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69 lines
1.8 KiB
JavaScript
69 lines
1.8 KiB
JavaScript
/**
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* lodash 3.0.2 (Custom Build) <https://lodash.com/>
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* Build: `lodash modern modularize exports="npm" -o ./`
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* Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
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* Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
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* Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
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* Available under MIT license <https://lodash.com/license>
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*/
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/** Used for native method references. */
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var objectProto = Object.prototype;
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/** Used to detect DOM support. */
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var document = (document = global.window) && document.document;
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/** Native method references. */
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var propertyIsEnumerable = objectProto.propertyIsEnumerable;
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/**
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* An object environment feature flags.
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*
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* @static
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* @memberOf _
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* @type Object
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*/
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var support = {};
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(function(x) {
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var Ctor = function() { this.x = x; },
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args = arguments,
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object = { '0': x, 'length': x },
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props = [];
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Ctor.prototype = { 'valueOf': x, 'y': x };
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for (var key in new Ctor) { props.push(key); }
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/**
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* Detect if the DOM is supported.
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*
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* @memberOf _.support
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* @type boolean
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*/
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try {
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support.dom = document.createDocumentFragment().nodeType === 11;
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} catch(e) {
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support.dom = false;
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}
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/**
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* Detect if `arguments` object indexes are non-enumerable.
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*
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* In Firefox < 4, IE < 9, PhantomJS, and Safari < 5.1 `arguments` object
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* indexes are non-enumerable. Chrome < 25 and Node.js < 0.11.0 treat
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* `arguments` object indexes as non-enumerable and fail `hasOwnProperty`
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* checks for indexes that exceed the number of function parameters and
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* whose associated argument values are `0`.
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*
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* @memberOf _.support
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* @type boolean
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*/
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try {
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support.nonEnumArgs = !propertyIsEnumerable.call(args, 1);
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} catch(e) {
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support.nonEnumArgs = true;
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}
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}(1, 0));
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module.exports = support;
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