import type { WebpDecodeOptions, WebpImageData } from './types';
/**
 * Decode a WebP image buffer to RGBA pixel data.
 *
 * Supported containers:
 *   - simple `RIFF/WEBP/VP8 ` (lossy VP8) — bit-exact with `dwebp`
 *   - simple `RIFF/WEBP/VP8L` (lossless) — round-trips exactly
 *   - extended `RIFF/WEBP/VP8X + VP8L` (lossless with optional alpha)
 *   - extended `RIFF/WEBP/VP8X + ALPH + VP8 ` (lossy with alpha)
 *
 * VP8L is preferred over VP8 when both are present in the same
 * container (rare, but valid in some extended-format files).
 */
export declare function decode(buffer: Uint8Array | ArrayBuffer, options?: WebpDecodeOptions): WebpImageData;