Replace Command with Function

Goal

A command object whose execute() does everything in one shot collapses back to a plain function.

Before the refactoring

class ChargeCalculator {
  constructor(c, o) { this.c = c; this.o = o; }
  execute() { return this.c.base + this.o.tax; }
}
new ChargeCalculator(c, o).execute();

After the refactoring

function charge(c, o) { return c.base + o.tax; }
charge(c, o);

Savings

Fewer files, fewer constructors, less indirection — the caller sees one function instead of build-then-execute.

Note

If the command holds genuinely useful intermediate state, flattening to a function regrows the temps it eliminated — confirm there's no real reuse first.