/**
 * Converts a string to kebab-case.
 *
 * Replaces spaces, underscores, camelCase transitions, and other separators with dashes.
 * It also preserves version tokens like "v2" and lowercases the result.
 *
 * @example
 * ```ts
 * toKebabCase("hello world"); // "hello-world"
 * ```
 *
 * @example
 * ```ts
 * toKebabCase("first_name"); // "first-name"
 * ```
 *
 * @example
 * ```ts
 * toKebabCase("userProfile42"); // "user-profile-42"
 * ```
 *
 * @example
 * ```ts
 * toKebabCase("APIResponseV2"); // "api-response-v2"
 * ```
 *
 * @example
 * ```ts
 * toKebabCase("HTML5_Parser v3"); // "html-5-parser-v3"
 * ```
 *
 * @example
 * ```ts
 * toKebabCase("  Leading_and trailing   "); // "leading-and-trailing"
 * ```
 *
 * @param input A string to be converted to kebab-case.
 * @returns The kebab-cased version of the input string.
 */
export declare function toKebabCase(input: string): string;