@fbltd/async/dist/bin/dependency/react/use-race-stream/race-stream.controller.js

Miscellaneous async utils

import { isObjectsContentEqual } from "../utils.js";
import { raceStream } from "../../vanilla/index.js";
export class RaceStreamController {
    _value;
    isFirstWas = false;
    rerenderTrigger;
    deps;
    iterator;
    constructor(streams) {
        this.deps = streams;
        this.init();
    }
    get value() {
        return this._value;
    }
    async init() {
        this.iterator = raceStream(this.deps);
        this._value = Object.entries(this.deps)
            .reduce((acc, [key, dep]) => {
            acc[key] = dep.value;
            return acc;
        }, {});
        for await (let value of this.iterator) {
            this.rerenderTrigger?.(prev => !prev);
            if (!this.isFirstWas && !isObjectsContentEqual(this._value, value)) {
                this._value = value;
            }
            this.isFirstWas = true;
        }
    }
    dispose = () => {
        this.iterator.dispose();
    };
}