text: """ Extensions module. Each extension is initialized in the app factory located in app.py. """
  import os
  
  from celery import Celery
  from flask_debugtoolbar import DebugToolbarExtension
  from flask_mail import Mail
  from flask_wtf import CSRFProtect
  from flask_sqlalchemy import SQLAlchemy
  from flask_login import LoginManager
  from flask_babel import Babel
  from flask_static_digest import FlaskStaticDigest
  from flask_migrate import Migrate
  
  MIGRATION_DIR = os.path.join("kanban_boards", "migrations")
  
  debug_toolbar = DebugToolbarExtension()
  mail = Mail()
  csrf = CSRFProtect()
  db = SQLAlchemy()
  login_manager = LoginManager()
  babel = Babel()
  flask_static_digest = FlaskStaticDigest()
  migrate = Migrate(directory=MIGRATION_DIR)
  celery = Celery()
  