@stealify/connect-nfc-pcsc/src/NFC.mjs

Easy reading and writing NFC tags and cards

import pcsclite from '@pokusew/pcsclite';
import EventEmitter from 'events';
import Reader from './Reader';
import ACR122Reader from './ACR122Reader';

class NFC extends EventEmitter {

  constructor(logger) {
    super();

    this.pcsc = pcsclite();

    if (logger) {
      this.logger = logger;
    }
    else {
      this.logger = {
        log: function () {
        },
        debug: function () {
        },
        info: function () {
        },
        warn: function () {
        },
        error: function () {
        }
      };
    }

    this.pcsc.on('reader', (reader) => {

      this.logger.info('New reader detected', reader.name);

      // create special object for ARC122U reader with commands specific to this reader
      if (reader.name.toLowerCase().indexOf('acr122') !== -1) {

        const device = new ACR122Reader(reader, this.logger);

        this.emit('reader', device);

        return;

      }

      const device = new Reader(reader, this.logger);

      this.emit('reader', device);

    });

    this.pcsc.on('error', (err) => {

      this.logger.info('PCSC error', err.message);

      this.emit('error', err);

    });

  }

  close() {

    this.pcsc.close();

  }

}

export default NFC;