/**
 * Configuration options for text transformation functions.
 *
 * @public
 */
export interface Options {
    /** Regular expression(s) to split words on boundaries */
    splitRegexp?: RegExp | RegExp[];
    /** Regular expression(s) to strip unwanted characters */
    stripRegexp?: RegExp | RegExp[];
    /** Delimiter to use between words in the output */
    delimiter?: string;
    /** Custom transformation function for each word */
    transform?: (part: string, index: number, parts: string[]) => string;
}
/**
 * Normalize text into a consistent format that other transformation functions can use.
 *
 * This is the foundation function used by all other case conversion libraries.
 * It handles word splitting, character stripping, and applies transformations
 * to create a normalized output.
 *
 * @param input - The string to normalize
 * @param options - Configuration options for the normalization
 * @returns The normalized string
 *
 * @example
 * ```typescript
 * noCase("helloWorld")           // "hello world"
 * noCase("user_profile_data")    // "user profile data"
 * noCase("XMLHttpRequest")       // "xml http request"
 * noCase("iPhone")               // "i phone"
 *
 * // With custom delimiter
 * noCase("hello world", { delimiter: "-" })  // "hello-world"
 *
 * // With custom transform
 * noCase("hello world", {
 *   transform: (word) => word.toUpperCase()
 * }) // "HELLO WORLD"
 * ```
 *
 * @public
 */
export declare function noCase(input: string, options?: Options): string;