@beenotung/tslib/parallel-run.js

utils library in Typescript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.parallel_run = void 0;
const tslib_1 = require("tslib");
// to batch process async operation in parallel, e.g. downloading files
function parallel_run(xs, f, n_partition) {
    return tslib_1.__awaiter(this, void 0, void 0, function* () {
        function run_partition(offset) {
            return tslib_1.__awaiter(this, void 0, void 0, function* () {
                for (let i = offset; i < xs.length; i += n_partition) {
                    yield f(xs[i]);
                }
            });
        }
        const ps = [];
        for (let i = 0; i < n_partition; i++) {
            ps.push(run_partition(i));
        }
        yield Promise.all(ps);
    });
}
exports.parallel_run = parallel_run;
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