31 lines
1.0 KiB
JavaScript
31 lines
1.0 KiB
JavaScript
'use strict';
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var $TypeError = require('es-errors/type');
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var IsTypedArrayOutOfBounds = require('./IsTypedArrayOutOfBounds');
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var IsViewOutOfBounds = require('./IsViewOutOfBounds');
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var MakeDataViewWithBufferWitnessRecord = require('./MakeDataViewWithBufferWitnessRecord');
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var MakeTypedArrayWithBufferWitnessRecord = require('./MakeTypedArrayWithBufferWitnessRecord');
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var isDataView = require('is-data-view');
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var isTypedArray = require('is-typed-array');
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// https://262.ecma-international.org/15.0/#sec-isarraybufferviewoutofbounds
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module.exports = function IsArrayBufferViewOutOfBounds(O) {
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var isDV = isDataView(O);
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if (!isTypedArray(O) && !isDV) {
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throw new $TypeError('Assertion failed: `O` must be a TypedArray or DataView');
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}
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if (isDV) { // step 1
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var viewRecord = MakeDataViewWithBufferWitnessRecord(O, 'SEQ-CST'); // step 1.a
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return IsViewOutOfBounds(viewRecord); // step 1.b
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}
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var taRecord = MakeTypedArrayWithBufferWitnessRecord(O, 'SEQ-CST'); // step 2
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return IsTypedArrayOutOfBounds(taRecord); // step 3
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};
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