21 lines
637 B
Plaintext
21 lines
637 B
Plaintext
/**
|
|
Returns the type that is wrapped inside a `Promise` type.
|
|
If the type is not a `Promise`, the type itself is returned.
|
|
|
|
@example
|
|
```
|
|
import {PromiseValue} from 'type-fest';
|
|
|
|
type AsyncData = Promise<string>;
|
|
let asyncData: PromiseValue<AsyncData> = Promise.resolve('ABC');
|
|
|
|
type Data = PromiseValue<AsyncData>;
|
|
let data: Data = await asyncData;
|
|
|
|
// Here's an example that shows how this type reacts to non-Promise types.
|
|
type SyncData = PromiseValue<string>;
|
|
let syncData: SyncData = getSyncData();
|
|
```
|
|
*/
|
|
export type PromiseValue<PromiseType, Otherwise = PromiseType> = PromiseType extends Promise<infer Value> ? Value : Otherwise;
|