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

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