Map instance
Confirms if given object is a native map
const isMap = require("type/map/is");
isMap(new Map()); // true
isMap(new Set()); // false
isMap({}); // false
If given argument is a map, it is returned back. Otherwise TypeError
is thrown.
const ensureMap = require("type/map/ensure");
const map = new Map();
ensureMap(map); // map
eensureMap({}); // Thrown TypeError: [object Object] is not a map