lix-website/themes/lix/assets/bootstrap/node_modules/es-abstract/2019/DetachArrayBuffer.js

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2024-04-27 03:39:10 +00:00
'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;
};