We can sort a JavaScript map object by spreading the entries returned by the entries method into an array.
Then we call sort on that to sort the entries.
For instance, we can write:
const map = new Map();
map.set('2-1', "foo");
map.set('0-1', "bar");
map.set('3-1', "baz");
const mapAsc = new Map([...map.entries()].sort());
console.log(mapAsc)
to create a map object with several key-value pairs.
Then we call map.entries to return an iterator with arrays of key-value pairs in the map.
Next, we spread that into an array so we can call sort on it to sort it by the keys.
And then we convert it back to a map with the Map constructor.
Therefore, mapAsc is:
{"0-1" => "bar", "2-1" => "foo", "3-1" => "baz"}
Conclusion
We can sort a JavaScript map object by spreading the entries returned by the entries method into an array.
Then we call sort on that to sort the entries.
