Changed Webpack versions to avoid build error

[stargazing-dino]

Following the directions in the readme I got this error trying to npm start:

I think it's related to this issue. I just changed some library versions.

[stargazing-dino]

Actually, I'm not sure if this just created another problem. I'm now getting this error:

It might've been there before the change in Webpack versions though. I have no way of telling.

We could possibly change these lines to something like a switch statement:

function getAgentClass() {
  const agentName = getAgentName();
  return import(`./agents/${agentName}Agent`).then(
    ({ default: Agent }) => Agent
  );
}

-->

import PolicyAgent from "./agents/PolicyGradientAgent";
import KeyboardAgent from "./agents/KeyBoardAgent";
import RandomHillClimbingAgent from "./agents/RandomHillClimbingAgent";

function getAgentClass() {
  const agentName = getAgentName();
  let agent;
  switch (agentName) {
    case "Random":
      agent = new RandomHillClimbingAgent();
      break;
    case "Keyboard":
      agent = new KeyboardAgent();
      break;
    case "Policy":
      agent = new PolicyAgent();
      break;
    default:
      console.error("Unknown agent");
  }

  return agent
}

Otherwise, I think we'll need to mess with the Webpack settings.

[stargazing-dino]

These changes have it working for me now on my end.