24 lines
715 B
TypeScript
Executable file
24 lines
715 B
TypeScript
Executable file
import {PromiseValue} from './promise-value';
|
|
|
|
type AsyncFunction = (...args: any[]) => Promise<unknown>;
|
|
|
|
/**
|
|
Unwrap the return type of a function that returns a `Promise`.
|
|
|
|
There has been [discussion](https://github.com/microsoft/TypeScript/pull/35998) about implementing this type in TypeScript.
|
|
|
|
@example
|
|
```ts
|
|
import {AsyncReturnType} from 'type-fest';
|
|
import {asyncFunction} from 'api';
|
|
|
|
// This type resolves to the unwrapped return type of `asyncFunction`.
|
|
type Value = AsyncReturnType<typeof asyncFunction>;
|
|
|
|
async function doSomething(value: Value) {}
|
|
|
|
asyncFunction().then(value => doSomething(value));
|
|
```
|
|
*/
|
|
export type AsyncReturnType<Target extends AsyncFunction> = PromiseValue<ReturnType<Target>>;
|