TypeScript require generic parameter to be provided

Question

I have the following function:

async function get(url: string): Promise {
    return getUrl(url);
}

However, i

Answer 1

You could use multiple type parameters:

function contractType(value: unknown): U {
    return value as U
}

const example1: string = contractType(17) // error
const example2: string = contractType("value") // error
const example3: string = contractType("value") // ok

https://github.com/Microsoft/TypeScript/issues/14829#issuecomment-288902999