// Template literal types (runtime illustration) type Greeting = `Hello, ${string}`; const validGreeting: Greeting = "Hello, World!"; console.log(validGreeting); // Style pattern type Color = "red" | "green" | "blue"; type Size = "small" | "medium" | "large"; type Style = `${Color}-${Size}`; const examples: Style[] = ["red-small", "green-medium", "blue-large"]; console.log(JSON.stringify(examples));