react-barcode-scanner/lib/hooks/use-atom.js

A barcode scanner base on Barcode Detector

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.createAtom = createAtom;
exports.useAtom = useAtom;
var react_1 = require("react");
function createAtom() {
    var subscriptions = [];
    function set(newValue) {
        setTimeout(function () {
            subscriptions.forEach(function (c) { c(newValue); });
        });
    }
    return {
        set: set,
        subscriptions: subscriptions
    };
}
function useAtom(atom, initialState) {
    var _a = (0, react_1.useState)(initialState), state = _a[0], setState = _a[1];
    (0, react_1.useEffect)(function () {
        var index = atom.subscriptions.push(setState);
        return function () {
            atom.subscriptions.splice(index, 1);
        };
    }, [atom]);
    return [state, atom.set];
}