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• esnext.set.find.js

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package.modules.esnext.set.find.js Maven / Gradle / Ivy

'use strict';
var $ = require('../internals/export');
var bind = require('../internals/function-bind-context');
var aSet = require('../internals/a-set');
var iterate = require('../internals/set-iterate');

// `Set.prototype.find` method
// https://github.com/tc39/proposal-collection-methods
$({ target: 'Set', proto: true, real: true, forced: true }, {
  find: function find(callbackfn /* , thisArg */) {
    var set = aSet(this);
    var boundFunction = bind(callbackfn, arguments.length > 1 ? arguments[1] : undefined);
    var result = iterate(set, function (value) {
      if (boundFunction(value, value, set)) return { value: value };
    }, true);
    return result && result.value;
  }
});