/TypeScript/Typescript get the promise return type

Typescript get the promise return type

type AsyncReturnType<T extends (...args: any) => any> =
	T extends (...args: any) => Promise<infer U> ? U :
	T extends (...args: any) => infer U ? U :
	any

Typescript get type from promise

function promiseOne() {
  return Promise.resolve(1)
}
    
const promisedOne = promiseOne()
    
// note PromiseLike instead of Promise, this lets it work on any thenable
type ThenArg<T> = T extends PromiseLike<infer U> ? U : T
    
type PromiseOneThenArg = ThenArg<typeof promisedOne> // => number
// or
type PromiseOneThenArg2 = ThenArg<ReturnType<typeof promiseOne>> // => number

Source: stackoverflow.com

Similar codes

8 votes294 views3 answers
L'exécution de scripts est désactivée sur ce système.
TypeScript
0 vote282 views1 answer
Pandas value_counts sort descending
TypeScript
1 vote327 views1 answer
Get all documents in collection firestore flutter
TypeScript
0 vote310 views1 answer
Firebase angular assets not showing
TypeScript
0 vote294 views1 answer
Angular 9 remove text after white space
TypeScript
0 vote282 views1 answer
Pointer vers dépots distants git hub
TypeScript
1 vote268 views1 answer
Laravel update if exists or create
TypeScript
2 votes305 views2 answers
Vs code ahk folding
TypeScript
0 vote318 views1 answer
How to load plugin scripts in roblox studio command
TypeScript
0 vote301 views1 answer
The following TestContainer was not found
TypeScript