Function beforeAsync

beforeAsync<T extends (...args: any[]) => Promise<any>>(
n: number,
fn: T,
): (...args: Parameters<T>) => Promise<undefined | ReturnType<T>>
Returns an async function that only runs for the first n calls.
Type Parameters
- T extends (...args: any[]) => Promise<any>
Parameters
- n: number
  Number of times function can be called.
- fn: T
  Async function to execute.
Returns (...args: Parameters<T>) => Promise<undefined | ReturnType<T>>
Async function.
Example
```
const fn = beforeAsync(2, async () => 'ok');
await fn(); // 'ok'
await fn(); // 'ok'
await fn(); // undefined
```
Since
1.2.0
- Defined in function/beforeAsync.ts:17