Whitepsace matching is too sensitive for functions

[danvk]

This type assertion fails:

async function fetchANumber(...args: Parameters<typeof fetch>): Promise<number> { ... }

fetchANumber
// ^? function fetchANumber(
//      input: RequestInfo | URL, init?: RequestInit | undefined
//    ): Promise<number>

with this error:

  Expected: function fetchANumber( input: RequestInfo | URL, init?: RequestInit | undefined ): Promise<number>
    Actual: function fetchANumber(input: RequestInfo | URL, init?: RequestInit | undefined): Promise<number>

Putting the whole expected type on one line with the spaces still fails the test in the same way.