import SerialPort from '@signageos/front-applet/es6/FrontApplet/Hardware/SerialPort';
/**
 * Wraps raw serial port instance and buffers received data until CRLF is received and then emits entire data chunks delimited by CRLF
 *
 * Serial port doesn't emit data in some logical order. It's a pure stream of data, where some logical piece of data might come in
 * one chunk, 2 chunks or even 2 consecutive logical pieces of data could come in a single chunk.
 *
 * This class buffers that data and looks for CRLF characters and treats those as delimiters between logical pieces of data.
 *
 * For example, sender sends these messages over the serial port:
 *
 * AAA\r\n
 * BBB\r\n
 * CCC\r\n
 *
 * But the way they're emitted by the serial port might look like this:
 *
 * AA
 * A\r
 * \nBBB\r\nCC
 * C\r\n
 *
 * This class buffers the first 2 chunks and doesn't emit any events.
 * When the third chunk is received, it finally emits "AAA" (CRLF delimiter is discarded),
 * then it also emits "BBB" and buffers "CC".
 * When the final chunk is received, it emits "CCC".
 */
export default class SerialPortReadlineParser {
    private serialPort;
    private eventEmitter;
    private dataBuffer;
    constructor(serialPort: SerialPort);
    onData(listener: (data: string) => void): void;
    private bindEvents;
    private handleData;
    private convertDataToString;
}