You can take a different approach and change Symbol.iterator from Map.prototype[@@iterator]() for a custom sorted result.

var map = new Map();

map.set("orange", 10);
map.set("apple", 5);
map.set("banana", 20);
map.set("cherry", 13);

map[Symbol.iterator] = function* () {
    yield* [...this.entries()].sort((a, b) => a[1] - b[1]);
}

for (let [key, value] of map) {     // get data sorted
    console.log(key + ' ' + value);
}

console.log([...map]);              // sorted order
console.log([...map.entries()]);