is-iterable.js 443 B

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  1. var classof = require('../internals/classof');
  2. var hasOwn = require('../internals/has-own-property');
  3. var wellKnownSymbol = require('../internals/well-known-symbol');
  4. var Iterators = require('../internals/iterators');
  5. var ITERATOR = wellKnownSymbol('iterator');
  6. var $Object = Object;
  7. module.exports = function (it) {
  8. var O = $Object(it);
  9. return O[ITERATOR] !== undefined
  10. || '@@iterator' in O
  11. || hasOwn(Iterators, classof(O));
  12. };