import type { Package } from './archive.js';
/** Well-known OPC relationship types (Transitional form). */
export declare const relType: {
    readonly OFFICE_DOCUMENT: "http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument";
    readonly STYLES: "http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles";
    readonly NUMBERING: "http://schemas.openxmlformats.org/officeDocument/2006/relationships/numbering";
    readonly FOOTNOTES: "http://schemas.openxmlformats.org/officeDocument/2006/relationships/footnotes";
    readonly ENDNOTES: "http://schemas.openxmlformats.org/officeDocument/2006/relationships/endnotes";
};
export type TargetMode = 'internal' | 'external';
export interface Relationship {
    target: string;
    relType: string;
    mode: TargetMode;
}
export declare class Relationships {
    private readonly map;
    constructor(map?: Map<string, Relationship>);
    get(id: string): Relationship | undefined;
    internalTarget(id: string): string | undefined;
    entries(): IterableIterator<[string, Relationship]>;
    /** Internal-mode relationship of a given type, lowest id first. */
    firstOfType(type: string): Relationship | undefined;
}
export declare function readRels(pkg: Package, part: string): Relationships;
/** A loaded internal relationship target: its resolved part path and bytes. */
export type RelTarget = [string, Uint8Array];
export declare function relTargetBytes(pkg: Package, rels: Relationships, basePart: string, relId: string): RelTarget | undefined;
/** Conventional rels part name for a part. */
export declare function relsPartFor(part: string): string;