MUSTARD_EXAMPLE.ts

import { Cli, Command, Validator, OptionFactory } from "mustard-cli";
import { RegisterCommand, Option, Options, Input } from "mustard-cli/decorators";
import { PackageManager } from "mustard-cli/types";

const cli = Cli();

interface ICoreOptions {
  name: string;
  sayHi: boolean;
}

// foo --name linbudu --sayHi
@RegisterCommand()
class CoreCommand extends Command {
  @Options()
  commandArgs: ICoreOptions;

  run() {
    this.commandArgs.sayHi && this.logger.info(`Hi, ${this.commandArgs.name}!`);
  }
}

// foo create react-app --typescript --manager pnpm
@RegisterCommand("create", "create command!", {
  ignoreUnknownArgs: true,
})
class CreateSubCommand extends Command {
  // value: ‘react-app’
  @Input(Validator.required().isString())
  input: string;

  // value: true
  @Option()
  typescript: boolean;

  // value: ‘pnpm’
  @Option(Validator.custom(this.customManagerValidation))
  manager: PackageManager = this.preferredPackageManager();

  constructor() {
    super();
  }

  customManagerValidation(manager: string) {
    if (!["npm", "yarn", "pnpm"].includes(manager)) {
      return {
        success: false,
        message: `${manager} is not any known manager.`,
      };
    }
  }

  run() {}
}

cli.initialize();

cli.enableUsage({});
cli.enableHelpCommand();
cli.enableVersionCommand(require("../package.json").version, {
  flag: OptionFactory.create("version").alias("v"),
});

cli.enableUpdateNotifier({
  forceUpdate: true,
});