ducha-qianduan/node_modules/rxjs/internal/observable/merge.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var Observable_1 = require("../Observable");
var isScheduler_1 = require("../util/isScheduler");
var mergeAll_1 = require("../operators/mergeAll");
var fromArray_1 = require("./fromArray");
function merge() {
    var observables = [];
    for (var _i = 0; _i < arguments.length; _i++) {
        observables[_i] = arguments[_i];
    }
    var concurrent = Number.POSITIVE_INFINITY;
    var scheduler = null;
    var last = observables[observables.length - 1];
    if (isScheduler_1.isScheduler(last)) {
        scheduler = observables.pop();
        if (observables.length > 1 && typeof observables[observables.length - 1] === 'number') {
            concurrent = observables.pop();
        }
    }
    else if (typeof last === 'number') {
        concurrent = observables.pop();
    }
    if (scheduler === null && observables.length === 1 && observables[0] instanceof Observable_1.Observable) {
        return observables[0];
    }
    return mergeAll_1.mergeAll(concurrent)(fromArray_1.fromArray(observables, scheduler));
}
exports.merge = merge;
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