https://refactoring.guru/design-patterns/facade
Target: Avoid call many function from something or package.
A facade is a class that provides a simple interface to a complex subsystem which contains lots of moving parts. A facade might provide limited functionality in comparison to working with the subsystem directly. However, it includes only those features that clients really care about.
Example:
When you want to order pizza. Just call to the operator who provide you all function of shop like order, payment, delivery,...
interface IGameFacade { startGame(): void; pauseGame(): void; endGame(): void; } class GameFacade implements IGameFacade { private physicsSystem: PhysicsSystem; private uiManager: UIManager; constructor() { this.physicsSystem = new PhysicsSystem(); this.uiManager = new UIManager(); } startGame() { this.physicsSystem.enable(); this.uiManager.showGameUI(); console.log("Game started!"); } pauseGame() { this.physicsSystem.disable(); this.uiManager.showPauseMenu(); console.log("Game paused."); } endGame() { this.physicsSystem.reset(); this.uiManager.showEndScreen(); console.log("Game ended."); } } class PhysicsSystem { enable() { console.log("Physics enabled"); } disable() { console.log("Physics disabled"); } reset() { console.log("Physics reset"); } } class UIManager { showGameUI() { console.log("Game UI shown"); } showPauseMenu() { console.log("Pause menu shown"); } showEndScreen() { console.log("End screen shown"); } } // Usage const game = new GameFacade(); game.startGame(); game.pauseGame(); 
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