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- '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');
- // http://www.ecma-international.org/ecma-262/15.0/#sec-typedarraysetelement
- module.exports = function TypedArraySetElement(O, index, value) {
- var which = whichTypedArray(O);
- if (!which) {
- throw new $TypeError('Assertion failed: `O` must be a Typed Array');
- }
- if (typeof index !== 'number') {
- throw new $TypeError('Assertion failed: `index` must be a Number');
- }
- var contentType = which === 'BigInt64Array' || which === '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 byteIndexInBuffer = (index * elementSize) + offset; // step 3.c
- var elementType = TypedArrayElementType(O); // step 3.d
- SetValueInBuffer(typedArrayBuffer(O), byteIndexInBuffer, elementType, numValue, true, 'UNORDERED'); // step 3.e
- }
- };
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