es.uint8-array.set-from-hex.js 1.3 KB

123456789101112131415161718192021222324252627282930313233
  1. 'use strict';
  2. var $ = require('../internals/export');
  3. var globalThis = require('../internals/global-this');
  4. var aString = require('../internals/a-string');
  5. var anUint8Array = require('../internals/an-uint8-array');
  6. var notDetached = require('../internals/array-buffer-not-detached');
  7. var $fromHex = require('../internals/uint8-from-hex');
  8. // Should not throw an error on length-tracking views over ResizableArrayBuffer
  9. // https://issues.chromium.org/issues/454630441
  10. function throwsOnLengthTrackingView() {
  11. try {
  12. // eslint-disable-next-line es/no-resizable-and-growable-arraybuffers -- required for testing
  13. var rab = new ArrayBuffer(16, { maxByteLength: 1024 });
  14. // eslint-disable-next-line es/no-uint8array-prototype-setfromhex, es/no-typed-arrays -- required for testing
  15. new Uint8Array(rab).setFromHex('cafed00d');
  16. } catch (error) {
  17. return true;
  18. }
  19. }
  20. // `Uint8Array.prototype.setFromHex` method
  21. // https://github.com/tc39/proposal-arraybuffer-base64
  22. if (globalThis.Uint8Array) $({ target: 'Uint8Array', proto: true, forced: throwsOnLengthTrackingView() }, {
  23. setFromHex: function setFromHex(string) {
  24. anUint8Array(this);
  25. aString(string);
  26. notDetached(this.buffer);
  27. var read = $fromHex(string, this).read;
  28. return { read: read, written: read / 2 };
  29. }
  30. });