IsArrayBufferViewOutOfBounds.jsā¢1.04 kB
'use strict';
var $TypeError = require('es-errors/type');
var IsTypedArrayOutOfBounds = require('./IsTypedArrayOutOfBounds');
var IsViewOutOfBounds = require('./IsViewOutOfBounds');
var MakeDataViewWithBufferWitnessRecord = require('./MakeDataViewWithBufferWitnessRecord');
var MakeTypedArrayWithBufferWitnessRecord = require('./MakeTypedArrayWithBufferWitnessRecord');
var isDataView = require('is-data-view');
var isTypedArray = require('is-typed-array');
// https://262.ecma-international.org/15.0/#sec-isarraybufferviewoutofbounds
module.exports = function IsArrayBufferViewOutOfBounds(O) {
var isDV = isDataView(O);
if (!isTypedArray(O) && !isDV) {
throw new $TypeError('Assertion failed: `O` must be a TypedArray or DataView');
}
if (isDV) { // step 1
var viewRecord = MakeDataViewWithBufferWitnessRecord(O, 'SEQ-CST'); // step 1.a
return IsViewOutOfBounds(viewRecord); // step 1.b
}
var taRecord = MakeTypedArrayWithBufferWitnessRecord(O, 'SEQ-CST'); // step 2
return IsTypedArrayOutOfBounds(taRecord); // step 3
};