pvdz.ee - 12.15 debugger statement

DebuggerStatement :
debugger ;

Implementation specific debugging tool. If implemented, should cause a breakpoint when evaluated. Otherwise should be ignored with no noticable side effects. Since there are no arguments to this statement, there's little that could go wrong.

Code: (Meta Ecma)

function evaluate(debugger ;) {
  if (global.debugger) { // "if implementation supports it"
    // do implementation specific stuff
    // return implementation specific Completion
  }
  return Completion('normal', undefined, undefined);
}