https://eloquentjavascript.net/07_robot.html#i_VbBsQJ1lp6

Eloquent JavaScript 0702 Robot Efficiency.js

// Your code here
function yourRobot({place, parcels}, route) {
  if (route.length == 0) {
    const routes = parcels.map(parcel => {
      let route, pickingUp = false;
      if (parcel.place != place) {
        route = findRoute(roadGraph, place, parcel.place);
        pickingUp = true;
      } else {
        route = findRoute(roadGraph, place, parcel.address);
      }
      return { route, pickingUp };
    });
    
	const getRouteRating = ({ route, pickingUp }) => (pickingUp ? 0.5 : 0) - route.length;
    route = routes.reduce((a, b) => getRouteRating(a) > getRouteRating(b) ? a : b).route;
  }
  return {direction: route[0], memory: route.slice(1)};
}

runRobotAnimation(VillageState.random(), yourRobot, []);

countSteps = (state, robot, memory) => {
  for (let turn = 0;; turn++) {
    if (state.parcels.length == 0) {
      return turn;
    }
    let action = robot(state, memory);
    state = state.move(action.direction);
    memory = action.memory;
  }
}

function compareRobots(robot1, memory1, robot2, memory2) {
  // Your code here
  let steps1 = 0, steps2 = 0;
  for (let i = 0; i < 100; i++) {
	const task = VillageState.random();
    steps1 += countSteps(task, robot1, memory1);
    steps2 += countSteps(task, robot2, memory2);
  }
  
  console.log(`Robot1 usually takes ${steps1 / 100} steps`);
  console.log(`Robot2 usually takes ${steps2 / 100} steps`);
}

compareRobots(yourRobot, [], goalOrientedRobot, []);