# Set _Set_ instance ## `set/is` Confirms if given object is a native set\_ ```javascript const isSet = require("type/set/is"); isSet(new Set()); // true isSet(new Map()); // false isSet({}); // false ``` ## `Set/ensure` If given argument is a _set_, it is returned back. Otherwise `TypeError` is thrown. ```javascript const ensureSet = require("type/set/ensure"); const set = new Set(); ensureSet(set); // set eensureSet({}); // Thrown TypeError: [object Object] is not a set ```