lix-website/themes/lix/assets/bootstrap/node_modules/es-abstract/2017/ValidateAtomicAccess.js
2024-04-26 22:49:34 -06:00

35 lines
900 B
JavaScript

'use strict';
var $RangeError = require('es-errors/range');
var $TypeError = require('es-errors/type');
var ToIndex = require('./ToIndex');
var isTypedArray = require('is-typed-array');
var typedArrayLength = require('typed-array-length');
// https://262.ecma-international.org/8.0/#sec-validateatomicaccess
module.exports = function ValidateAtomicAccess(typedArray, requestIndex) {
if (!isTypedArray(typedArray)) {
throw new $TypeError('Assertion failed: `typedArray` must be a TypedArray'); // step 1
}
var accessIndex = ToIndex(requestIndex); // step 2
var length = typedArrayLength(typedArray); // step 3
/*
// this assertion can never be reached
if (!(accessIndex >= 0)) {
throw new $TypeError('Assertion failed: accessIndex >= 0'); // step 4
}
*/
if (accessIndex >= length) {
throw new $RangeError('index out of range'); // step 5
}
return accessIndex; // step 6
};