I have function x
and I have function y
. How can I make function y
have all the same parameter and return types as function x
? Essentially I'd like to make them identical, except for their inner workings (everything in between {
and }
).
I know I can use Parameters<typeof x>
and ReturnType<typeof x>
but was wondering if there was a single utility that does everything in one hit.
typeof x
will give you the full type:
const x = (a: string, b: number): boolean => { return true }
const y: typeof x = (a: string, b: number): boolean => { return false }
// leaving the individual types out, but they're still string, number, boolean
const implicitY: typeof x = (a, b) => { return false }
// This misuse of `typeof x` shows typescript errors
const badY: typeof x = (a: number, b: string): boolean => { return 'hi' }
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.