes (didn't find any)

⏯ Playground Link

Playground link with relevant code

💻 Code

declare const someVal: Required<{
    fn?(key: string): string | null;
}>;
someVal.fn(""); // Cannot invoke an object which is possibly 'undefined'.(2722)

🙁 Actual behavior

TS shows the an error for the function call: Cannot invoke an object which is possibly 'undefined'.(2722)

🙂 Expected behavior

I expect no error because the type definition already makes clear that all functions in that type are required, none optional.