import yargs from "yargs";
import { hideBin } from "yargs/helpers";

yargs(hideBin(process.argv))
  .command("new", "new a project", async (yargs) => {
    return yargs
      .options("op1", {
        description: "option1",
        default: "option1",
        global: false,
        type: "string",
        coerce: (arg?: string) => arg?.toLocaleLowerCase(), // if comment this line, it works well.
      })
      .command(
        "template",
        "new a project from a template",
        async (yargs) => {
          return yargs.options("op2", {
            description: "option2",
            default: "option2",
          });
        },
        async (args: any) => {
          console.log(args);
        }
      );
  })
  .strict()
  .help().argv;