Design Patterns MCP Server

{ "id": "builder", "name": "Builder", "category": "Creational", "description": "Constructs complex objects step by step, separating construction from representation", "when_to_use": "Complex object construction\nMultiple representations\nStep-by-step creation", "benefits": "Fine control over construction\nCode reusability\nImmutable objects", "drawbacks": "Code duplication\nIncreased complexity", "use_cases": "SQL query builders\nUI component builders\nConfiguration builders", "complexity": "Medium", "tags": [ "creational", "builder", "fluent-interface" ], "examples": { "typescript": { "language": "typescript", "code": "class Car {\n engine?: string;\n seats?: number;\n gps?: boolean;\n}\n\nclass CarBuilder {\n private car = new Car();\n\n setEngine(engine: string) { this.car.engine = engine; return this; }\n setSeats(seats: number) { this.car.seats = seats; return this; }\n setGPS(gps: boolean) { this.car.gps = gps; return this; }\n build() { return this.car; }\n}\n\n// Usage: construct complex objects step by step\nconst car = new CarBuilder()\n .setEngine('V8')\n .setSeats(4)\n .setGPS(true)\n .build();" } } }