Change Function Declaration

Goal

Function names match what they actually do; parameter lists carry only what the function needs, in the order callers expect.

Before the refactoring

function circum(radius) {
  return 2 * Math.PI * radius;
}

After the refactoring

function circumference(radius) {
  return 2 * Math.PI * radius;
}

Savings

Call sites read fluently; mismatches between expectation and behavior surface immediately at the boundary.

Note

Mass renames or signature shifts ripple to every caller; refactor in tooling-supported steps and update tests with each batch.