/**
 * Converts a string into a URL-friendly slug by:
 * 1. Converting to lowercase
 * 2. Replacing non-alphanumeric characters with hyphens
 * 3. Collapsing multiple hyphens into single hyphens
 * 4. Removing empty segments
 * 5. Removing leading and trailing hyphens
 *
 * @param str - The input string to convert into a slug
 * @returns A URL-friendly slug string
 * @example
 * slugify("Hello World!") // returns "hello-world"
 * slugify("Test & Case") // returns "test-case"
 * slugify("Multiple---Hyphens") // returns "multiple-hyphens"
 */
export declare const slugify: (str: string) => string;
export declare const extractSlugFromDiagnosisUrl: (diagnosisUrl: string) => string;
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