// Import module.
const AudioRecorder = require('node-audiorecorder');

// Options is an optional parameter for the constructor call.
// If an option is not given the default value, as seen below, will be used.
const options = {
  program: `rec`,     // Which program to use, either `arecord`, `rec`, or `sox`.
  device: null,       // Recording device to use, e.g. `hw:1,0`

  bits: 16,           // Sample size. (only for `rec` and `sox`)
  channels: 1,        // Channel count.
  encoding: `signed-integer`,  // Encoding type. (only for `rec` and `sox`)
  format: `S16_LE`,   // Encoding type. (only for `arecord`)
  rate: 16000,        // Sample rate.
  type: `wav`,        // Format type.

  // Following options only available when using `rec` or `sox`.
  silence: 2,         // Duration of silence in seconds before it stops recording.
  thresholdStart: 0.5,  // Silence threshold to start recording.
  thresholdStop: 0.5,   // Silence threshold to stop recording.
  keepSilence: true   // Keep the silence in the recording.
};
// Optional parameter intended for debugging.
// The object has to implement a log and warn function.
const logger = console;

// Create an instance.
let audioRecorder = new AudioRecorder(options, logger);

// Creates and starts the recording process.
audioRecorder.start();
// Stops and removes the recording process.
audioRecorder.stop();
// Returns the stream of the recording process.
audioRecorder.stream();