doc, meta: add troubleshooting guide

TROUBLESHOOTING.md

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+# Troubleshooting Node.js
+
+### 1. Verify Node.js Installation:
+
+* **Problem**: Node.js might not be installed or configured correctly.
+* **Solution**:
+  * Check if Node.js is installed by running `node -v` in your terminal.
+  * If not installed, download and install Node.js from the
+    [official website][].
+  * Ensure that the installation directory is included in your system's PATH.
+
+### 2. Check Package Dependencies:
+
+* **Problem**: Missing or outdated dependencies can cause issues.
+* **Solution**:
+  * Navigate to your project directory and run `npm install` to install
+    dependencies defined in `package.json`.
+  * Check for any errors during the installation process.
+
+### 3. Debugging JavaScript Code:
+
+* **Problem**: Unexpected behavior or errors in your JavaScript code.
+* **Solution**:
+  * Use `console.log()` statements to debug your code and trace the flow.
+  * Utilize Node.js debugger by running your script with
+    [`node inspect` or `node --inspect`][`--inspect`].
+  * Consider using a debugger like [VSCode][] or [Chrome DevTools][] for more
+    advanced debugging.
+
+### 4. Handling Errors:
+
+* **Problem**: Uncaught exceptions or errors in Node.js applications.
+* **Solution**:
+  * Implement error handling using try-catch blocks or `.catch()` method
+    for promises.
+  * Use event listeners for unhandled exceptions and rejections
+    (`process.on('uncaughtException')` and `process.on('unhandledRejection')`) to
+    log errors and gracefully shut down the application.
+
+### 5. Memory Leaks and Performance Issues:
+
+* **Problem**: Memory leaks or poor performance leading to high memory usage
+  or slow response times.
+* **Solution**:
+  * Use Node.js built-in tools like [`--inspect`][] or [`--prof`][] to
+    analyze memory usage and performance.
+  * Profile your application using tools to identify memory leaks and
+    performance bottlenecks.
+  * Optimize code by minimizing synchronous operations, using streams for
+    large data, and implementing caching where applicable.
+
+### 6. Network Issues:
+
+* **Problem**: Issues related to network connectivity or HTTP requests.
+* **Solution**:
+  * Check network configurations and firewall settings.
+  * Ensure that the correct URLs and ports are used in your application.
+  * Handle timeouts and retries for network requests to prevent hanging.
+
+### 7. Deployment and Environment Issues:
+
+* **Problem**: Differences between development and production environments.
+* **Solution**:
+  * Ensure that environment variables are correctly set, especially for
+    sensitive data.
+  * Use tools like [dotenv][] to manage environment-specific configurations.
+  * Verify that production dependencies are properly installed and up-to-date.
+
+### 8. Module Loading and Paths:
+
+* **Problem**: Issues with module loading or incorrect file paths.
+* **Solution**:
+  * Verify that required modules are installed and accessible.
+  * Check for relative paths and ensure they are correct.
+  * Consider using [`require.resolve()`][] to troubleshoot module loading
+    issues.
+
+### 9. Version Conflicts and Compatibility:
+
+* **Problem**: Dependency version conflicts or compatibility issues.
+* **Solution**:
+  * Review dependency versions in `package.json` and ensure compatibility.
+  * Use [`npm audit`][] to check for security vulnerabilities and outdated
+    dependencies.
+  * Consider using npm's [`npm ci`][] command to install dependencies from
+    `package-lock.json` for consistent installs.
+
+### 10. Monitoring and Logging:
+
+* **Problem**: Insufficient visibility into application behavior.
+* **Solution**:
+  * Implement logging using libraries to track application activity and errors.
+  * Use monitoring tools to monitor application performance and health.
+  * Set up alerts for critical errors or performance degradation.
+
+### 11. Security Vulnerabilities:
+
+* **Problem**: Vulnerabilities in dependencies or insecure coding practices.
+* **Solution**:
+  * Regularly update dependencies to patch security vulnerabilities.
+  * Use security scanning tools like [`npm audit`][] to identify and fix
+    vulnerabilities.
+  * Follow security best practices such as input validation, proper
+    authentication, and secure data handling.
+
+### 12. System Resources and Limits:
+
+* **Problem**: Node.js processes consuming too much CPU, memory, or other
+  resources.
+* **Solution**:
+  * Monitor system resources using tools like `top`, `htop`, or your OS's
+    built-in resource monitor.
+  * Adjust Node.js process settings such as maximum memory usage
+    (`--max-old-space-size`) or CPU affinity if necessary.
+  * Consider load balancing and scaling your application to distribute
+    resources effectively.
+
+### 13. Third-Party Modules and Native Add-ons:
+
+* **Problem**: Issues with third-party modules or native add-ons.
+* **Solution**:
+  * Ensure that native dependencies are compatible with your platform and
+    architecture.
+  * Check documentation and community support for known issues and workarounds.
+  * Consider alternative modules or implementations if the problem persists.
+
+### 14. Node.js Version Compatibility:
+
+* **Problem**: Incompatibility between your Node.js version and dependencies.
+* **Solution**:
+  * Ensure that your dependencies support your Node.js version.
+  * Use version managers like [nvm][] or [n][] to manage multiple Node.js
+    installations.
+  * Consider upgrading or downgrading Node.js version if necessary.
+
+### 15. Community Resources and Documentation:
+
+* **Problem**: Difficulty in troubleshooting specific issues.
+* **Solution**:
+  * Search online resources like [StackOverflow][], [GitHub issues][],
+    or [Node.js Discussions][] for similar problems and solutions.
+  * Consult official Node.js documentation, including the [API reference][]
+    and [guides][].
+  * Engage with the Node.js community through forums, chat rooms, or social
+    media for assistance.
+
+### 16. Performance Optimization:
+
+* **Problem**: Slow application performance or high response times.
+* **Solution**:
+  * Profile your application using tools like [`--prof`][] to identify performance
+    bottlenecks.
+  * Optimize critical code paths by reducing unnecessary operations and
+    improving algorithms.
+  * Use caching, asynchronous I/O, and concurrency to improve scalability and
+    responsiveness.
+
+### 17. Testing and Continuous Integration:
+
+* **Problem**: Undetected issues due to lack of automated testing or CI/CD
+  pipelines.
+* **Solution**:
+  * Implement unit tests, integration tests, and end-to-end tests to catch bugs
+    and regressions early.
+  * Use CI/CD pipelines to automate testing, building, and deployment processes.
+  * Utilize toos (Like the `node:test` module) for testing Node.js applications.
+
+### 18. Containerization and Orchestration:
+
+* **Problem**: Issues with containerized Node.js applications or orchestration
+  platforms.
+* **Solution**:
+  * Ensure that Docker images are properly configured with necessary
+    dependencies and environment variables.
+  * Use orchestration tools for managing containerized applications.
+  * Monitor containerized applications for resource usage, performance, and
+    health.
+
+### 19. File System and Permissions:
+
+* **Problem**: File system-related issues such as file permissions or file not
+  found errors.
+* **Solution**:
+  * Check file permissions to ensure that Node.js has appropriate access to
+    read and write files.
+  * Verify file paths and ensure that files/directories exist where expected.
+  * Use appropriate file system APIs and handle errors gracefully.
+
+### 20. Scalability and Load Balancing:
+
+* **Problem**: Node.js application struggles to handle high traffic or load.
+* **Solution**:
+  * Scale your application horizontally by running multiple instances behind
+    a load balancer.
+  * Implement clustering to manage multiple Node.js processes.
+  * Monitor performance and adjust resources dynamically to handle varying
+    loads.
+
+[API reference]: https://nodejs.org/api/
+[Chrome DevTools]: https://developers.google.com/web/tools/chrome-devtools
+[GitHub Issues]: https://github.com/nodejs/node/issues
+[Node.js Discussions]: https://github.com/nodejs/node/discussions
+[StackOverflow]: https://stackoverflow.com/
+[VSCode]: https://code.visualstudio.com/docs/nodejs/nodejs-debugging/
+[`--inspect`]: https://nodejs.org/en/docs/guides/debugging-getting-started/
+[`--prof`]: https://nodejs.org/en/docs/guides/simple-profiling/
+[`npm audit`]: https://docs.npmjs.com/cli/v7/commands/npm-audit
+[`npm ci`]: https://docs.npmjs.com/cli/v7/commands/npm-ci
+[`require.resolve()`]: https://nodejs.org/api/modules.html#requireresolverequest-options
+[dotenv]: https://www.npmjs.com/package/dotenv
+[guides]: https://nodejs.org/en/docs/guides/
+[n]: https://github.com/tj/n
+[nvm]: https://github.com/nvm-sh/nvm
+[official website]: https://nodejs.org/