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| 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; | |
| } | |
| } | |
| declare const pLocate: { | |
| /** | |
| 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' | |
| })(); | |
| ``` | |
| */ | |
| <ValueType>( | |
| input: Iterable<PromiseLike<ValueType> | ValueType>, | |
| tester: (element: ValueType) => PromiseLike<boolean> | boolean, | |
| options?: pLocate.Options | |
| ): Promise<ValueType | undefined>; | |
| // TODO: Remove this for the next major release, refactor the whole definition to: | |
| // declare function pLocate<ValueType>( | |
| // input: Iterable<PromiseLike<ValueType> | ValueType>, | |
| // tester: (element: ValueType) => PromiseLike<boolean> | boolean, | |
| // options?: pLocate.Options | |
| // ): Promise<ValueType | undefined>; | |
| // export = pLocate; | |
| default: typeof pLocate; | |
| }; | |
| export = pLocate; | |