You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
1.4 KiB
54 lines
1.4 KiB
2 years ago
|
declare namespace pLocate {
|
||
|
|
interface Options {
|
||
|
|
/**
|
||
|
|
Number of concurrently pending promises returned by `tester`. Minimum: `1`.
|
||
|
|
|
||
|
|
@default Infinity
|
||
|
|
*/
|
||
|
|
readonly concurrency?: number;
|
||
|
|
|
||
|
|
/**
|
||
|
|
Preserve `input` order when searching.
|
||
|
|
|
||
|
|
Disable this to improve performance if you don't care about the order.
|
||
|
|
|
||
|
|
@default true
|
||
|
|
*/
|
||
|
|
readonly preserveOrder?: boolean;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Get the first fulfilled promise that satisfies the provided testing function.
|
||
|
|
|
||
|
|
@param input - An iterable of promises/values to test.
|
||
|
|
@param tester - This function will receive resolved values from `input` and is expected to return a `Promise<boolean>` or `boolean`.
|
||
|
|
@returns A `Promise` that is fulfilled when `tester` resolves to `true` or the iterable is done, or rejects if any of the promises reject. The fulfilled value is the current iterable value or `undefined` if `tester` never resolved to `true`.
|
||
|
|
|
||
|
|
@example
|
||
|
|
```
|
||
|
|
import pathExists = require('path-exists');
|
||
|
|
import pLocate = require('p-locate');
|
||
|
|
|
||
|
|
const files = [
|
||
|
|
'unicorn.png',
|
||
|
|
'rainbow.png', // Only this one actually exists on disk
|
||
|
|
'pony.png'
|
||
|
|
];
|
||
|
|
|
||
|
|
(async () => {
|
||
|
|
const foundPath = await pLocate(files, file => pathExists(file));
|
||
|
|
|
||
|
|
console.log(foundPath);
|
||
|
|
//=> 'rainbow'
|
||
|
|
})();
|
||
|
|
```
|
||
|
|
*/
|
||
|
|
declare function pLocate<ValueType>(
|
||
|
|
input: Iterable<PromiseLike<ValueType> | ValueType>,
|
||
|
|
tester: (element: ValueType) => PromiseLike<boolean> | boolean,
|
||
|
|
options?: pLocate.Options
|
||
|
|
): Promise<ValueType | undefined>;
|
||
|
|
|
||
|
|
export = pLocate;
|