/**
* lodash 3.0.1 (Custom Build)
* Build: `lodash modern modularize exports="npm" -o ./`
* Copyright 2012-2015 The Dojo Foundation
* Based on Underscore.js 1.7.0
* Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
* Available under MIT license
*/
var isPlainObject = require('lodash.isplainobject');
/**
* Checks if `value` is object-like.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is object-like, else `false`.
*/
function isObjectLike(value) {
return (value && typeof value == 'object') || false;
}
/** Used for native method references. */
var objectProto = Object.prototype;
/** Used to detect DOM support. */
var document = (document = global.window) && document.document;
/**
* Used to resolve the `toStringTag` of values.
* See the [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
* for more details.
*/
var objToString = objectProto.toString;
/** Native method references. */
var propertyIsEnumerable = objectProto.propertyIsEnumerable;
/**
* An object environment feature flags.
*
* @static
* @memberOf _
* @type Object
*/
var support = {};
(function(x) {
/**
* Detect if the DOM is supported.
*
* @memberOf _.support
* @type boolean
*/
try {
support.dom = document.createDocumentFragment().nodeType === 11;
} catch(e) {
support.dom = false;
}
/**
* Detect if `arguments` object indexes are non-enumerable.
*
* In Firefox < 4, IE < 9, PhantomJS, and Safari < 5.1 `arguments` object
* indexes are non-enumerable. Chrome < 25 and Node.js < 0.11.0 treat
* `arguments` object indexes as non-enumerable and fail `hasOwnProperty`
* checks for indexes that exceed their function's formal parameters with
* associated values of `0`.
*
* @memberOf _.support
* @type boolean
*/
try {
support.nonEnumArgs = !propertyIsEnumerable.call(arguments, 1);
} catch(e) {
support.nonEnumArgs = true;
}
}(0, 0));
/**
* Checks if `value` is a DOM element.
*
* @static
* @memberOf _
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
* @example
*
* _.isElement(document.body);
* // => true
*
* _.isElement('');
* // => false
*/
function isElement(value) {
return (value && value.nodeType === 1 && isObjectLike(value) &&
objToString.call(value).indexOf('Element') > -1) || false;
}
// Fallback for environments without DOM support.
if (!support.dom) {
isElement = function(value) {
return (value && value.nodeType === 1 && isObjectLike(value) && !isPlainObject(value)) || false;
};
}
module.exports = isElement;