export declare class Blob {
    readonly buffers: ArrayBuffer[];
    readonly type: string | {
        type: string;
    };
    /**
     *
     * @param buffers only support zero index
     * @param type mimetype image/png image/webp...
     */
    constructor(buffers: ArrayBuffer[], type: string | {
        type: string;
    });
    arraybuffer(): Promise<ArrayBuffer>;
    stream(): void;
    text(): void;
    slice(start?: number, end?: number, contentType?: string): void;
}