node.js - Constant Array in JavaScript

Question

How can I keep an array of constants in JavaScript?

And likewise, when comparing, it gives me the correct result.

Example,

const vector = [1, 2, 3, 4];

vector[2] = 7; // An element is not constant!

console.log(JSON.stringify(vector));
// [1,2,7,4] ... Was edited

// OR
const mirror = [1, 2, 7, 4];

console.log(`are equals? ${vector == mirror}`);
// false !

Answer 1

With Object.freeze you can prevent values from being added or changed on the object:

'use strict';
const vector = Object.freeze([1, 2, 3, 4]);

vector[2] = 7; // An element is not constant!