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65 lines
1.6 KiB
TypeScript
65 lines
1.6 KiB
TypeScript
declare const stop: unique symbol;
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declare namespace pEachSeries {
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type StopSymbol = typeof stop;
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}
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declare const pEachSeries: {
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/**
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Iterate over promises serially.
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@param input - Iterated over serially in the `iterator` function.
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@param iterator - Return value is ignored unless it's `Promise`, then it's awaited before continuing with the next iteration.
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@returns A `Promise` that fulfills when all promises in `input` and ones returned from `iterator` are fulfilled, or rejects if any of the promises reject. The fulfillment value is the original `input`.
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@example
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```
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import pEachSeries = require('p-each-series');
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const keywords = [
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getTopKeyword(), //=> Promise
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'rainbow',
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'pony'
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];
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const iterator = async element => saveToDiskPromise(element);
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(async () => {
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console.log(await pEachSeries(keywords, iterator));
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//=> ['unicorn', 'rainbow', 'pony']
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})();
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```
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*/
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<ValueType>(
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input: Iterable<PromiseLike<ValueType> | ValueType>,
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iterator: (element: ValueType, index: number) => pEachSeries.StopSymbol | unknown
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): Promise<ValueType[]>;
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/**
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Stop iterating through items by returning `pEachSeries.stop` from the iterator function.
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@example
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```
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const pEachSeries = require('p-each-series');
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// Logs `a` and `b`.
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const result = await pEachSeries(['a', 'b', 'c'], value => {
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console.log(value);
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if (value === 'b') {
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return pEachSeries.stop;
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}
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});
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console.log(result);
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//=> ['a', 'b', 'c']
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```
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*/
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readonly stop: pEachSeries.StopSymbol;
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// TODO: Remove this for the next major release
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default: typeof pEachSeries;
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};
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export = pEachSeries;
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