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/*!
* is-data-descriptor <https://github.com/jonschlinkert/is-data-descriptor>
*
* Copyright (c) 2015-2017, Jon Schlinkert.
* Released under the MIT License.
*/
'use strict';
var typeOf = require('kind-of');
module.exports = function isDataDescriptor(obj, prop) {
// data descriptor properties
var data = {
configurable: 'boolean',
enumerable: 'boolean',
writable: 'boolean'
};
if (typeOf(obj) !== 'object') {
return false;
}
if (typeof prop === 'string') {
var val = Object.getOwnPropertyDescriptor(obj, prop);
return typeof val !== 'undefined';
}
if (!('value' in obj) && !('writable' in obj)) {
return false;
}
for (var key in obj) {
if (key === 'value') continue;
if (!data.hasOwnProperty(key)) {
continue;
}
if (typeOf(obj[key]) === data[key]) {
continue;
}
if (typeof obj[key] !== 'undefined') {
return false;
}
}
return true;
};