/**
 * Normalize package name by trimming whitespace.
 */
declare function normalizeName(rawName: unknown): string | undefined;
/**
 * Normalize package namespace by trimming and collapsing path separators.
 */
declare function normalizeNamespace(rawNamespace: unknown): string | undefined;
/**
 * Normalize purl path component by collapsing separators and filtering segments.
 */
declare function normalizePurlPath(pathname: string, options?: {
    filter?: ((_segment: string) => boolean) | undefined;
}): string;
/**
 * Normalize qualifiers by trimming values and lowercasing keys.
 */
declare function normalizeQualifiers(rawQualifiers: unknown): Record<string, string> | undefined;
/**
 * Normalize subpath by filtering invalid segments.
 */
declare function normalizeSubpath(rawSubpath: unknown): string | undefined;
/**
 * Normalize package type to lowercase.
 */
declare function normalizeType(rawType: unknown): string | undefined;
/**
 * Normalize package version by trimming whitespace.
 */
declare function normalizeVersion(rawVersion: unknown): string | undefined;
export { normalizeName, normalizeNamespace, normalizePurlPath, normalizeQualifiers, normalizeSubpath, normalizeType, normalizeVersion, };