You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
50 lines
1.7 KiB
JavaScript
50 lines
1.7 KiB
JavaScript
12 months ago
|
var baseTimes = require('./_baseTimes'),
|
||
|
|
isArguments = require('./isArguments'),
|
||
|
|
isArray = require('./isArray'),
|
||
|
|
isBuffer = require('./isBuffer'),
|
||
|
|
isIndex = require('./_isIndex'),
|
||
|
|
isTypedArray = require('./isTypedArray');
|
||
|
|
|
||
|
|
/** Used for built-in method references. */
|
||
|
|
var objectProto = Object.prototype;
|
||
|
|
|
||
|
|
/** Used to check objects for own properties. */
|
||
|
|
var hasOwnProperty = objectProto.hasOwnProperty;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates an array of the enumerable property names of the array-like `value`.
|
||
|
|
*
|
||
|
|
* @private
|
||
|
|
* @param {*} value The value to query.
|
||
|
|
* @param {boolean} inherited Specify returning inherited property names.
|
||
|
|
* @returns {Array} Returns the array of property names.
|
||
|
|
*/
|
||
|
|
function arrayLikeKeys(value, inherited) {
|
||
|
|
var isArr = isArray(value),
|
||
|
|
isArg = !isArr && isArguments(value),
|
||
|
|
isBuff = !isArr && !isArg && isBuffer(value),
|
||
|
|
isType = !isArr && !isArg && !isBuff && isTypedArray(value),
|
||
|
|
skipIndexes = isArr || isArg || isBuff || isType,
|
||
|
|
result = skipIndexes ? baseTimes(value.length, String) : [],
|
||
|
|
length = result.length;
|
||
|
|
|
||
|
|
for (var key in value) {
|
||
|
|
if ((inherited || hasOwnProperty.call(value, key)) &&
|
||
|
|
!(skipIndexes && (
|
||
|
|
// Safari 9 has enumerable `arguments.length` in strict mode.
|
||
|
|
key == 'length' ||
|
||
|
|
// Node.js 0.10 has enumerable non-index properties on buffers.
|
||
|
|
(isBuff && (key == 'offset' || key == 'parent')) ||
|
||
|
|
// PhantomJS 2 has enumerable non-index properties on typed arrays.
|
||
|
|
(isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||
|
||
|
|
// Skip index properties.
|
||
|
|
isIndex(key, length)
|
||
|
|
))) {
|
||
|
|
result.push(key);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = arrayLikeKeys;
|