Is it possible to sort a ES6 map object?

Question

Is it possible to sort the entries of a es6 map object?

var map = new Map();
map.set(\'2-1\', foo);
map.set(\'0-1\', bar);

results in:

Answer 1

The idea is to extract the keys of your map into an array. Sort this array. Then iterate over this sorted array, get its value pair from the unsorted map and put them into a new map. The new map will be in sorted order. The code below is it's implementation:

var unsortedMap = new Map();
unsortedMap.set('2-1', 'foo');
unsortedMap.set('0-1', 'bar');

// Initialize your keys array
var keys = [];
// Initialize your sorted maps object
var sortedMap = new Map();

// Put keys in Array
unsortedMap.forEach(function callback(value, key, map) {
    keys.push(key);
});

// Sort keys array and go through them to put in and put them in sorted map
keys.sort().map(function(key) {
    sortedMap.set(key, unsortedMap.get(key));
});

// View your sorted map
console.log(sortedMap);