source: imaps-frontend/node_modules/es-abstract/2022/IntegerIndexedElementGet.js@ d565449

'use strict';

var $TypeError = require('es-errors/type');

var GetValueFromBuffer = require('./GetValueFromBuffer');
var IsValidIntegerIndex = require('./IsValidIntegerIndex');
var TypedArrayElementSize = require('./TypedArrayElementSize');
var TypedArrayElementType = require('./TypedArrayElementType');

var isTypedArray = require('is-typed-array');
var typedArrayBuffer = require('typed-array-buffer');
var typedArrayByteOffset = require('typed-array-byte-offset');

// https://262.ecma-international.org/13.0/#sec-integerindexedelementget

module.exports = function IntegerIndexedElementGet(O, index) {
        if (!isTypedArray(O)) {
                throw new $TypeError('Assertion failed: `O` must be a TypedArray');
        }

        if (typeof index !== 'number') {
                throw new $TypeError('Assertion failed: `index` must be a Number');
        }

        if (!IsValidIntegerIndex(O, index)) {
                return void undefined; // step 1
        }

        var offset = typedArrayByteOffset(O); // step 2

        var elementSize = TypedArrayElementSize(O); // step 3

        var indexedPosition = (index * elementSize) + offset; // step 4

        var elementType = TypedArrayElementType(O); // step 5

        return GetValueFromBuffer(typedArrayBuffer(O), indexedPosition, elementType, true, 'Unordered'); // step 11
};