612 - KebabCase

[lezhu1234]

// your answers
type KebabCase<S> = S extends `${infer R}${infer T}`
  ? `${Uncapitalize<R>}${T extends Uncapitalize<T> ? "" : "-"}${KebabCase<T>}`
  : S

The KebabCase type recursively breaks down a string into its first character and the rest, converting the first character to lowercase and adding a hyphen before any uppercase letters in the rest of the string. This process continues until the entire string is transformed into kebab-case