Cannot redeclare block-scoped variable 'diskType'

This error occurs when you declare a variable with the same name in the same block scope. Block scope refers to the area within a set of curly braces {}.

To solve this error, you need to make sure that you are not redeclaring the same variable in the same scope. You can do this by either renaming the variable or by using a different scope.

For example, if you have declared a variable "diskType" inside a function, you cannot declare it again within the same function. You can either rename it or move the second declaration to a different scope.

Here's an example of renaming the variable:

function myFunction() {
  let diskType = "SSD";
  // some code here
  let newDiskType = "HDD";
  // some more code here
}

Here's an example of using a different scope:

let diskType = "SSD"; // global scope

function myFunction() {
  // some code here
  let diskType = "HDD"; // local scope within the function
  // some more code here
}

By using different variable names or scopes, you can avoid the "Cannot redeclare block-scoped variable" error.