使用 Commander.js 动态创建带有选项的子命令

Question

我正在尝试创建一个可以动态创建带有选项的子命令的 CLI。我有一个名为“仪表板”的主程序。我想创建具有选项的“登录”和“注销”子命令。我似乎无法运行子命令选项。它退出代码，说选项不存在。理想情况下使用 switch case，如果我想添加更多命令，那将是我唯一需要更改的地方。我怎样才能动态创建它？

我试过在主命令上使用 .hook() 来添加选项，但它对我没有用。我试过创建一个单独的可执行文件，但没有用。这是我目前所拥有的

// main command
const program = new Command();

  program
    .name("dashboard")
    .description("CLI")
    .option("-d, --debug", "outputs extra debugging", false)
    .hook("preSubcommand", (commandObj) => {
      if (commandObj.args[1] === "login") {
        program.addOption(new Option("-e, --email")); // this doesn't work
      }
    });

  program.parse(process.argv);

//subcommands
 const commander = program.command("dashboard");
  const subcommand = program.args[1];

  try {
    let func: any;
    let description: string;
    let option: any;

    switch (subcommand) {
      case "login":
        description = "Logging you in!";
        func = (await import("./commands/login.js")).default;
        option = "-e, --email";
        break;
      case "logout":
        description = "Logging you out";
        func = (await import("./commands/logout.js")).default;
        break;
      default:
        description = "";
        func = null;
        break;
    }


    commander
      .command(subcommand)
      .on("command:login", () => console.log("Does this work?")) // No, it doesn't
      .hook("preSubcommand", () => {
        if (subcommand === "login") {
          console.log("What about this?"); // Still no
        }
      });
      .description(description)
      .option(option) // Tried adding the option from the switch case here, doesn't work
      .action(async (arg, option) => {
        console.log("🚀 ~ file: index.ts:128 ~ .action ~ option:", option);
        console.log("test");
      await func(client);
    });
    console.log("🚀 ~ file: index.ts:131 ~ main ~ commander:", commander.opts());
  } catch (err: unknown) {
    console.log(err);
  }
  program.parse();

当我运行命令

dashboard login -e

时，我得到一个错误：

error: unknown option '-e'
 ELIFECYCLE  Command failed with exit code 1.

如果没有给出选项，它将运行子命令，所以只需

dashboard login

就可以正常工作。否则，它会抛出上面的错误。