repeat.js 2.4 KB
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.repeat = void 0;
var empty_1 = require("../observable/empty");
var lift_1 = require("../util/lift");
var OperatorSubscriber_1 = require("./OperatorSubscriber");
var innerFrom_1 = require("../observable/innerFrom");
var timer_1 = require("../observable/timer");
function repeat(countOrConfig) {
    var _a;
    var count = Infinity;
    var delay;
    if (countOrConfig != null) {
        if (typeof countOrConfig === 'object') {
            (_a = countOrConfig.count, count = _a === void 0 ? Infinity : _a, delay = countOrConfig.delay);
        }
        else {
            count = countOrConfig;
        }
    }
    return count <= 0
        ? function () { return empty_1.EMPTY; }
        : lift_1.operate(function (source, subscriber) {
            var soFar = 0;
            var sourceSub;
            var resubscribe = function () {
                sourceSub === null || sourceSub === void 0 ? void 0 : sourceSub.unsubscribe();
                sourceSub = null;
                if (delay != null) {
                    var notifier = typeof delay === 'number' ? timer_1.timer(delay) : innerFrom_1.innerFrom(delay(soFar));
                    var notifierSubscriber_1 = OperatorSubscriber_1.createOperatorSubscriber(subscriber, function () {
                        notifierSubscriber_1.unsubscribe();
                        subscribeToSource();
                    });
                    notifier.subscribe(notifierSubscriber_1);
                }
                else {
                    subscribeToSource();
                }
            };
            var subscribeToSource = function () {
                var syncUnsub = false;
                sourceSub = source.subscribe(OperatorSubscriber_1.createOperatorSubscriber(subscriber, undefined, function () {
                    if (++soFar < count) {
                        if (sourceSub) {
                            resubscribe();
                        }
                        else {
                            syncUnsub = true;
                        }
                    }
                    else {
                        subscriber.complete();
                    }
                }));
                if (syncUnsub) {
                    resubscribe();
                }
            };
            subscribeToSource();
        });
}
exports.repeat = repeat;
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