Template literal types in TypeScript allow you to create string-based types dynamically by combining string literals, union types, and placeholders. They work similarly to JavaScript's template literals but are used at the type level.

With template literal types, you can construct new string literal types by interpolating other types inside backticks (`). This feature is useful for defining more precise types, enforcing naming conventions, and dynamically generating valid values.

Syntax

The basic syntax follows this structure:

type NewType = `${SomeType}`;