Acme.BookStore.HttpApi.Host/node_modules/jquery/src/event.js

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define( [
	"./core",
	"./var/document",
	"./var/documentElement",
	"./var/isFunction",
	"./var/rnothtmlwhite",
	"./var/rcheckableType",
	"./var/slice",
	"./data/var/acceptData",
	"./data/var/dataPriv",
	"./core/nodeName",

	"./core/init",
	"./selector"
], function( jQuery, document, documentElement, isFunction, rnothtmlwhite,
	rcheckableType, slice, acceptData, dataPriv, nodeName ) {

"use strict";

var rtypenamespace = /^([^.]*)(?:\.(.+)|)/;

function returnTrue() {
	return true;
}

function returnFalse() {
	return false;
}

// Support: IE <=9 - 11+
// focus() and blur() are asynchronous, except when they are no-op.
// So expect focus to be synchronous when the element is already active,
// and blur to be synchronous when the element is not already active.
// (focus and blur are always synchronous in other supported browsers,
// this just defines when we can count on it).
function expectSync( elem, type ) {
	return ( elem === safeActiveElement() ) === ( type === "focus" );
}

// Support: IE <=9 only
// Accessing document.activeElement can throw unexpectedly
// https://bugs.jquery.com/ticket/13393
function safeActiveElement() {
	try {
		return document.activeElement;
	} catch ( err ) { }
}

function on( elem, types, selector, data, fn, one ) {
	var origFn, type;

	// Types can be a map of types/handlers
	if ( typeof types === "object" ) {

		// ( types-Object, selector, data )
		if ( typeof selector !== "string" ) {

			// ( types-Object, data )
			data = data || selector;
			selector = undefined;