.config/coc/extensions/node_modules/coc-prettier/node_modules/core-js/modules/esnext.set.symmetric-difference.js

   1 'use strict';
   2 var IS_PURE = require('../internals/is-pure');
   3 var $ = require('../internals/export');
   4 var getBuiltIn = require('../internals/get-built-in');
   5 var call = require('../internals/function-call');
   6 var aCallable = require('../internals/a-callable');
   7 var anObject = require('../internals/an-object');
   8 var speciesConstructor = require('../internals/species-constructor');
   9 var iterate = require('../internals/iterate');
  10
  11 // `Set.prototype.symmetricDifference` method
  12 // https://github.com/tc39/proposal-set-methods
  13 $({ target: 'Set', proto: true, real: true, forced: IS_PURE }, {
  14   symmetricDifference: function symmetricDifference(iterable) {
  15     var set = anObject(this);
  16     var newSet = new (speciesConstructor(set, getBuiltIn('Set')))(set);
  17     var remover = aCallable(newSet['delete']);
  18     var adder = aCallable(newSet.add);
  19     iterate(iterable, function (value) {
  20       call(remover, newSet, value) || call(adder, newSet, value);
  21     });
  22     return newSet;
  23   }
  24 });