minifier: Simplify variable reassignment by using input parameter directly

[camc314]

The current implementation of foo unnecessarily reassigns the input parameter to a new variable (node = inputNode) solely to change its type. This can be simplified by using the parameter directly and removing the redundant variable declaration.

Current Code

// input
export function foo(inputNode) {
  // re-assign to change type
  let node = inputNode;

  do {
    node = node.parent
  } while (node !== null)

  return node
}

Proposed Optimization

The reassignment is unnecessary. We can rewrite the function using the parameter node directly and simplify the loop syntax:

// expected output
export function foo(node) {
  do
    node = node.parent
  while (node !== null)
  
  return node
}

This allows users to change the type of node without encountering the cost of declaring an additional variable.