define( [

"../core",
"../var/document",
"../var/isFunction"

], function( jQuery, document, isFunction ) {

“use strict”;

var readyCallbacks = [],

whenReady = function( fn ) {
        readyCallbacks.push( fn );
},
executeReady = function( fn ) {

        // Prevent errors from freezing future callback execution (gh-1823)
        // Not backwards-compatible as this does not execute sync
        window.setTimeout( function() {
                fn.call( document, jQuery );
        } );
};

jQuery.fn.ready = function( fn ) {

whenReady( fn );
return this;

};

jQuery.extend( {

// Is the DOM ready to be used? Set to true once it occurs.
isReady: false,

// A counter to track how many items to wait for before
// the ready event fires. See #6781
readyWait: 1,

ready: function( wait ) {

        // Abort if there are pending holds or we're already ready
        if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
                return;
        }

        // Remember that the DOM is ready
        jQuery.isReady = true;

        // If a normal DOM Ready event fired, decrement, and wait if need be
        if ( wait !== true && --jQuery.readyWait > 0 ) {
                return;
        }

        whenReady = function( fn ) {
                readyCallbacks.push( fn );

                while ( readyCallbacks.length ) {
                        fn = readyCallbacks.shift();
                        if ( isFunction( fn ) ) {
                                executeReady( fn );
                        }
                }
        };

        whenReady();
}

} );

// Make jQuery.ready Promise consumable (gh-1778) jQuery.ready.then = jQuery.fn.ready;

/**

* The ready event handler and self cleanup method
*/

function completed() {

document.removeEventListener( "DOMContentLoaded", completed );
window.removeEventListener( "load", completed );
jQuery.ready();

}

// Catch cases where $(document).ready() is called // after the browser event has already occurred. // Support: IE9-10 only // Older IE sometimes signals “interactive” too soon if ( document.readyState === “complete” ||

( document.readyState !== "loading" && !document.documentElement.doScroll ) ) {

// Handle it asynchronously to allow scripts the opportunity to delay ready
window.setTimeout( jQuery.ready );

} else {

// Use the handy event callback
document.addEventListener( "DOMContentLoaded", completed );

// A fallback to window.onload, that will always work
window.addEventListener( "load", completed );

}

} );