JavaScript Internals (521 Qs)•Part 5: ES6+ Modern Syntax, Classes, Modules & Destructuring (254 - 328)
Does the const variable make the value immutable
No, the const variable doesn't make the value immutable. But it disallows subsequent assignments(i.e, You can declare with assignment but can't assign another value later)
javascript
const userList = [];
userList.push("John"); // Can mutate even though it can't re-assign
console.log(userList); // ['John']