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define( function() {
	"use strict";

	return function isFunction( obj ) {

        // Support: Chrome <=57, Firefox <=52
        // In some browsers, typeof returns "function" for HTML <object> elements
        // (i.e., `typeof document.createElement( "object" ) === "function"`).
        // We don't want to classify *any* DOM node as a function.
        return typeof obj === "function" && typeof obj.nodeType !== "number";
    };

} );