/** Minimal shape of the pdf.js module + objects we rely on. */
export interface PdfViewportLike {
    width: number;
    height: number;
}
export interface PdfPageLike {
    getViewport(opts: {
        scale: number;
    }): PdfViewportLike;
    render(opts: {
        canvasContext: CanvasRenderingContext2D | null;
        viewport: PdfViewportLike;
    }): {
        promise: Promise<void>;
    };
}
export interface PdfDocumentLike {
    numPages: number;
    getPage(n: number): Promise<PdfPageLike>;
}
export interface PdfjsLike {
    getDocument(src: {
        url: string;
    }): {
        promise: Promise<PdfDocumentLike>;
    };
    GlobalWorkerOptions: {
        workerSrc: string;
    };
}
export interface PdfPreviewOptions {
    /** Turn inline PDF rendering on/off globally. When false, always show the card. */
    enabled?: boolean;
    /** Override the pdf.js module loader (self-host / CSP / version pin). */
    load?: () => Promise<PdfjsLike>;
    /** Worker URL. Default = the matching jsDelivr worker for the pinned version. */
    workerSrc?: string;
}
export declare function configurePdfPreview(options: PdfPreviewOptions): void;
export declare function isPdfPreviewEnabled(): boolean;
export declare function __resetPdfPreviewForTests(): void;
/**
 * Render EVERY page of the PDF at `url` into `container` as stacked <canvas>
 * elements fit to `pxWidth` CSS pixels (rendered at devicePixelRatio for
 * crispness). Clears `container` first. Resolves `{ pages }`. THROWS on
 * load / CORS / parse failure — the caller catches and shows the fallback card.
 */
export declare function renderPdfInto(url: string, container: HTMLElement, pxWidth: number): Promise<{
    pages: number;
}>;