softkave-js-utils/build/function/loopAndCollateAsync.js

JavaScript & Typescript utility functions, types, and classes

import assert from 'assert';
import { kLoopAsyncSettlementType } from './types.js';
/**
 * See {@link loopAndCollate}
 * Returns a list containing results of `fn` invocations
 */
export async function loopAndCollateAsync(fn, max, settlement, ...otherParams) {
    assert(max >= 0);
    if (settlement === kLoopAsyncSettlementType.oneByOne) {
        const result = Array(max);
        for (let i = 0; i < max; i++) {
            result[i] = await fn(i, ...otherParams);
        }
        return result;
    }
    else {
        const promises = Array(max);
        for (let i = 0; i < max; i++) {
            promises[i] = fn(i, ...otherParams);
        }
        if (settlement === kLoopAsyncSettlementType.all) {
            return (await Promise.all(promises));
        }
        else if (settlement === kLoopAsyncSettlementType.allSettled) {
            return (await Promise.allSettled(promises));
        }
    }
    throw new Error(`Unknown promise settlement type ${settlement}`);
}
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