/**
 * Compresses SFNT (TrueType/OpenType) font data to WOFF2 font data.
 *
 * @param buffer The SFNT font data.
 * @returns A promise resolving to the WOFF2 font data.
 */
export function compress(buffer: ArrayBuffer | Uint8Array): Promise<Uint8Array>;
/**
 * Decompresses WOFF2 font data back to SFNT (TrueType/OpenType) font data.
 *
 * @param buffer The WOFF2 font data.
 * @returns A promise resolving to the SFNT font data.
 */
export function decompress(buffer: ArrayBuffer | Uint8Array): Promise<Uint8Array>;