I have a map that is made of an array of arrays. I need to sort this map based on the second value per array (index 1). Since this map is essentially an array, I'm wondering why values.sort() yields an error stating that it is an undefined function. How can I sort such without changing the values map (and also preferably not introducing another variable)?

var values = new Map([
  [3, 123],
  [1, 562],  
  [4, 345]
])
console.log(values.get(1)) // returns 562 - okay

values.sort((x,y) => {
    return x[1] - y[1]
})