developer-tools

Developer Tools

Overview

Building command-line interfaces, SDKs, and tools that enhance developer experience.

CLI Development

CLI Framework (Commander)

#!/usr/bin/env node
import { Command } from 'commander';
import chalk from 'chalk';
import ora from 'ora';
import inquirer from 'inquirer';

const program = new Command();

program
  .name('myctl')
  .description('CLI tool for managing resources')
  .version('1.0.0');

// Simple command
program
  .command('init')
  .description('Initialize a new project')
  .option('-t, --template <name>', 'Template to use', 'default')
  .option('-d, --directory <path>', 'Target directory', '.')
  .action(async (options) => {
    const spinner = ora('Initializing project...').start();

    try {
      await initProject(options.template, options.directory);
      spinner.succeed(chalk.green('Project initialized successfully!'));
    } catch (error) {
      spinner.fail(chalk.red(`Failed: ${error.message}`));
      process.exit(1);
    }
  });

// Interactive command
program
  .command('create <name>')
  .description('Create a new resource')
  .action(async (name) => {
    const answers = await inquirer.prompt([
      {
        type: 'list',
        name: 'type',
        message: 'Select resource type:',
        choices: ['api', 'worker', 'database'],
      },
      {
        type: 'input',
        name: 'description',
        message: 'Description:',
      },
      {
        type: 'confirm',
        name: 'public',
        message: 'Make it public?',
        default: false,
      },
    ]);

    await createResource(name, answers);
    console.log(chalk.green(`Created ${answers.type}: ${name}`));
  });

// Subcommands
const configCmd = program.command('config').description('Manage configuration');

configCmd
  .command('set <key> <value>')
  .description('Set a config value')
  .action(async (key, value) => {
    await setConfig(key, value);
    console.log(`Set ${key}=${value}`);
  });

configCmd
  .command('get <key>')
  .description('Get a config value')
  .action(async (key) => {
    const value = await getConfig(key);
    console.log(value);
  });

configCmd
  .command('list')
  .description('List all config values')
  .action(async () => {
    const config = await getAllConfig();
    console.table(config);
  });

// Global options
program
  .option('--debug', 'Enable debug mode')
  .option('--json', 'Output as JSON')
  .hook('preAction', (thisCommand) => {
    if (thisCommand.opts().debug) {
      process.env.DEBUG = 'true';
    }
  });

program.parse();