index.js 674 B

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  1. 'use strict';
  2. var callBound = require('call-bound');
  3. var getDay = callBound('Date.prototype.getDay');
  4. /** @type {import('.')} */
  5. var tryDateObject = function tryDateGetDayCall(value) {
  6. try {
  7. getDay(value);
  8. return true;
  9. } catch (e) {
  10. return false;
  11. }
  12. };
  13. /** @type {(value: unknown) => string} */
  14. var toStr = callBound('Object.prototype.toString');
  15. var dateClass = '[object Date]';
  16. var hasToStringTag = require('has-tostringtag/shams')();
  17. /** @type {import('.')} */
  18. module.exports = function isDateObject(value) {
  19. if (typeof value !== 'object' || value === null) {
  20. return false;
  21. }
  22. return hasToStringTag ? tryDateObject(value) : toStr(value) === dateClass;
  23. };