import type { NdArray } from 'ndarray';
/**
 * Decodes image data to an `ndarray`.
 *
 * MIME type is optional when given a path or URL, and required when given a Uint8Array.
 *
 * Accepts `image/png` or `image/jpeg` in Node.js, and additional formats on browsers with
 * the necessary support in Canvas 2D.
 *
 * @param data
 * @param mimeType `image/jpeg`, `image/png`, etc.
 * @returns
 */
declare function getPixels(data: Uint8Array, mimeType: string): Promise<NdArray<Uint8Array>>;
/**
 * Encodes an `ndarray` as image data in the given format.
 *
 * If the source `ndarray` was constructed manually with default stride, use
 * `ndarray.transpose(1, 0)` to reshape it and ensure an identical result from getPixels(). For an
 * ndarray created by getPixels(), this isn't necessary.
 *
 * Accepts `image/png` or `image/jpeg` in Node.js, and additional formats on browsers with
 * the necessary support in Canvas 2D.
 *
 * @param pixels ndarray of shape W x H x 4.
 * @param typeOrOptions object with encoding options or just the type
 * @param typeOrOptions.type target format (`image/jpeg`, `image/png`, `image/webp`, etc.)
 * @param typeOrOptions.quality quality as a number from 0 to 1, inclusive
 * @returns
 */
declare function savePixels(pixels: NdArray<Uint8Array | Uint8ClampedArray>, typeOrOptions: string | {
    type?: string;
    quality?: number;
}): Promise<Uint8Array>;
export { getPixels, savePixels };