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- 'use strict';
- var $ = require('../internals/export');
- var uncurryThis = require('../internals/function-uncurry-this');
- var aSet = require('../internals/a-set');
- var iterate = require('../internals/set-iterate');
- var toString = require('../internals/to-string');
-
- var arrayJoin = uncurryThis([].join);
- var push = uncurryThis([].push);
-
- // `Set.prototype.join` method
- // https://github.com/tc39/proposal-collection-methods
- $({ target: 'Set', proto: true, real: true, forced: true }, {
- join: function join(separator) {
- var set = aSet(this);
- var sep = separator === undefined ? ',' : toString(separator);
- var array = [];
- iterate(set, function (value) {
- push(array, value);
- });
- return arrayJoin(array, sep);
- }
- });
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