react-native-audio-api/src/core/GainNode.ts

react-native-audio-api provides system for controlling audio in React Native environment compatible with Web Audio API specification

import { IGainNode } from '../interfaces';
import AudioNode from './AudioNode';
import AudioParam from './AudioParam';
import BaseAudioContext from './BaseAudioContext';

export default class GainNode extends AudioNode {
  readonly gain: AudioParam;

  constructor(context: BaseAudioContext, gain: IGainNode) {
    super(context, gain);
    this.gain = new AudioParam(gain.gain, context);
  }
}