/**
 * One `<Relationship>` (ECMA-376 Part 2 §9.3): its id, Type URI, target, and
 * whether the target is package-`Internal` or `External` (defaults to Internal
 * when the attribute is absent).
 */
export interface Relationship {
    readonly id: string;
    readonly type: string;
    readonly target: string;
    readonly targetMode: 'Internal' | 'External';
}
/**
 * Parse a relationships part (`_rels/*.rels`) into {@link Relationship}s.
 * Tolerates a namespace prefix on the elements; returns `[]` when there are no
 * relationships.
 *
 * @throws Error when a `<Relationship>` lacks a required `Id`/`Type`/`Target`.
 */
export declare function parseRelationships(data: Uint8Array): Array<Relationship>;