36 lines
1.0 KiB
JavaScript
36 lines
1.0 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.promiseMap = void 0;
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const noop = () => { };
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/**
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* Creates promises of a list of values. Resolves all promises and
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* returns an array of resolved values.
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*/
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const promiseMap = (values, onValue, onError = noop) => new Promise((resolve) => {
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const length = values.length;
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if (!length) {
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return resolve([]);
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}
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const results = [];
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let resolvedCount = 0;
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for (let i = 0; i < length; i++) {
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const value = values[i];
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const promise = onValue(value);
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promise.then((result) => {
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results[i] = result;
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resolvedCount++;
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if (resolvedCount === length) {
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resolve(results);
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}
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}, (error) => {
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results[i] = null;
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onError(error, value, i);
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resolvedCount++;
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if (resolvedCount === length) {
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resolve(results);
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}
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});
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}
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});
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exports.promiseMap = promiseMap;
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