react-native-audio-api/lib/module/core/OscillatorNode.js

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

"use strict";

import AudioScheduledSourceNode from "./AudioScheduledSourceNode.js";
import AudioParam from "./AudioParam.js";
import { InvalidStateError } from "../errors/index.js";
export default class OscillatorNode extends AudioScheduledSourceNode {
  constructor(context, options) {
    if (options?.periodicWave) {
      options.type = 'custom';
    }
    const node = context.context.createOscillator(options || {});
    super(context, node);
    this.frequency = new AudioParam(node.frequency, context);
    this.detune = new AudioParam(node.detune, context);
    this.type = node.type;
  }
  get type() {
    return this.node.type;
  }
  set type(value) {
    if (value === 'custom') {
      throw new InvalidStateError("'type' cannot be set directly to 'custom'.  Use setPeriodicWave() to create a custom Oscillator type.");
    }
    this.node.type = value;
  }
  setPeriodicWave(wave) {
    this.node.setPeriodicWave(wave.periodicWave);
  }
}
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