/**
 * Set of properties exposed under `docProps/core.xml`. All fields are optional;
 * the workbook only emits those that are set. Timestamps are stored as ISO-8601
 * strings (the W3CDTF subset) — no Date conversion happens at this layer;
 * phase-3 saveWorkbook is responsible for stamping `modified` to `now()` on
 * each save.
 */
export interface CoreProperties {
    category?: string;
    contentStatus?: string;
    /** ISO-8601 W3CDTF; auto-stamped on save in phase 3. */
    created?: string;
    creator?: string;
    description?: string;
    identifier?: string;
    keywords?: string;
    language?: string;
    lastModifiedBy?: string;
    /** ISO-8601 W3CDTF. */
    lastPrinted?: string;
    /** ISO-8601 W3CDTF; auto-stamped on save in phase 3. */
    modified?: string;
    revision?: string;
    subject?: string;
    title?: string;
    version?: string;
}
export declare function makeCoreProperties(): CoreProperties;
export declare function corePropsToBytes(p: CoreProperties): Uint8Array;
export declare function corePropsFromBytes(bytes: Uint8Array | string): CoreProperties;
import type { Workbook } from '../workbook/workbook';
/** Set the document author (Excel "File → Properties → Author"). */
export declare const setWorkbookCreator: (wb: Workbook, creator: string) => void;
/** Set the document title. */
export declare const setWorkbookTitle: (wb: Workbook, title: string) => void;
/** Set the document subject. */
export declare const setWorkbookSubject: (wb: Workbook, subject: string) => void;
/** Set the document description / abstract. */
export declare const setWorkbookDescription: (wb: Workbook, description: string) => void;
/** Set comma- or semicolon-separated keywords. */
export declare const setWorkbookKeywords: (wb: Workbook, keywords: string) => void;
/** Set the "last modified by" name (defaults to creator if absent). */
export declare const setWorkbookLastModifiedBy: (wb: Workbook, name: string) => void;
/** Set the document category (e.g. "Reports", "Drafts"). */
export declare const setWorkbookCategory: (wb: Workbook, category: string) => void;