29 lines
1007 B
JavaScript
29 lines
1007 B
JavaScript
'use strict';
|
|
|
|
var $TypeError = require('es-errors/type');
|
|
|
|
var $byteLength = require('array-buffer-byte-length');
|
|
var availableTypedArrays = require('available-typed-arrays')();
|
|
var callBound = require('call-bind/callBound');
|
|
var isArrayBuffer = require('is-array-buffer');
|
|
var isSharedArrayBuffer = require('is-shared-array-buffer');
|
|
|
|
var $sabByteLength = callBound('SharedArrayBuffer.prototype.byteLength', true);
|
|
|
|
// https://262.ecma-international.org/8.0/#sec-isdetachedbuffer
|
|
|
|
module.exports = function IsDetachedBuffer(arrayBuffer) {
|
|
var isSAB = isSharedArrayBuffer(arrayBuffer);
|
|
if (!isArrayBuffer(arrayBuffer) && !isSAB) {
|
|
throw new $TypeError('Assertion failed: `arrayBuffer` must be an Object with an [[ArrayBufferData]] internal slot');
|
|
}
|
|
if ((isSAB ? $sabByteLength : $byteLength)(arrayBuffer) === 0) {
|
|
try {
|
|
new global[availableTypedArrays[0]](arrayBuffer); // eslint-disable-line no-new
|
|
} catch (error) {
|
|
return !!error && error.name === 'TypeError';
|
|
}
|
|
}
|
|
return false;
|
|
};
|