dictionary - First item from a Map on JavaScript ES2015

Question

I have a Map like this:

const m = new Map();
m.set('key1', {})
.
m.set('keyN' {})

the Mapcan have 1 or many items. Can I get the first item by index, without m.get('key1') and without a iterator loop?

like: m.get()[0]

Answer 1

Use the Map.prototype.entries function, like this

const m = new Map();
m.set('key1', {})
m.set('keyN', {})

console.log(m.entries().next().value); // [ 'key1', {} ]