Get the first fulfilled promise that satisfies the provided testing function
npm install p-locate> Get the first fulfilled promise that satisfies the provided testing function
Think of it like an async version of Array#find.
``sh`
npm install p-locate
Here we find the first file that exists on disk, in array order.
`js
import {pathExists} from 'path-exists';
import pLocate from 'p-locate';
const files = [
'unicorn.png',
'rainbow.png', // Only this one actually exists on disk
'pony.png'
];
const foundPath = await pLocate(files, file => pathExists(file));
console.log(foundPath);
//=> 'rainbow.png'
`
The above is just an example. Use locate-path if you need this.
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.
#### input
Type: Iterable
An iterable or async iterable of promises/values to test.
When an AsyncIterable is given, it is iterated serially and the concurrency and preserveOrder options are not applicable.
#### tester(element)
Type: Function
This function will receive resolved values from input and is expected to return a Promise or boolean.
#### options
Type: object
##### concurrency
Type: number\Infinity
Default: \1
Minimum:
The number of concurrently pending promises returned by tester.
##### preserveOrder
Type: boolean\true
Default:
Preserve input` order when searching.
Disable this to improve performance if you don't care about the order.
- p-map - Map over promises concurrently
- p-filter - Filter promises concurrently
- p-any - Wait for any promise to be fulfilled
- More…