import { R as ResizeOptions, d as FormatMeta } from '../types-mKodz4f_.js';

/**
 * Canvas abstraction: works in both main thread (HTMLCanvasElement)
 * and Web Worker (OffscreenCanvas).
 */
type AnyCanvas$3 = HTMLCanvasElement | OffscreenCanvas;
/** Create a Canvas of the given dimensions (auto-detects Worker vs main thread) */
declare function createCanvas(width: number, height: number): AnyCanvas$3;
/**
 * Convert a Canvas to a Blob. Handles both HTMLCanvasElement.toBlob()
 * and OffscreenCanvas.convertToBlob() transparently.
 */
declare function canvasToBlob(canvas: AnyCanvas$3, type: string, quality?: number): Promise<Blob>;

type AnyCanvas$2 = HTMLCanvasElement | OffscreenCanvas;
/**
 * Resize an ImageBitmap or Canvas to target dimensions.
 * Returns a new Canvas with the resized image.
 *
 * @throws {TransformError} if the canvas dimensions exceed browser limits
 */
declare function resize(source: ImageBitmap | AnyCanvas$2, opts: ResizeOptions): AnyCanvas$2;

type AnyCanvas$1 = HTMLCanvasElement | OffscreenCanvas;
/**
 * Composite an image onto a white background.
 * Required for formats that don't support transparency (JPEG, BMP).
 *
 * If the target format supports transparency, returns the original canvas unchanged.
 */
declare function compositeAlpha(canvas: AnyCanvas$1, meta: FormatMeta): AnyCanvas$1;

type AnyCanvas = HTMLCanvasElement | OffscreenCanvas;
/**
 * Full transform: ImageBitmap → Canvas with optional resize + alpha compositing.
 *
 * @param bitmap  - Decoded ImageBitmap from the HEIC decoder
 * @param meta    - Encoder metadata (used to determine alpha compositing needs)
 * @param resizeOpts - Optional resize config
 * @returns A ready-to-encode Canvas
 */
declare function toCanvas(bitmap: ImageBitmap, meta: FormatMeta, resizeOpts?: ResizeOptions): AnyCanvas;

export { canvasToBlob, compositeAlpha, createCanvas, resize, toCanvas };