minter-js-sdk
Version:
JS SDK for Minter Blockchain
26 lines (20 loc) • 810 B
JavaScript
;
var _typeof = require('@babel/runtime/helpers/typeof');
/** Used as references for various `Number` constants. */
var MAX_SAFE_INTEGER = 9007199254740991;
/** Used to detect unsigned integer values. */
var reIsUint = /^(?:0|[1-9]\d*)$/;
/**
* Checks if `value` is a valid array-like index.
*
* @private
* @param {*} value The value to check.
* @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
* @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
*/
function isIndex(value, length) {
var type = _typeof(value);
length = length == null ? MAX_SAFE_INTEGER : length;
return !!length && (type == 'number' || type != 'symbol' && reIsUint.test(value)) && value > -1 && value % 1 == 0 && value < length;
}
module.exports = isIndex;