import { Relationship } from './relationships.js';
/** One part to write into the package: its path, bytes, and content type. */
export interface OpcPart {
    /** Package path, e.g. `'word/document.xml'`. No leading slash. */
    readonly path: string;
    readonly data: Uint8Array;
    /** Content type for the `[Content_Types].xml` Override (XML parts). */
    readonly contentType: string;
}
/**
 * A part's relationships (id/type/target[/External]). The reader returns the
 * same {@link Relationship} shape, so a writer round-trips through
 * `parseRelationships`.
 */
export interface OpcPartRelationships {
    /** The owning part, e.g. `'word/document.xml'` (or `''` for the package root). */
    readonly sourcePart: string;
    readonly relationships: ReadonlyArray<Relationship>;
}
/** The full input to {@link buildOpcPackage}: parts plus their relationships. */
export interface OpcWriteOptions {
    /** The content parts (excluding `[Content_Types].xml` and `.rels`, which are generated). */
    readonly parts: ReadonlyArray<OpcPart>;
    /** Package-level relationships (`_rels/.rels`). */
    readonly rootRelationships: ReadonlyArray<Relationship>;
    /** Per-part relationships (word/_rels/<part>.rels). */
    readonly partRelationships?: ReadonlyArray<OpcPartRelationships>;
    /**
     * Default content types by lowercase extension, for parts not given an
     * Override (typically binaries: png, jpeg…). `rels` and `xml` are always
     * present and need not be repeated.
     */
    readonly defaultsByExtension?: Readonly<Record<string, string>>;
}
/**
 * Assemble parts + relationships into a deterministic OPC ZIP: it synthesizes
 * `[Content_Types].xml` and the `.rels` parts, then zips everything with a fixed
 * timestamp so the same input always yields byte-identical output.
 *
 * @returns The packaged `.docx`/`.xlsx`/… bytes.
 */
export declare function buildOpcPackage(options: OpcWriteOptions): Uint8Array;
/**
 * The relationships-part path for a part: `word/document.xml` →
 * `word/_rels/document.xml.rels`. (`''` (root) is handled separately as
 * `_rels/.rels`.)
 */
export declare function relsPathFor(partPath: string): string;