1 | 'use strict';
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2 | var $ = require('../internals/export');
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3 | var bind = require('../internals/function-bind-context');
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4 | var aSet = require('../internals/a-set');
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5 | var SetHelpers = require('../internals/set-helpers');
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6 | var iterate = require('../internals/set-iterate');
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7 |
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8 | var Set = SetHelpers.Set;
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9 | var add = SetHelpers.add;
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10 |
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11 |
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12 |
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13 | $({ target: 'Set', proto: true, real: true, forced: true }, {
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14 | map: function map(callbackfn /* , thisArg */) {
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15 | var set = aSet(this);
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16 | var boundFunction = bind(callbackfn, arguments.length > 1 ? arguments[1] : undefined);
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17 | var newSet = new Set();
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18 | iterate(set, function (value) {
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19 | add(newSet, boundFunction(value, value, set));
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20 | });
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21 | return newSet;
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22 | }
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23 | });
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