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;
Eif (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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