Automatizar tareas repetitivas como desarrollador

## Automation Candidates (1 week log)
 
### High Frequency (daily)
- Creating new React component files (same structure every time)
- Running database migrations before starting dev server
- Switching between Git branches and rebuilding
 
### Medium Frequency (weekly)
- Setting up test fixtures for integration tests
- Generating API client code from OpenAPI specs
- Creating pull request descriptions from commit history
 
### Low Frequency (monthly)
- Spinning up a new microservice from template
- Rotating API keys across environments
- Generating release notes from merged PRs

// ❌ Manual component creation — every single time
// 1. Create src/components/UserProfile/
// 2. Create UserProfile.tsx with boilerplate
// 3. Create UserProfile.test.tsx with test structure
// 4. Create index.ts with export
// 5. Add to component barrel file
// Time: 3-5 minutes, repeated 3x per day = 15 minutes/day
 
// ✅ Automated — one command
// $ gen component UserProfile
// Creates all 4 files with correct structure
// Time: 5 seconds

# ~/.zshrc or ~/.bashrc
 
# Git shortcuts
alias gs='git status'
alias gco='git checkout'
alias gp='git pull --rebase'
alias gcm='git commit -m'
 
# Development workflow
alias dev='npm run dev'
alias build='npm run build'
alias test='npm run test'
alias lint='npm run lint -- --fix'
 
# Complex workflows as functions
function fresh() {
  # Fresh start: pull latest, install deps, run migrations, start dev
  echo "🔄 Pulling latest changes..."
  git pull --rebase origin main
  echo "📦 Installing dependencies..."
  npm ci
  echo "🗄️  Running migrations..."
  npm run db:migrate
  echo "🚀 Starting dev server..."
  npm run dev
}
 
function branch() {
  # Create a new feature branch from latest main
  local branch_name=$1
  if [ -z "$branch_name" ]; then
    echo "Usage: branch feat/my-feature"
    return 1
  fi
  git checkout main
  git pull --rebase
  git checkout -b "$branch_name"
  echo "Created and switched to $branch_name"
}

# ❌ Multiple commands every time you start work
git checkout main
git pull --rebase
npm ci
npm run db:migrate
npm run dev
# Time: 2 minutes of typing + waiting
 
# ✅ One command
fresh
# Same result, zero thinking, zero typos

// scripts/generate-component.ts
import fs from 'fs';
import path from 'path';
 
interface ComponentConfig {
  name: string;
  directory: string;
  withTests: boolean;
  withStories: boolean;
}
 
function generateComponent(config: ComponentConfig): void {
  const dir = path.join(config.directory, config.name);
  fs.mkdirSync(dir, { recursive: true });
 
  // Component file
  const component = `interface ${config.name}Props {
  className?: string;
}
 
export function ${config.name}({ className }: ${config.name}Props) {
  return (
    <div className={className}>
      <h2>${config.name}</h2>
    </div>
  );
}
`;
  fs.writeFileSync(path.join(dir, `${config.name}.tsx`), component);
 
  // Test file
  if (config.withTests) {
    const test = `import { render, screen } from '@testing-library/react';
import { ${config.name} } from './${config.name}';
 
describe('${config.name}', () => {
  it('renders without crashing', () => {
    render(<${config.name} />);
    expect(screen.getByText('${config.name}')).toBeInTheDocument();
  });
});
`;
    fs.writeFileSync(
      path.join(dir, `${config.name}.test.tsx`),
      test
    );
  }
 
  // Index file
  const index = `export { ${config.name} } from './${config.name}';\n`;
  fs.writeFileSync(path.join(dir, 'index.ts'), index);
 
  console.log(`Created ${config.name} in ${dir}`);
}
 
// CLI entry point
const name = process.argv[2];
if (!name) {
  console.error('Usage: tsx scripts/generate-component.ts MyComponent');
  process.exit(1);
}
 
generateComponent({
  name,
  directory: 'src/components',
  withTests: true,
  withStories: false,
});

# .husky/pre-commit — lint only changed files
npx lint-staged
 
# .husky/commit-msg — enforce commit message format
#!/bin/sh
COMMIT_MSG=$(cat "$1")
PATTERN="^(feat|fix|docs|style|refactor|perf|test|chore|ci|revert)(\(.+\))?: .{1,100}$"
 
if ! echo "$COMMIT_MSG" | grep -qE "$PATTERN"; then
  echo "❌ Commit message does not match conventional format."
  echo "   Expected: type(scope): description"
  echo "   Example: feat(auth): add password reset flow"
  exit 1
fi

// lint-staged.config.json — auto-format on commit
{
  "*.{ts,tsx}": ["eslint --fix", "prettier --write"],
  "*.{css,scss}": ["prettier --write"],
  "*.md": ["prettier --write"]
}

#!/bin/bash
# scripts/sync-staging.sh — pull staging database for local development
 
set -euo pipefail
 
DB_NAME="myapp_dev"
STAGING_URL="${STAGING_DATABASE_URL:?Set STAGING_DATABASE_URL}"
 
echo "⬇️  Dumping staging database..."
pg_dump "$STAGING_URL" \
  --no-owner \
  --no-privileges \
  --exclude-table='sessions' \
  --exclude-table='audit_logs' \
  > /tmp/staging_dump.sql
 
echo "🗑️  Dropping local database..."
dropdb --if-exists "$DB_NAME"
createdb "$DB_NAME"
 
echo "📥 Restoring to local..."
psql "$DB_NAME" < /tmp/staging_dump.sql
 
echo "🔒 Anonymizing PII..."
psql "$DB_NAME" <<SQL
  UPDATE users SET
    email = 'user_' || id || '@test.local',
    first_name = 'Test',
    last_name = 'User_' || id;
SQL
 
rm /tmp/staging_dump.sql
echo "✅ Local database synced with anonymized staging data"

// scripts/generate-api-client.ts
// Auto-generate TypeScript API client from OpenAPI spec
 
import { execSync } from 'child_process';
 
const SPEC_URL = 'https://api.example.com/openapi.json';
const OUTPUT_DIR = 'src/api/generated';
 
// Generate client using openapi-typescript-codegen
execSync(
  `npx openapi-typescript-codegen \
    --input ${SPEC_URL} \
    --output ${OUTPUT_DIR} \
    --client fetch \
    --useOptions`,
  { stdio: 'inherit' }
);
 
console.log(`API client generated in ${OUTPUT_DIR}`);

// scripts/scaffold-service.ts
import fs from 'fs';
import path from 'path';
 
interface ServiceConfig {
  name: string;
  port: number;
  hasDatabase: boolean;
  hasRedis: boolean;
}
 
function scaffoldService(config: ServiceConfig): void {
  const base = path.join('services', config.name);
 
  const structure: Record<string, string> = {
    'src/index.ts': generateEntryPoint(config),
    'src/routes/health.ts': generateHealthRoute(config),
    'Dockerfile': generateDockerfile(config),
    'docker-compose.yml': generateDockerCompose(config),
    '.env.example': generateEnvExample(config),
    'tsconfig.json': JSON.stringify(tsconfig, null, 2),
    'package.json': JSON.stringify(
      generatePackageJson(config),
      null,
      2
    ),
  };
 
  for (const [filePath, content] of Object.entries(structure)) {
    const fullPath = path.join(base, filePath);
    fs.mkdirSync(path.dirname(fullPath), { recursive: true });
    fs.writeFileSync(fullPath, content);
  }
 
  console.log(`Scaffolded service '${config.name}' in ${base}/`);
  console.log(`Next steps:`);
  console.log(`  cd ${base}`);
  console.log(`  npm install`);
  console.log(`  npm run dev`);
}

# ❌ Manual service creation
# 1. Create directory structure (5 min)
# 2. Copy and modify Dockerfile from another service (10 min)
# 3. Set up tsconfig, package.json, eslint config (15 min)
# 4. Create health check route (5 min)
# 5. Set up docker-compose with database (10 min)
# 6. Configure CI pipeline (15 min)
# Time: ~1 hour, inconsistent across services
 
# ✅ Scaffolded in seconds
npx tsx scripts/scaffold-service.ts --name user-service --port 3001 --db --redis
# Time: 10 seconds, consistent every time