import { ParsedGif, ParsedFrame } from 'gifuct-js';
import { GetArrTypeUnion } from './helper';
export type IFrames = Pick<ParsedGif, 'frames'>['frames'];
export type IFrame = GetArrTypeUnion<IFrames>;
export interface IParsedFrameInfo {
    frames: ImageData[];
    delays: number[];
    parsedFrames: ParsedFrame[];
}
export declare class Decoder {
    private url;
    private parseGIF;
    constructor(url: string);
    decode(): Promise<ParsedGif>;
    decompressFrames(): Promise<IParsedFrameInfo>;
    /**
     * Validates and fixes frames that have lost pixels.
     * @param gif
     */
    private validateAndFixFrame;
    /**
     * Generates ImageData objects from parsed frames.
     * @param frames
     */
    private generate2ImageData;
    /**
     * Generates ImageData objects from frames with modified pixels.
     * @param frames
     */
    private generate2ImageDataWithPixelsModified;
    /**
     * @param {string} url
     * @returns
     */
    private fetchImageData;
    private handlePixels;
    private putPixels;
}