drills-2.3.3.js

function doTrafficLights() {
  var activeLight = getActiveLight();
  if (activeLight === 'red') {
    turnRed();
  } else if (activeLight === 'yellow') {
    turnYellow();
  } else if (activeLight === 'green') {
    turnGreen();
  }
}

function main() {
  try {
    doAllTheThings();
  } 
  catch (e) {
    console.error(e);
    reportError(e);
  }
}