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  1. 'use strict';
  2. var $ = require('../internals/export');
  3. var symmetricDifference = require('../internals/set-symmetric-difference');
  4. var setMethodAcceptSetLike = require('../internals/set-method-accept-set-like');
  5. // `Set.prototype.symmetricDifference` method
  6. // https://github.com/tc39/proposal-set-methods
  7. $({ target: 'Set', proto: true, real: true, forced: !setMethodAcceptSetLike('symmetricDifference') }, {
  8. symmetricDifference: symmetricDifference
  9. });