streetmerchant/src/notification/sound.ts

import playerLib, {PlaySound} from 'play-sound';
import {config} from '../config';
import fs from 'fs';
import {logger} from '../logger';

let player: PlaySound;

if (config.notifications.playSound) {
  player = config.notifications.soundPlayer
    ? playerLib({players: [config.notifications.soundPlayer]})
    : playerLib();

  if (player.player === null) {
    logger.warn("✖ couldn't find sound player");
  } else {
    const playerName = player.player;
    logger.info(`✔ sound player found: ${playerName}`);
  }
}

export function playSound() {
  if (config.notifications.playSound && player.player !== null) {
    logger.debug('↗ playing sound');

    fs.access(config.notifications.playSound, fs.constants.F_OK, error => {
      if (error) {
        logger.error(`✖ error opening sound file: ${error.message}`);
        return;
      }

      player.play(config.notifications.playSound, (error: Error) => {
        if (error) {
          logger.error("✖ couldn't play sound", error);
        }

        logger.info('✔ played sound');
      });
    });
  }
}