main.js

const fs = require("fs");

class Command {
  constructor(name, params) {
    this.name = name;
    this.params = params;
  }
}

function main() {
  const filename = "input.txt";
  const commands = getCommandsFromFileName(filename);

  commands.forEach(command => {
    switch (command.name) {
      case "create_hotel": {
        const [floor, roomPerFloor] = command.params;

        return;
      }
      default:
        return;
    }
  });
}

function getCommandsFromFileName(fileName) {
  const file = fs.readFileSync(fileName, "utf-8");

  return file
    .split("\n")
    .map(line => line.split(" "))
    .map(
      ([commandName, ...params]) =>
        new Command(
          commandName,
          params.map(param => {
            const parsedParam = parseInt(param, 10);

            return Number.isNaN(parsedParam) ? param : parsedParam;
          })
        )
    );
}

main();