You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
20 lines
776 B
20 lines
776 B
4 weeks ago
|
'use strict';
|
||
|
|
var aSet = require('../internals/a-set');
|
||
|
|
var has = require('../internals/set-helpers').has;
|
||
|
|
var size = require('../internals/set-size');
|
||
|
|
var getSetRecord = require('../internals/get-set-record');
|
||
|
|
var iterateSimple = require('../internals/iterate-simple');
|
||
|
|
var iteratorClose = require('../internals/iterator-close');
|
||
|
|
|
||
|
|
// `Set.prototype.isSupersetOf` method
|
||
|
|
// https://tc39.github.io/proposal-set-methods/#Set.prototype.isSupersetOf
|
||
|
|
module.exports = function isSupersetOf(other) {
|
||
|
|
var O = aSet(this);
|
||
|
|
var otherRec = getSetRecord(other);
|
||
|
|
if (size(O) < otherRec.size) return false;
|
||
|
|
var iterator = otherRec.getIterator();
|
||
|
|
return iterateSimple(iterator, function (e) {
|
||
|
|
if (!has(O, e)) return iteratorClose(iterator, 'normal', false);
|
||
|
|
}) !== false;
|
||
|
|
};
|