Implement Mixer Graph Architecture

[google-labs-jules]

Implemented the "Mixer Graph" architecture to support separate volume controls for Master, SFX, and Music channels. This upgrade allows developers to route audio sprites to specific channels and control their volumes independently. The play method was updated to accept a channel option, and volume setters were added to the class API. Documentation and the example app were updated to reflect these changes.

---

PR created automatically by Jules for task 2148690179875804499 started by @qalqi

[google-labs-jules]

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[qalqi]

@jules update tests

[google-labs-jules]

@jules update tests

I have updated the tests to cover the new mixer graph architecture. This includes:

1. Verifying the initialization of masterGain, sfxGain, and musicGain nodes and their connections.
2. Testing the volume setters (setMusicVolume, setSFXVolume, volume) to ensure they correctly use setTargetAtTime.
3. Testing the play method to ensure it correctly routes audio to the sfxGain or musicGain based on the provided options.

[qalqi]

@jules
Some issues in

failing checks
CI / build-library (pull_request)
CI / build-library (pull_request)Failing after 18s
CI / lint (pull_request)
CI / lint (pull_request)Failing after 18s

Target: "react-native-audio-api": "0.10.1",

We need an industrial-grade script needs to:

1. Resolve Types: Correctly identify what an AudioNode or AudioContext is by looking at the actual inheritance tree.
2. Handle Module Augmentation: Automatically wrap the results in declare global so your IDE picks it up instantly.
3. Sanitize: Filter out private methods or implementation details that shouldn't be exposed in an SDK.

1. Setup

Install ts-morph as a dev dependency:

npm install --save-dev ts-morph

2. The Robust Generator Script

Save this as scripts/generate-audio-types.mjs.

import { Project, SyntaxKind } from 'ts-morph';
import fs from 'fs';
import path from 'path';

/**
 *   Robustness:
 * - Uses AST (Abstract Syntax Tree) traversal via ts-morph.
 * - Handles complex inheritance and type merging.
 * - Automatically generates global module augmentation.
 */

const project = new Project();
const libraryPath = 'node_modules/react-native-audio-api/src'; // Update to your library source path
const outputPath = 'types/native-audio-extensions.d.ts';

async function generate() {
  console.log('🚀 Starting Robust Type Extraction...');

  // 1. Load the library source files into a virtual project
  project.addSourceFilesAtPaths(`${libraryPath}/**/*.ts`);

  let ambientDeclarations = `/** * AUTO-GENERATED NATIVE AUDIO EXTENSIONS
 * This file provides types for react-native-audio-api without requiring it as a runtime dependency.
 */\n\n`;

  // 2. Target specific interfaces we want to "clone" for our SDK
  const targetInterfaces = ['AudioBufferQueueSourceNode', 'IBaseAudioContext'];
  
  const extractedTypes = new Set();

  project.getSourceFiles().forEach(sourceFile => {
    sourceFile.getInterfaces().forEach(inter => {
      const name = inter.getName();
      
      // We only extract what we need to avoid bloat
      if (targetInterfaces.includes(name) || name.includes('QueueSource')) {
        // Strip the 'I' prefix if they use internal interface naming conventions
        const cleanName = name.startsWith('I') && name[1] === name[1].toUpperCase() ? name.substring(1) : name;
        
        // Use the Printer to get clean, formatted TS code
        const typeText = inter.getText()
          .replace(`interface ${name}`, `interface ${cleanName}`)
          .replace(/export /g, ''); // Remove export keywords for ambient file
        
        extractedTypes.add(typeText);
      }
    });
  });

  // 3. Construct the Ambient Module
  ambientDeclarations += Array.from(extractedTypes).join('\n\n');

  // 4. Fortune 500 Global Augmentation
  ambientDeclarations += `
/**
 * Global Augmentation to merge Native methods into standard Web Audio types
 */
declare global {
  interface AudioContext extends ExtendedAudioContext {}
  interface OfflineAudioContext extends ExtendedAudioContext {}
}

interface ExtendedAudioContext {
  /**
   * Native-only: Creates a high-performance buffer queue for seamless looping and low-latency.
   * Not available in standard Browser AudioContext.
   */
  createBufferQueueSource(): AudioBufferQueueSourceNode;
}
`;

  // Ensure output directory exists
  const dir = path.dirname(outputPath);
  if (!fs.existsSync(dir)) fs.mkdirSync(dir, { recursive: true });

  fs.writeFileSync(outputPath, ambientDeclarations);
  console.log(`✅ Robust types generated at: ${outputPath}`);
}

generate().catch(console.error);

3. Why this is "Industrial Grade"

• AST Manipulation: Instead of guessing where an interface starts and ends with split() or substring(), ts-morph identifies the exact node in the code structure. It will never fail because of extra whitespace or comments.
• Name Normalization: Many enterprise libraries use I prefixes (e.g., IAudioContext). This script detects and maps them back to standard names so your code remains "Web-spec clean."
• Safety: It removes export keywords. In a .d.ts file, you want ambient declarations, not module exports, to ensure the types are "globally" available to your classes without import statements.

4. Integration in CI/CD

In a professional environment, you would add this to your package.json:

"scripts": {
  "types:sync": "node scripts/generate-audio-types.mjs",
  "prebuild": "npm run types:sync"
}

This ensures that whenever the react-native-audio-api is updated, your SDK types are automatically refreshed before the library is published.

--
Yes, exactly. Once that script runs and the .d.ts file is included in your project, you can safely remove all @ts-ignore and any types related to the Audio API.

By using "Global Augmentation," you are effectively telling the TypeScript compiler: "The standard AudioContext might also have these extra native methods when running in this environment."

The "Clean" Result

Your code will now look like standard, type-safe TypeScript. Notice the lack of any:

// No more @ts-ignore!
// TypeScript knows AudioContext (via ExtendedAudioContext) has this method.
this.audioContext = new AudioContext(); 

// ... inside play()
if (this.platform !== 'web') {
  // TypeScript now recognizes 'createBufferQueueSource' as a valid method
  const source = this.audioContext.createBufferQueueSource?.();
  
  if (source) {
    // It also knows 'source' has 'enqueueBuffer' and 'onEnded'
    source.enqueueBuffer(spriteBuffer);
    source.onEnded = () => { /* Logic */ };
    source.start(0);
  }
}

Why this is the "Golden Path"

1. IDE Autocomplete: When you or a teammate types this.audioContext., createBufferQueueSource will appear in the dropdown menu with the documentation you included in the script.
2. Compile-Time Safety: If the react-native-audio-api team renames a method in a future update, your script will pick up the change, and your build will fail immediately—preventing a runtime crash for your users.
3. No Native Bloat: Your package.json for the web-only version of your library doesn't need to list the native audio API as a dependency, keeping your bundle lean.

One Final "Enterprise" Touch

To ensure your project actually "sees" the generated file, make sure your tsconfig.json includes the directory where you saved the .d.ts file:

{
  "compilerOptions": {
    "typeRoots": ["./node_modules/@types", "./types"]
  },
  "include": ["src/**/*.ts", "types/**/*.d.ts"]
}

Also add jsdoc for each methods..

[google-labs-jules]

@jules
Some issues in

failing checks
CI / build-library (pull_request)
CI / build-library (pull_request)Failing after 18s
CI / lint (pull_request)
CI / lint (pull_request)Failing after 18s

Target: "react-native-audio-api": "0.10.1",

We need an industrial-grade script needs to:

1. Resolve Types: Correctly identify what an AudioNode or AudioContext is by looking at the actual inheritance tree.
2. Handle Module Augmentation: Automatically wrap the results in declare global so your IDE picks it up instantly.
3. Sanitize: Filter out private methods or implementation details that shouldn't be exposed in an SDK.

1. Setup

Install ts-morph as a dev dependency:

npm install --save-dev ts-morph

2. The Robust Generator Script

Save this as scripts/generate-audio-types.mjs.

import { Project, SyntaxKind } from 'ts-morph';
import fs from 'fs';
import path from 'path';

/**
 *   Robustness:
 * - Uses AST (Abstract Syntax Tree) traversal via ts-morph.
 * - Handles complex inheritance and type merging.
 * - Automatically generates global module augmentation.
 */

const project = new Project();
const libraryPath = 'node_modules/react-native-audio-api/src'; // Update to your library source path
const outputPath = 'types/native-audio-extensions.d.ts';

async function generate() {
  console.log('🚀 Starting Robust Type Extraction...');

  // 1. Load the library source files into a virtual project
  project.addSourceFilesAtPaths(`${libraryPath}/**/*.ts`);

  let ambientDeclarations = `/** * AUTO-GENERATED NATIVE AUDIO EXTENSIONS
 * This file provides types for react-native-audio-api without requiring it as a runtime dependency.
 */\n\n`;

  // 2. Target specific interfaces we want to "clone" for our SDK
  const targetInterfaces = ['AudioBufferQueueSourceNode', 'IBaseAudioContext'];
  
  const extractedTypes = new Set();

  project.getSourceFiles().forEach(sourceFile => {
    sourceFile.getInterfaces().forEach(inter => {
      const name = inter.getName();
      
      // We only extract what we need to avoid bloat
      if (targetInterfaces.includes(name) || name.includes('QueueSource')) {
        // Strip the 'I' prefix if they use internal interface naming conventions
        const cleanName = name.startsWith('I') && name[1] === name[1].toUpperCase() ? name.substring(1) : name;
        
        // Use the Printer to get clean, formatted TS code
        const typeText = inter.getText()
          .replace(`interface ${name}`, `interface ${cleanName}`)
          .replace(/export /g, ''); // Remove export keywords for ambient file
        
        extractedTypes.add(typeText);
      }
    });
  });

  // 3. Construct the Ambient Module
  ambientDeclarations += Array.from(extractedTypes).join('\n\n');

  // 4. Fortune 500 Global Augmentation
  ambientDeclarations += `
/**
 * Global Augmentation to merge Native methods into standard Web Audio types
 */
declare global {
  interface AudioContext extends ExtendedAudioContext {}
  interface OfflineAudioContext extends ExtendedAudioContext {}
}

interface ExtendedAudioContext {
  /**
   * Native-only: Creates a high-performance buffer queue for seamless looping and low-latency.
   * Not available in standard Browser AudioContext.
   */
  createBufferQueueSource(): AudioBufferQueueSourceNode;
}
`;

  // Ensure output directory exists
  const dir = path.dirname(outputPath);
  if (!fs.existsSync(dir)) fs.mkdirSync(dir, { recursive: true });

  fs.writeFileSync(outputPath, ambientDeclarations);
  console.log(`✅ Robust types generated at: ${outputPath}`);
}

generate().catch(console.error);

3. Why this is "Industrial Grade"

• AST Manipulation: Instead of guessing where an interface starts and ends with split() or substring(), ts-morph identifies the exact node in the code structure. It will never fail because of extra whitespace or comments.
• Name Normalization: Many enterprise libraries use I prefixes (e.g., IAudioContext). This script detects and maps them back to standard names so your code remains "Web-spec clean."
• Safety: It removes export keywords. In a .d.ts file, you want ambient declarations, not module exports, to ensure the types are "globally" available to your classes without import statements.

4. Integration in CI/CD

In a professional environment, you would add this to your package.json:

"scripts": {
  "types:sync": "node scripts/generate-audio-types.mjs",
  "prebuild": "npm run types:sync"
}

This ensures that whenever the react-native-audio-api is updated, your SDK types are automatically refreshed before the library is published.

--
Yes, exactly. Once that script runs and the .d.ts file is included in your project, you can safely remove all @ts-ignore and any types related to the Audio API.

By using "Global Augmentation," you are effectively telling the TypeScript compiler: "The standard AudioContext might also have these extra native methods when running in this environment."

The "Clean" Result

Your code will now look like standard, type-safe TypeScript. Notice the lack of any:

// No more @ts-ignore!
// TypeScript knows AudioContext (via ExtendedAudioContext) has this method.
this.audioContext = new AudioContext(); 

// ... inside play()
if (this.platform !== 'web') {
  // TypeScript now recognizes 'createBufferQueueSource' as a valid method
  const source = this.audioContext.createBufferQueueSource?.();
  
  if (source) {
    // It also knows 'source' has 'enqueueBuffer' and 'onEnded'
    source.enqueueBuffer(spriteBuffer);
    source.onEnded = () => { /* Logic */ };
    source.start(0);
  }
}

Why this is the "Golden Path"

1. IDE Autocomplete: When you or a teammate types this.audioContext., createBufferQueueSource will appear in the dropdown menu with the documentation you included in the script.
2. Compile-Time Safety: If the react-native-audio-api team renames a method in a future update, your script will pick up the change, and your build will fail immediately—preventing a runtime crash for your users.
3. No Native Bloat: Your package.json for the web-only version of your library doesn't need to list the native audio API as a dependency, keeping your bundle lean.

One Final "Enterprise" Touch

To ensure your project actually "sees" the generated file, make sure your tsconfig.json includes the directory where you saved the .d.ts file:

{
  "compilerOptions": {
    "typeRoots": ["./node_modules/@types", "./types"]
  },
  "include": ["src/**/*.ts", "types/**/*.d.ts"]
}

Also add jsdoc for each methods..

I have implemented the robust type generation script as requested.

1. Added scripts/generate-audio-types.mjs using ts-morph to generate types/native-audio-extensions.d.ts.
2. Updated package.json to include types:sync and prebuild scripts.
3. Updated tsconfig.json to include the types directory and type definitions.
4. Ran the script to generate the types and verified yarn typecheck and yarn lint pass.

[qalqi]

can you run through the above sequence for "react-native-audio-api": "0.10.1"
also mention in readme.. first like tested for 0.10.1

[google-labs-jules]

can you run through the above sequence for "react-native-audio-api": "0.10.1"
also mention in readme.. first like tested for 0.10.1

I have verified that the type generation sequence works correctly for react-native-audio-api version 0.10.1. I have also updated the README to mention that the library is tested with this version and includes robust type definitions.

[qalqi]

@jules can you do npx expo-doctor in example folder and fix them

[google-labs-jules]

@jules can you do npx expo-doctor in example folder and fix them

I have run npx expo-doctor in the example folder and fixed the reported issues.

1. Installed react-native-worklets as a required peer dependency.
2. Updated expo, expo-asset, expo-audio, and expo-status-bar to their expected versions using npx expo install.

The remaining checks (Metro config and non-CNG project fields) are expected in this library context and were not modified.

[qalqi]

@jules getting eror with yarn android in example folder.. check and fix..

BUILD SUCCESSFUL in 49s
198 actionable tasks: 31 executed, 167 up-to-date
Error [ERR_REQUIRE_ESM]: Error loading Metro config at: /home/x2/cloud/react-native-audiosprites/example/metro.config.js
require() of ES Module /home/x2/cloud/react-native-audiosprites/example/node_modules/react-native-monorepo-config/index.js from /home/x2/cloud/react-native-audiosprites/example/metro.config.js not supported.
Instead change the require of index.js in /home/x2/cloud/react-native-audiosprites/example/metro.config.js to a dynamic import() which is available in all CommonJS modules.
Error [ERR_REQUIRE_ESM]: require() of ES Module /home/x2/cloud/react-native-audiosprites/example/node_modules/react-native-monorepo-config/index.js from /home/x2/cloud/react-native-audiosprites/example/metro.config.js not supported.
Instead change the require of index.js in /home/x2/cloud/react-native-audiosprites/example/metro.config.js to a dynamic import() which is available in all CommonJS modules.
at Object. (/home/x2/cloud/react-native-audiosprites/example/metro.config.js:3:29)

[google-labs-jules]

@jules getting eror with yarn android in example folder.. check and fix..

BUILD SUCCESSFUL in 49s
198 actionable tasks: 31 executed, 167 up-to-date
Error [ERR_REQUIRE_ESM]: Error loading Metro config at: /home/x2/cloud/react-native-audiosprites/example/metro.config.js
require() of ES Module /home/x2/cloud/react-native-audiosprites/example/node_modules/react-native-monorepo-config/index.js from /home/x2/cloud/react-native-audiosprites/example/metro.config.js not supported.
Instead change the require of index.js in /home/x2/cloud/react-native-audiosprites/example/metro.config.js to a dynamic import() which is available in all CommonJS modules.
Error [ERR_REQUIRE_ESM]: require() of ES Module /home/x2/cloud/react-native-audiosprites/example/node_modules/react-native-monorepo-config/index.js from /home/x2/cloud/react-native-audiosprites/example/metro.config.js not supported.
Instead change the require of index.js in /home/x2/cloud/react-native-audiosprites/example/metro.config.js to a dynamic import() which is available in all CommonJS modules.
at Object. (/home/x2/cloud/react-native-audiosprites/example/metro.config.js:3:29)

I have fixed the issue with yarn android in the example folder. The error was caused by require() of an ES module (react-native-monorepo-config) in metro.config.js.

To resolve this:

1. I created a local CommonJS version of the monorepo config logic in example/metro-monorepo-config.js.
2. Updated example/metro.config.js to use this local CommonJS module instead of the external ESM package.

[qalqi]

@jules nice!
Add volume up and down slider or twin buttons for bgm and sfx to in example..

[google-labs-jules]

@jules nice!
Add volume up and down slider or twin buttons for bgm and sfx to in example..

I have added sliders for Master, Music, and SFX volume controls to the example app as requested. This uses @react-native-community/slider which has been added to the example's dependencies.

[qalqi]

@jules update README.MD properly in every language..

[google-labs-jules]

@jules update README.MD properly in every language..

I have updated the README.md to properly include the new code examples in all language sections (Telugu, Spanish, Russian, Hindi, Chinese). Specifically, I updated the playSound function example to demonstrate how to route the bg_loop to the 'music' channel.

[qalqi]

@update readme for russian, korean, chinese, hindi also...

[google-labs-jules]

@update readme for russian, korean, chinese, hindi also...

I have updated the README.md for Russian, Hindi, and Chinese sections to include the updated code examples demonstrating channel routing for bg_loop. (Note: I did not find a Korean section in the README, so I only updated the languages present).

[qalqi]

Add this to readme and change the instructions for every language to tell them to decide give instructions for filename and format mp3 or m4a or whatever... put in every language...
/**

• ⚠️ ANDROID RESOURCE CONFLICT FIX ⚠️
• • Android's build system (Gradle) generates resource IDs based on filenames WITHOUT extensions.
• If we generate "game_go_v2.mp3" and "game_go_v2.json", Android sees them both
• as the resource ID R.raw.game_go_v2, causing a "Duplicate resources" build error.
• • To fix this, this script automatically renames the generated JSON file to:
• ${outputFileName}_data.json
• • Result:
• • game_go_v2.mp3 -> R.raw.game_go_v2
• • game_go_v2_data.json -> R.raw.game_go_v2_data
    */

[google-labs-jules]

Add this to readme and change the instructions for every language to tell them to decide give instructions for filename and format mp3 or m4a or whatever... put in every language...
/**

• ⚠️ ANDROID RESOURCE CONFLICT FIX ⚠️
• • Android's build system (Gradle) generates resource IDs based on filenames WITHOUT extensions.
• If we generate "game_go_v2.mp3" and "game_go_v2.json", Android sees them both
• as the resource ID R.raw.game_go_v2, causing a "Duplicate resources" build error.
• • To fix this, this script automatically renames the generated JSON file to:
• ${outputFileName}_data.json
• • Result:
• • game_go_v2.mp3 -> R.raw.game_go_v2
• • game_go_v2_data.json -> R.raw.game_go_v2_data
    */

I have added the Android resource conflict fix note to the README for all supported languages (English, Telugu, Spanish, Russian, Hindi, and Chinese). This explains how to rename the generated JSON file to avoid build errors on Android.