1 | 'use strict';
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2 |
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3 | var $TypeError = require('es-errors/type');
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4 |
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5 | var IsValidIntegerIndex = require('./IsValidIntegerIndex');
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6 | var SetValueInBuffer = require('./SetValueInBuffer');
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7 | var ToBigInt = require('./ToBigInt');
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8 | var ToNumber = require('./ToNumber');
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9 | var TypedArrayElementSize = require('./TypedArrayElementSize');
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10 | var TypedArrayElementType = require('./TypedArrayElementType');
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11 |
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12 | var typedArrayBuffer = require('typed-array-buffer');
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13 | var typedArrayByteOffset = require('typed-array-byte-offset');
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14 | var whichTypedArray = require('which-typed-array');
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15 |
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16 | // https://262.ecma-international.org/13.0/#sec-integerindexedelementset
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17 |
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18 | module.exports = function IntegerIndexedElementSet(O, index, value) {
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19 | var arrayTypeName = whichTypedArray(O);
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20 | if (!arrayTypeName) {
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21 | throw new $TypeError('Assertion failed: `O` must be a TypedArray');
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22 | }
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23 |
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24 | if (typeof index !== 'number') {
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25 | throw new $TypeError('Assertion failed: `index` must be a Number');
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26 | }
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27 |
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28 | var contentType = arrayTypeName === 'BigInt64Array' || arrayTypeName === 'BigUint64Array' ? 'BigInt' : 'Number';
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29 | var numValue = contentType === 'BigInt' ? ToBigInt(value) : ToNumber(value); // steps 1 - 2
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30 |
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31 | if (IsValidIntegerIndex(O, index)) { // step 3
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32 | var offset = typedArrayByteOffset(O); // step 3.a
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33 |
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34 | var elementSize = TypedArrayElementSize(O); // step 3.b
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35 |
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36 | var indexedPosition = (index * elementSize) + offset; // step 3.c
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37 |
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38 | var elementType = TypedArrayElementType(O); // step 3.d
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39 |
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40 | SetValueInBuffer(typedArrayBuffer(O), indexedPosition, elementType, numValue, true, 'Unordered'); // step 3.e
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41 | }
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42 | };
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