| '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 |
| }; |