Nikolay Vitkov | d76576c | 2024-12-02 14:10:15 | [diff] [blame] | 1 | 'use strict'; |
| 2 | |
| 3 | var $SyntaxError = require('es-errors/syntax'); |
| 4 | var $TypeError = require('es-errors/type'); |
| 5 | |
| 6 | var isArrayBuffer = require('is-array-buffer'); |
| 7 | |
| 8 | var IsDetachedBuffer = require('./IsDetachedBuffer'); |
| 9 | |
| 10 | var MessageChannel; |
| 11 | try { |
| 12 | // eslint-disable-next-line global-require |
| 13 | MessageChannel = require('worker_threads').MessageChannel; // node 11.7+ |
| 14 | } catch (e) { /**/ } |
| 15 | |
| 16 | // https://262.ecma-international.org/6.0/#sec-detacharraybuffer |
| 17 | |
| 18 | /* globals postMessage */ |
| 19 | |
| 20 | module.exports = function DetachArrayBuffer(arrayBuffer) { |
| 21 | if (!isArrayBuffer(arrayBuffer)) { |
| 22 | throw new $TypeError('Assertion failed: `arrayBuffer` must be an Object with an [[ArrayBufferData]] internal slot'); |
| 23 | } |
| 24 | |
| 25 | if (!IsDetachedBuffer(arrayBuffer)) { // node v21.0.0+ throws when you structuredClone a detached buffer |
| 26 | if (typeof structuredClone === 'function') { |
| 27 | structuredClone(arrayBuffer, { transfer: [arrayBuffer] }); |
| 28 | } else if (typeof postMessage === 'function') { |
| 29 | postMessage('', '/', [arrayBuffer]); // TODO: see if this might trigger listeners |
| 30 | } else if (MessageChannel) { |
| 31 | (new MessageChannel()).port1.postMessage(null, [arrayBuffer]); |
| 32 | } else { |
| 33 | throw new $SyntaxError('DetachArrayBuffer is not supported in this environment'); |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | return null; |
| 38 | }; |