export type PDFDocumentProxy = any;
import { PdfPage } from './PdfPage.js';
/**
 * Wraps a PDF.js document. Pages are built lazily on first access and can be
 * released individually (via releasePage) or all at once (via releaseAll).
 *
 * Releasing a page calls pdf.js's PDFPageProxy.cleanup() to drop worker-side
 * state, then evicts the wrapper. The same page can be re-requested afterwards
 * and will be rebuilt on demand.
 */
export declare class PdfDocument {
    private proxy;
    private scale?;
    private pageCache;
    private destroyed;
    constructor(proxy: PDFDocumentProxy, scale?: number | undefined);
    /**
     * Kept for backwards compatibility. Previously eagerly loaded every page's
     * operator list at initialize time, which cost ~3-4 MB RSS per page. Now a
     * no-op besides progress reporting — pages are built lazily by getPage().
     */
    process(onProgress?: (event: {
        loaded: number;
        total: number;
    }) => void): Promise<void>;
    getPage(pageNumber: number): Promise<PdfPage>;
    /**
     * Release pdf.js worker-side state for a page and evict the wrapper from
     * the cache. Safe to call repeatedly; rebuild happens on next getPage(n).
     */
    releasePage(pageNumber: number): Promise<void>;
    /**
     * Release every cached page. Subsequent getPage() calls rebuild as needed.
     * Also asks pdf.js to drop its document-level caches (fonts, color spaces,
     * image dictionaries) which accumulate across pages and aren't reached by
     * per-page cleanup alone.
     */
    releaseAll(): Promise<void>;
    /**
     * Drop pdf.js's document-level caches without destroying the document.
     * Safe to call between page batches in a long-running loop.
     */
    cleanupCaches(): Promise<void>;
    /**
     * Terminate the underlying PDF.js document. After destroy(), the instance
     * is unusable. Call this in a dispose() path.
     */
    destroy(): Promise<void>;
    getRawPage(pageNumber: number): Promise<any>;
    getOutline(): any;
    getData(): any;
    get fingerprint(): any;
    get numPages(): any;
    get isDestroyed(): boolean;
    get rawProxy(): any;
    get pages(): PdfPage[];
}
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