data-view-with-buffer-witness-record.js 535 B

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  1. 'use strict';
  2. var hasOwn = require('hasown');
  3. var isDataView = require('is-data-view');
  4. var isInteger = require('../isInteger');
  5. module.exports = function isDataViewWithBufferWitnessRecord(value) {
  6. return !!value
  7. && typeof value === 'object'
  8. && hasOwn(value, '[[Object]]')
  9. && hasOwn(value, '[[CachedBufferByteLength]]')
  10. && (
  11. (isInteger(value['[[CachedBufferByteLength]]']) && value['[[CachedBufferByteLength]]'] >= 0)
  12. || value['[[CachedBufferByteLength]]'] === 'DETACHED'
  13. )
  14. && isDataView(value['[[Object]]']);
  15. };