structured-clone-proper-transfer.js 829 B

123456789101112131415161718
  1. 'use strict';
  2. var global = require('../internals/global');
  3. var fails = require('../internals/fails');
  4. var V8 = require('../internals/engine-v8-version');
  5. var IS_BROWSER = require('../internals/engine-is-browser');
  6. var IS_DENO = require('../internals/engine-is-deno');
  7. var IS_NODE = require('../internals/engine-is-node');
  8. var structuredClone = global.structuredClone;
  9. module.exports = !!structuredClone && !fails(function () {
  10. // prevent V8 ArrayBufferDetaching protector cell invalidation and performance degradation
  11. // https://github.com/zloirock/core-js/issues/679
  12. if ((IS_DENO && V8 > 92) || (IS_NODE && V8 > 94) || (IS_BROWSER && V8 > 97)) return false;
  13. var buffer = new ArrayBuffer(8);
  14. var clone = structuredClone(buffer, { transfer: [buffer] });
  15. return buffer.byteLength !== 0 || clone.byteLength !== 8;
  16. });