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27 lines
937 B
Plaintext
27 lines
937 B
Plaintext
'use strict';
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var $TypeError = require('es-errors/type');
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var ArrayBufferByteLength = require('./ArrayBufferByteLength');
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var IsDetachedBuffer = require('./IsDetachedBuffer');
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var isTypedArray = require('is-typed-array');
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var typedArrayBuffer = require('typed-array-buffer');
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// https://262.ecma-international.org/15.0/#sec-maketypedarraywithbufferwitnessrecord
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module.exports = function MakeTypedArrayWithBufferWitnessRecord(obj, order) {
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if (!isTypedArray(obj)) {
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throw new $TypeError('Assertion failed: `obj` must be a Typed Array');
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}
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if (order !== 'SEQ-CST' && order !== 'UNORDERED') {
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throw new $TypeError('Assertion failed: `order` must be ~SEQ-CST~ or ~UNORDERED~');
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}
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var buffer = typedArrayBuffer(obj); // step 1
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var byteLength = IsDetachedBuffer(buffer) ? 'DETACHED' : ArrayBufferByteLength(buffer, order); // steps 2 - 3
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return { '[[Object]]': obj, '[[CachedBufferByteLength]]': byteLength }; // step 4
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};
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