/**
 * Converts a string to camelCase format.
 *
 * @param input - The input string to convert (can be kebab-case, snake_case, or space-separated)
 * @returns The string converted to camelCase (first letter lowercase, subsequent words capitalized)
 *
 * @example
 * toCamelCase("hello-world") // returns "helloWorld"
 * toCamelCase("hello_world") // returns "helloWorld"
 * toCamelCase("hello world") // returns "helloWorld"
 */
export declare function toCamelCase(input: string): string;
/**
 * Converts a string to kebab-case format.
 *
 * @param input - The input string to convert (can be camelCase, snake_case, or space-separated)
 * @returns The string converted to kebab-case (lowercase with hyphens between words)
 *
 * @example
 * toKebabCase("helloWorld") // returns "hello-world"
 * toKebabCase("hello_world") // returns "hello-world"
 * toKebabCase("hello world") // returns "hello-world"
 */
export declare function toKebabCase(input: string): string;
/**
 * Converts a string to snake_case format.
 *
 * @param input - The input string to convert (can be camelCase, kebab-case, or space-separated)
 * @returns The string converted to snake_case (lowercase with underscores between words)
 *
 * @example
 * toSnakeCase("helloWorld") // returns "hello_world"
 * toSnakeCase("hello-world") // returns "hello_world"
 * toSnakeCase("hello world") // returns "hello_world"
 */
export declare function toSnakeCase(input: string): string;
/**
 * Converts a string to Title Case format.
 *
 * @param input - The input string to convert
 * @returns The string converted to Title Case (first letter of each word capitalized, rest lowercase)
 *
 * @example
 * toTitleCase("hello world") // returns "Hello World"
 * toTitleCase("helloWorld") // returns "HelloWorld"
 * toTitleCase("hello-world") // returns "Hello-World"
 */
export declare function toTitleCase(input: string): string;
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