/** Probe encoded dimensions before retaining a decoded image. Unknown/animated formats are skipped. */
export declare function imagePixels(bytes: Uint8Array): number | null;
/** The budget limits retained RGBA estimates, not the browser's total GPU/process memory. */
export declare function createImagePredecoder(): {
    prepare: (urls: string[], maxBytes: number) => Promise<void>;
    clear: () => void;
    stats: () => {
        images: number;
        bytes: number;
    };
};