How do I declare constant arrays in TypeScript?

How do I declare constant arrays in TypeScript?

In TypeScript, you can declare a constant array using the const keyword. For example: const myArray: number[] = [1, 2, 3]; This means that the reference to myArray cannot be changed, but you can still modify its contents.

Can I change the elements of a constant array?

Yes, you can change the elements of a constant array. For instance, you can do myArray[0] = 10; to change the first element to 10.

What happens if I try to reassign the array?

If you try to reassign the array, like myArray = [4, 5, 6];, TypeScript will throw an error because myArray is declared as a constant.

Are there any best practices for using constant arrays?

It's best to use constant arrays when you want to ensure that the reference remains unchanged. This helps prevent accidental reassignments and makes your code more predictable.