axax/es5/fromEvent.js

A library of async iterator extensions for JavaScript including ```map```, ```reduce```, ```filter```, ```flatMap```, ```pipe``` and [more](https://github.com/jamiemccrindle/axax/blob/master/docs/API.md#functions).

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var subject_1 = require("./subject");
function fromEvent(source, type) {
    var subject = new subject_1.Subject();
    var callback = function (event) {
        subject.onNext(event);
    };
    source.addEventListener(type, callback);
    subject.finally(function () { return source.removeEventListener(type, callback); });
    return subject.iterator;
}
exports.fromEvent = fromEvent;