Support symbols in property paths of set. [closes #3189]

This commit is contained in:
John-David Dalton
2017-06-06 07:06:47 -07:00
parent b107653a0f
commit bacaaaef8a

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@@ -13,10 +13,13 @@ const reIsUint = /^(?:0|[1-9]\d*)$/
* @returns {boolean} Returns `true` if `value` is a valid index, else `false`. * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
*/ */
function isIndex(value, length) { function isIndex(value, length) {
const type = typeof value
length = length == null ? MAX_SAFE_INTEGER : length length = length == null ? MAX_SAFE_INTEGER : length
return !!length && return !!length &&
(typeof value == 'number' || reIsUint.test(value)) && (type == 'number' ||
(value > -1 && value % 1 == 0 && value < length) (type != 'symbol' && reIsUint.test(value))) &&
(value > -1 && value % 1 == 0 && value < length)
} }
export default isIndex export default isIndex