DetachArrayBuffer.js 1.2 KB

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  1. 'use strict';
  2. var GetIntrinsic = require('get-intrinsic');
  3. var $SyntaxError = GetIntrinsic('%SyntaxError%');
  4. var $TypeError = GetIntrinsic('%TypeError%');
  5. var isArrayBuffer = require('is-array-buffer');
  6. var isSharedArrayBuffer = require('is-shared-array-buffer');
  7. var MessageChannel;
  8. try {
  9. // eslint-disable-next-line global-require
  10. MessageChannel = require('worker_threads').MessageChannel; // node 11.7+
  11. } catch (e) { /**/ }
  12. // https://262.ecma-international.org/8.0/#sec-detacharraybuffer
  13. /* globals postMessage */
  14. module.exports = function DetachArrayBuffer(arrayBuffer) {
  15. if (!isArrayBuffer(arrayBuffer) || isSharedArrayBuffer(arrayBuffer)) {
  16. throw new $TypeError('Assertion failed: `arrayBuffer` must be an Object with an [[ArrayBufferData]] internal slot, and not a Shared Array Buffer');
  17. }
  18. if (typeof structuredClone === 'function') {
  19. structuredClone(arrayBuffer, { transfer: [arrayBuffer] });
  20. } else if (typeof postMessage === 'function') {
  21. postMessage('', '/', [arrayBuffer]); // TODO: see if this might trigger listeners
  22. } else if (MessageChannel) {
  23. (new MessageChannel()).port1.postMessage(null, [arrayBuffer]);
  24. } else {
  25. throw new $SyntaxError('DetachArrayBuffer is not supported in this environment');
  26. }
  27. return null;
  28. };