/**
 * Losslessly compresses PNG icon files using OptiPNG.
 * Mimics how ImgBot compresses images: lossless PNG compression at optimization level 7
 * with metadata stripping.
 */
export declare class IconsCompressor {
    private readonly iconsDir;
    constructor(iconsDir: string);
    /**
     * Compress all PNG files in the icon directory using OptiPNG.
     */
    compress(): Promise<void>;
    /**
     * Get the path to the optipng binary from optipng-bin package.
     * Uses require.resolve to find the package root, then constructs the vendor binary path.
     */
    getOptipngPath(): string;
}