Technology-Specific Examples

React/TypeScript Projects

Component Renaming

# Rename a React component across the entire project
renamify rename UserCard ProfileCard \
  --include "src/**/*.{tsx,ts,js,jsx}" \
  --exclude "**/*.test.*"

# Or use specific paths
renamify rename UserCard ProfileCard src/components/ src/pages/

Changes made:

• Component files: UserCard.tsx → ProfileCard.tsx
• Test files: UserCard.test.tsx → ProfileCard.test.tsx (if not excluded)
• Import statements: import UserCard from './UserCard'
• JSX usage: <UserCard /> → <ProfileCard />
• Type definitions: UserCardProps → ProfileCardProps

Hook Renaming

# Rename a custom React hook
renamify rename useUserData useProfileData \
  --include "src/**/*.{ts,tsx}"

# Or target specific directories
renamify rename useUserData useProfileData src/hooks/ src/components/

Changes made:

// Before
function useUserData(id: string) { ... }
const { data, loading } = useUserData(userId);

// After
function useProfileData(id: string) { ... }
const { data, loading } = useProfileData(userId);

Python Projects

Django Model Renaming

# Rename Django models and related code
renamify rename UserProfile AccountProfile \
  --include "**/*.py" \
  --exclude "migrations/**"

# Or target specific app directories
renamify rename UserProfile AccountProfile apps/users/ apps/accounts/

Changes made:

# models.py - Before
class UserProfile(models.Model):
    def get_user_profile_display(self): ...

# models.py - After
class AccountProfile(models.Model):
    def get_account_profile_display(self): ...

# views.py - Before
def user_profile_view(request): ...
profile = UserProfile.objects.get(id=1)

# views.py - After
def account_profile_view(request): ...
profile = AccountProfile.objects.get(id=1)

Flask API Renaming

# Rename Flask route handlers
renamify rename getUserData fetchUserProfile \
  --include "**/*.py" \
  --exclude "venv/**"

# Or target specific modules
renamify rename getUserData fetchUserProfile app/ routes/

Rust Projects

Module Renaming

# Rename Rust modules and functions
renamify rename user_manager profile_manager \
  --include "**/*.rs" \
  --exclude "target/**"

# Or target specific source directories
renamify rename user_manager profile_manager src/ lib/

Changes made:

// Before
mod user_manager {
    pub fn get_user_manager() -> UserManager { ... }
}
use user_manager::UserManager;

// After
mod profile_manager {
    pub fn get_profile_manager() -> ProfileManager { ... }
}
use profile_manager::ProfileManager;

Cargo.toml Updates

# Rename crate references
renamify rename my_crate awesome_crate \
  --include "**/Cargo.toml,**/*.rs"

Go Projects

Package Renaming

# Rename Go packages
renamify rename userservice profileservice \
  --include "**/*.go" \
  --exclude "vendor/**"

# Or target specific packages
renamify rename userservice profileservice pkg/ cmd/

Changes made:

// Before
package userservice

func GetUserService() *UserService { ... }

// After
package profileservice

func GetProfileService() *ProfileService { ... }

Node.js/JavaScript Projects

NPM Package Renaming

# Rename throughout a Node.js project
renamify rename mypackage awesome_package \
  --include "**/*.{js,json,md}" \
  --exclude "node_modules/**"

# Or target specific directories
renamify rename mypackage awesome_package src/ lib/ docs/

Changes made:

• package.json name field
• Import statements: require('mypackage')
• Documentation references
• Configuration files

Express.js Routes

# Rename Express route handlers
renamify rename userRoutes profileRoutes \
  --include "**/*.js" \
  --exclude "node_modules/**"

# Or target route directories
renamify rename userRoutes profileRoutes routes/ controllers/

Database Projects

SQL Schema Renaming

# Rename database tables and columns (be careful!)
renamify rename user_data profile_data \
  --include "**/*.sql" \
  --exclude "migrations/**" \
  --dry-run  # Always dry-run first for SQL!

Changes made:

-- Before
CREATE TABLE user_data (
    id SERIAL PRIMARY KEY,
    user_data_json JSONB
);

-- After
CREATE TABLE profile_data (
    id SERIAL PRIMARY KEY,
    profile_data_json JSONB
);

Configuration Files

Environment Variables

# Update environment variable names
renamify rename DATABASE_HOST DB_HOST \
  --include "**/*.{env,yml,yaml,json}"

Docker and K8s

# Rename service references in Docker/K8s files
renamify rename userservice profileservice \
  --include "**/*.{yml,yaml,dockerfile}"

Multi-Language Projects

Microservices Architecture

# Rename across multiple languages in a microservice setup
renamify rename userservice profileservice \
  --include "**/*.{js,py,go,rs,yml,yaml,json}" \
  --exclude "**/node_modules/**,**/target/**,**/__pycache__/**"

# Or target specific service directories
renamify rename userservice profileservice services/ api/ config/

This handles:

• Service names in configuration files
• API endpoint references
• Docker service names
• Inter-service communication code
• Documentation updates

Framework-Specific Tips

Next.js Projects

# Include Next.js specific files
renamify rename oldPage newPage \
  --include "**/*.{tsx,ts,js,jsx}" \
  --include "pages/**" \
  --include "app/**"

# Or target specific Next.js directories
renamify rename oldPage newPage pages/ app/ components/

Vue.js Projects

# Include Vue single file components
renamify rename UserWidget ProfileWidget \
  --include "**/*.{vue,js,ts}" \
  --include "src/components/**"

# Or target Vue directories
renamify rename UserWidget ProfileWidget src/components/ src/views/

Laravel Projects

# PHP Laravel project renaming
renamify rename UserController ProfileController \
  --include "**/*.php" \
  --exclude "vendor/**"

# Or target specific Laravel directories
renamify rename UserController ProfileController app/Http/Controllers/ app/Models/

Best Practices by Technology

Always Exclude Dependencies

• Node.js: --exclude "node_modules/**"
• Rust: --exclude "target/**"
• Python: --exclude "venv/**,__pycache__/**"
• Go: --exclude "vendor/**"

Include Relevant Extensions

• Web: --include "**/*.{js,ts,tsx,jsx,html,css,scss}"
• Backend: --include "**/*.{py,js,go,rs,rb,php}"
• Config: --include "**/*.{json,yml,yaml,toml,env}"

Test Safely First

# Always start with dry-run for unfamiliar codebases
renamify dry-run pattern replacement --include "src/**"