Sha256: 66f12234f8f9041a2d6ff9342b1627c9447707bbc74ce135fef705f6f7b419cd
Contents?: true
Size: 935 Bytes
Versions: 81
Compression:
Stored size: 935 Bytes
Contents
'use strict';
var GetIntrinsic = require('get-intrinsic');
var $TypeError = GetIntrinsic('%TypeError%');
var IsDetachedBuffer = require('./IsDetachedBuffer');
var IsIntegralNumber = require('./IsIntegralNumber');
var isNegativeZero = require('../helpers/isNegativeZero');
var typedArrayBuffer = require('typed-array-buffer');
// https://262.ecma-international.org/12.0/#sec-isvalidintegerindex
module.exports = function IsValidIntegerIndex(O, index) {
// Assert: O is an Integer-Indexed exotic object.
var buffer = typedArrayBuffer(O); // step 1
if (typeof index !== 'number') {
throw new $TypeError('Assertion failed: Type(index) is not Number');
}
if (IsDetachedBuffer(buffer)) { return false; } // step 2
if (!IsIntegralNumber(index)) { return false; } // step 3
if (isNegativeZero(index)) { return false; } // step 4
if (index < 0 || index >= O.length) { return false; } // step 5
return true; // step 6
};
Version data entries
81 entries across 27 versions & 2 rubygems