47 lines
1.7 KiB
JavaScript
47 lines
1.7 KiB
JavaScript
'use strict';
|
|
|
|
var $SyntaxError = require('es-errors/syntax');
|
|
var $TypeError = require('es-errors/type');
|
|
|
|
var IsDetachedBuffer = require('./IsDetachedBuffer');
|
|
|
|
var isArrayBuffer = require('is-array-buffer');
|
|
var isSharedArrayBuffer = require('is-shared-array-buffer');
|
|
|
|
var MessageChannel;
|
|
try {
|
|
// eslint-disable-next-line global-require
|
|
MessageChannel = require('worker_threads').MessageChannel;
|
|
} catch (e) { /**/ }
|
|
|
|
// https://262.ecma-international.org/9.0/#sec-detacharraybuffer
|
|
|
|
/* globals postMessage */
|
|
|
|
module.exports = function DetachArrayBuffer(arrayBuffer) {
|
|
if (!isArrayBuffer(arrayBuffer) || isSharedArrayBuffer(arrayBuffer)) {
|
|
throw new $TypeError('Assertion failed: `arrayBuffer` must be an Object with an [[ArrayBufferData]] internal slot, and not a Shared Array Buffer');
|
|
}
|
|
|
|
// commented out since there's no way to set or access this key
|
|
// var key = arguments.length > 1 ? arguments[1] : void undefined;
|
|
|
|
// if (!SameValue(arrayBuffer[[ArrayBufferDetachKey]], key)) {
|
|
// throw new $TypeError('Assertion failed: `key` must be the value of the [[ArrayBufferDetachKey]] internal slot of `arrayBuffer`');
|
|
// }
|
|
|
|
if (!IsDetachedBuffer(arrayBuffer)) { // node v21.0.0+ throws when you structuredClone a detached buffer
|
|
if (typeof structuredClone === 'function') {
|
|
structuredClone(arrayBuffer, { transfer: [arrayBuffer] });
|
|
} else if (typeof postMessage === 'function') {
|
|
postMessage('', '/', [arrayBuffer]); // TODO: see if this might trigger listeners
|
|
} else if (MessageChannel) {
|
|
(new MessageChannel()).port1.postMessage(null, [arrayBuffer]);
|
|
} else {
|
|
throw new $SyntaxError('DetachArrayBuffer is not supported in this environment');
|
|
}
|
|
}
|
|
|
|
return null;
|
|
};
|