rx-queue
Version:
Easy to Use ReactiveX Queue that Supports Delay/DelayExecutor/Throttle/Debounce/Concurrency Features Powered by RxJS/IxJS
38 lines • 1.38 kB
JavaScript
;
/**
* If you know how iterators work and how they are consumed you would't need any extra library,
* since it can become very easy to build your own concurrency yourself.
* — @Endless
*
* Inspired by: @link https://stackoverflow.com/a/51020535/1123955
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.concurrencyExecuter = void 0;
/**
* Huan's stackoverflow answer (code example) for `merge`:
* @link https://stackoverflow.com/a/69985103/1123955
*/
const index_js_1 = require("ix/asynciterable/index.js");
const executeTask = (task) => async function* (iterator) {
for (const one of iterator) {
const result = await task(one);
yield result;
}
};
/**
* Execute task with the concurrency on an iterator
* The order will not be guaranteed. (mostly will be different)
*/
const concurrencyExecuter = (concurrency = 1) => (task) => async function* (iterator) {
if (Array.isArray(iterator)) {
iterator = iterator.values();
}
const executer = executeTask(task);
const resultIteratorList = new Array(concurrency)
.fill(iterator)
.map(executer);
yield* (0, index_js_1.merge)(...resultIteratorList);
};
exports.concurrencyExecuter = concurrencyExecuter;
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