IsDetachedBuffer.js 958 B

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  1. 'use strict';
  2. var GetIntrinsic = require('get-intrinsic');
  3. var $TypeError = GetIntrinsic('%TypeError%');
  4. var callBound = require('call-bind/callBound');
  5. var $byteLength = callBound('%ArrayBuffer.prototype.byteLength%', true)
  6. || function byteLength(ab) { return ab.byteLength; }; // in node < 0.11, byteLength is an own nonconfigurable property
  7. var isArrayBuffer = require('is-array-buffer');
  8. var availableTypedArrays = require('available-typed-arrays')();
  9. // https://262.ecma-international.org/6.0/#sec-isdetachedbuffer
  10. module.exports = function IsDetachedBuffer(arrayBuffer) {
  11. if (!isArrayBuffer(arrayBuffer)) {
  12. throw new $TypeError('Assertion failed: `arrayBuffer` must be an Object with an [[ArrayBufferData]] internal slot');
  13. }
  14. if ($byteLength(arrayBuffer) === 0) {
  15. try {
  16. new global[availableTypedArrays[0]](arrayBuffer); // eslint-disable-line no-new
  17. } catch (error) {
  18. return error.name === 'TypeError';
  19. }
  20. }
  21. return false;
  22. };