lix-website/themes/lix/assets/bootstrap/node_modules/es-abstract/2022/IntegerIndexedElementSet.js
2024-04-26 22:49:34 -06:00

43 lines
1.5 KiB
JavaScript

'use strict';
var $TypeError = require('es-errors/type');
var IsValidIntegerIndex = require('./IsValidIntegerIndex');
var SetValueInBuffer = require('./SetValueInBuffer');
var ToBigInt = require('./ToBigInt');
var ToNumber = require('./ToNumber');
var TypedArrayElementSize = require('./TypedArrayElementSize');
var TypedArrayElementType = require('./TypedArrayElementType');
var typedArrayBuffer = require('typed-array-buffer');
var typedArrayByteOffset = require('typed-array-byte-offset');
var whichTypedArray = require('which-typed-array');
// https://262.ecma-international.org/13.0/#sec-integerindexedelementset
module.exports = function IntegerIndexedElementSet(O, index, value) {
var arrayTypeName = whichTypedArray(O);
if (!arrayTypeName) {
throw new $TypeError('Assertion failed: `O` must be a TypedArray');
}
if (typeof index !== 'number') {
throw new $TypeError('Assertion failed: `index` must be a Number');
}
var contentType = arrayTypeName === 'BigInt64Array' || arrayTypeName === 'BigUint64Array' ? 'BigInt' : 'Number';
var numValue = contentType === 'BigInt' ? ToBigInt(value) : ToNumber(value); // steps 1 - 2
if (IsValidIntegerIndex(O, index)) { // step 3
var offset = typedArrayByteOffset(O); // step 3.a
var elementSize = TypedArrayElementSize(O); // step 3.b
var indexedPosition = (index * elementSize) + offset; // step 3.c
var elementType = TypedArrayElementType(O); // step 3.d
SetValueInBuffer(typedArrayBuffer(O), indexedPosition, elementType, numValue, true, 'Unordered'); // step 3.e
}
};