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						 | 
						- var isArray = require('./isArray'),
 -     isSymbol = require('./isSymbol');
 - 
 - /** Used to match property names within property paths. */
 - var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
 -     reIsPlainProp = /^\w*$/;
 - 
 - /**
 -  * Checks if `value` is a property name and not a property path.
 -  *
 -  * @private
 -  * @param {*} value The value to check.
 -  * @param {Object} [object] The object to query keys on.
 -  * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
 -  */
 - function isKey(value, object) {
 -   if (isArray(value)) {
 -     return false;
 -   }
 -   var type = typeof value;
 -   if (type == 'number' || type == 'symbol' || type == 'boolean' ||
 -       value == null || isSymbol(value)) {
 -     return true;
 -   }
 -   return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
 -     (object != null && value in Object(object));
 - }
 - 
 - module.exports = isKey;
 
 
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