Template literal types let you build string types from pieces. Combine with unions to enumerate patterns such as route names or event keys.
type EventName = `user:${"created" | "updated"}`;type EventName = `user:${"created" | "updated"}`;
const evt: EventName = "user:created";
type Route = `/users/${string}`;
const profileRoute: Route = "/users/42";
type RGB = `rgb(${number}, ${number}, ${number})`;Understanding Template Literal Types is fundamental to mastering TypeScript. Practice with the examples above and experiment with variations to solidify your knowledge.