react-native-audio-api/lib/module/AudioAPIModule/AudioAPIModule.js

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

"use strict";

import { NativeAudioAPIModule } from "../specs/index.js";

// Hint: Copied from react-native-worklets
// Doesn't really matter what is inside, just need a unique type

class AudioAPIModule {
  #workletsModule_ = null;
  #canUseWorklets_ = false;
  #workletsVersion = 'unknown';
  #workletsAvailable_ = false;
  supportedWorkletsVersion = ['0.6.0', '0.6.1'];
  constructor() {
    // Important! Verify and import worklets first
    // otherwise the native module installation might crash
    // if react-native-worklets is not imported before audio-api
    this.#verifyWorklets();
    if (this.#verifyInstallation()) {
      return;
    }
    if (!NativeAudioAPIModule) {
      throw new Error(`Failed to install react-native-audio-api: The native module could not be found.`);
    }
    NativeAudioAPIModule.install();
  }
  #verifyWorklets() {
    try {
      const workletsPackage = require('react-native-worklets');
      const workletsPackageJson = require('react-native-worklets/package.json');
      this.#workletsVersion = workletsPackageJson.version;
      this.#workletsAvailable_ = true;
      this.#canUseWorklets_ = this.supportedWorkletsVersion.includes(workletsPackageJson.version);
      if (this.#canUseWorklets_) {
        this.#workletsModule_ = workletsPackage;
      }
      return this.#canUseWorklets_;
    } catch {
      this.#canUseWorklets_ = false;
      return false;
    }
  }
  #verifyInstallation() {
    return global.createAudioContext != null && global.createOfflineAudioContext != null && global.createAudioRecorder != null && global.createAudioDecoder != null && global.createAudioStretcher != null && global.AudioEventEmitter != null;
  }
  get workletsModule() {
    return this.#workletsModule_;
  }

  /**
   * Indicates whether react-native-worklets are installed in matching version,
   * for usage with react-native-audio-api.
   */
  get canUseWorklets() {
    return this.#canUseWorklets_;
  }

  /** Returns the installed worklets version or 'unknown'. */
  get workletsVersion() {
    return this.#workletsVersion;
  }

  /**
   * Indicates whether react-native-worklets are installed, regardless of
   * version support. Useful for asserting compatibility.
   */
  get areWorkletsAvailable() {
    return this.#workletsAvailable_;
  }

  /**
   * Indicates whether the installed react-native-worklets version is supported.
   * Useful for asserting compatibility.
   */
  get isWorkletsVersionSupported() {
    // Note: if areWorkletsAvailable is true, canUseWorklets is equivalent to version check
    return this.#canUseWorklets_;
  }
  createAudioRuntime() {
    if (!this.#canUseWorklets_) {
      return null;
    }
    return this.#workletsModule_.createWorkletRuntime('AudioWorkletRuntime');
  }
}
export default new AudioAPIModule();
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