var fromArray_1 = require('../observable/fromArray');
var combineLatest_support_1 = require('./combineLatest-support');
var isArray_1 = require('../util/isArray');
/**
 * Combines the values from this observable with values from observables passed as arguments. This is done by subscribing
 * to each observable, in order, and collecting an array of each of the most recent values any time any of the observables
 * emits, then either taking that array and passing it as arguments to an option `project` function and emitting the return
 * value of that, or just emitting the array of recent values directly if there is no `project` function.
 * @param {...Observable} observables the observables to combine the source with
 * @param {function} [project] an optional function to project the values from the combined recent values into a new value for emission.
 * @returns {Observable} an observable of other projected values from the most recent values from each observable, or an array of each of
 * the most recent values from each observable.
 */
function combineLatest() {
    var observables = [];
    for (var _i = 0; _i < arguments.length; _i++) {
        observables[_i - 0] = arguments[_i];
    }
    var project = null;
    if (typeof observables[observables.length - 1] === 'function') {
        project = observables.pop();
    }
    // if the first and only other argument besides the resultSelector is an array
    // assume it's been called with `combineLatest([obs1, obs2, obs3], project)`
    if (observables.length === 1 && isArray_1.isArray(observables[0])) {
        observables = observables[0];
    }
    observables.unshift(this);
    return new fromArray_1.ArrayObservable(observables).lift(new combineLatest_support_1.CombineLatestOperator(project));
}
exports.combineLatest = combineLatest;
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