clean-code-javascript

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Destructuring also clones the specified primitive values of the argument object passed into the function. This can help prevent side effects. Note: objects and arrays that are destructured from the argument object are NOT cloned.

Primitive arguments of functions are already cloned. This is not es6 object deconstruction specific behavior.

let a = 5;
const increment = (num)=> ++num;
console.log(increment(a));
console.log(a);

If the function accepts an object as a parameter, just the reference will be cloned.