export interface ISpi {
    write(buffer: Buffer, callback: (error: any, data: any) => void): void;
}
export interface IDotstarOptions {
    length?: number;
}
export declare class Dotstar {
    static defaultOptions: IDotstarOptions;
    static startBytesLength: number;
    static endBytesLength: number;
    static bytesPerLed: number;
    device: ISpi;
    length: number;
    ledBuffer: Buffer;
    colorBuffer: Buffer;
    offBuffer: Buffer;
    constructor(spi: ISpi, options?: IDotstarOptions);
    /**
     * Set every LED in the colorBuffer to the RGBA value.
     */
    all(r: number, g: number, b: number, a?: number): void;
    /**
     * Set every LED in the colorBuffer to black/off.
     */
    clear(): void;
    /**
     * Turn off every LED without having to update the color buffer.
     * This is slightly faster and useful when you want to resume with the previous color.
     */
    off(): void;
    /**
     * Set a specific LED in the colorBuffer to RGBA value.
     */
    set(led: number, r: number, g: number, b: number, a?: number): void;
    /**
     * Update DotStar LED strip with current data in led buffer.
     */
    sync(): void;
    /**
     * Convert RGBA value to Buffer
     */
    private convertRgbaToLedBuffer(r, g, b, a?);
    /**
     * Wrapper around device.write which rethrows errors
     */
    private write(buffer);
}