export declare class WxImageReader {
    static images: {
        [path: string]: WechatMiniprogram.Image;
    };
    static sharedCanvas: WechatMiniprogram.Canvas;
    static preload(path: string): Promise<WechatMiniprogram.Image>;
    type: number;
    path: string;
    imageEl: WechatMiniprogram.Image;
    canvas: WechatMiniprogram.Canvas;
    width: number;
    height: number;
    contentTime: number;
    renderRequest: boolean;
    released: boolean;
    private lastSampleData;
    private constructor();
    readSample(): {
        bytes: number;
        length: number;
        width: number;
        height: number;
    };
    freeBuffer(): void;
    release(): void;
}