nodeで対話型のシェル風コマンドツールを作る

npm init -y

pnpm i -D typescript ts-node @types/node
touch tsconfig.json

{
  "type": "module"
}

{
  "compilerOptions": {
    "module": "ESNext",
    "moduleResolution": "node"
  }
}

pnpm i zx

touch index.mts

import {$} from 'zx';

(async () => {
  await $`ls -la`;
})();

{
  "scripts": {
    "start": "node --loader ts-node/esm index.mts"
  },
}

pnpm start

drwxr-xr-x   8 user  staff    256 11  7 17:45 .
drwxr-xr-x   7 user  staff    224 11  7 16:38 ..
drwxr-xr-x  10 user  staff    320 11  7 17:22 node_modules
-rw-r--r--   1 user  staff    399 11  7 17:47 package.json
-rw-r--r--   1 user  staff  26137 11  7 17:22 pnpm-lock.yaml
-rw-r--r--   1 user  staff     63 11  7 17:40 index.mts
-rw-r--r--   1 user  staff     86 11  7 17:42 tsconfig.json

pnpm i inquirer
pnpm i -D @types/inquirer

import {$, echo} from 'zx';
import inquirer from 'inquirer';

(async () => {
  const choices = await inquirer.prompt<{userName: string}>([
    {name: 'userName', message: 'Enter your name.'},
  ]);
  echo(choices.userName);
})();

import {$} from 'zx';
import inquirer from 'inquirer';

(async () => {
  while (true) {
    const userCommand = await inquirer.prompt<{cmd: string}>([
      {
        type: 'rawlist',
        name: 'cmd',
        message: 'choose your command',
        choices: ['ls', 'pwd', 'exit'],
      },
    ]);

    await $`${userCommand.cmd}`;
    if (userCommand.cmd === 'exit') break;
  }
})();