/*!
 * jQuery JavaScript Library v3.3.1
 * https://jquery.com/
 *
 * Includes Sizzle.js
 * https://sizzlejs.com/
 *
 * Copyright JS Foundation and other contributors
 * Released under the MIT license
 * https://jquery.org/license
 *
 * Date: 2018-01-20T17:24Z
 */
(function(global, factory) {
    'use strict';

    if (typeof module === 'object' && typeof module.exports === 'object') {
        // For CommonJS and CommonJS-like environments where a proper `window`
        // is present, execute the factory and get jQuery.
        // For environments that do not have a `window` with a `document`
        // (such as Node.js), expose a factory as module.exports.
        // This accentuates the need for the creation of a real `window`.
        // e.g. var jQuery = require("jquery")(window);
        // See ticket #14549 for more info.
        module.exports = global.document
            ? factory(global, true)
            : function(w) {
                  if (!w.document) {
                      throw new Error(
                          'jQuery requires a window with a document'
                      );
                  }
                  return factory(w);
              };
    } else {
        factory(global);
    }

    // Pass this if window is not defined yet
})(typeof window !== 'undefined' ? window : this, function(window, noGlobal) {
    // Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1
    // throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode
    // arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common
    // enough that all such attempts are guarded in a try block.
    'use strict';

    var arr = [];

    var document = window.document;

    // ...
    // ...此处省略一些函数定义...
    // ...

    var version = '3.3.1',
        // Define a local copy of jQuery
        jQuery = function(selector, context) {
            // The jQuery object is actually just the init constructor 'enhanced'
            // Need init if jQuery is called (just allow error to be thrown if not included)
            return new jQuery.fn.init(selector, context);
        },
        // Support: Android <=4.0 only
        // Make sure we trim BOM and NBSP
        rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g;

    // ...
    // ...此处一万行 jQuery 功能代码...
    // ...

    // Register as a named AMD module, since jQuery can be concatenated with other
    // files that may use define, but not via a proper concatenation script that
    // understands anonymous AMD modules. A named AMD is safest and most robust
    // way to register. Lowercase jquery is used because AMD module names are
    // derived from file names, and jQuery is normally delivered in a lowercase
    // file name. Do this after creating the global so that if an AMD module wants
    // to call noConflict to hide this version of jQuery, it will work.

    // Note that for maximum portability, libraries that are not jQuery should
    // declare themselves as anonymous modules, and avoid setting a global if an
    // AMD loader is present. jQuery is a special case. For more information, see
    // https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon

    if (typeof define === 'function' && define.amd) {
        define('jquery', [], function() {
            return jQuery;
        });
    }

    var // Map over jQuery in case of overwrite
        _jQuery = window.jQuery,
        // Map over the $ in case of overwrite
        _$ = window.$;

    jQuery.noConflict = function(deep) {
        if (window.$ === jQuery) {
            window.$ = _$;
        }

        if (deep && window.jQuery === jQuery) {
            window.jQuery = _jQuery;
        }

        return jQuery;
    };

    // Expose jQuery and $ identifiers, even in AMD
    // (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
    // and CommonJS for browser emulators (#13566)
    if (!noGlobal) {
        window.jQuery = window.$ = jQuery;
    }

    return jQuery;
});

class SomeClass {
  windowScrollSubject = new BehaviorSubject<object>(null);
  get windowScroll$() {
    return this.windowScrollSubject.asObservable();
  }

  @HostListener('window:scroll', [])
  onWindowScroll() {
    this.windowScrollSubject.next(null);
  }
}