I have a mono repo comprised of a react client and a BFF server. Is there a tool I can use to automatically detect dead code?

To be clear, I define dead code as code that would never execute due to lack of valid entry point or impossible state.

If no fully automated tool exist, what tools can I use to guide me through this process?
user
Sure, I can help you with this.

**1. For React Client:**

You can use tools like ESLint and Prettier to identify dead code and performance issues. Here's how you can use them together:

- **ESLint**: ESLint ensures that your code adheres to the codebase's coding standards. It can check for issues like unused variables, missing comments, and improper indentation.
  - Install ESLint: `npm install eslint`
  - Create a `.eslintrc.js` file in your project. See the official documentation for examples: https://eslint.org/docs/user-guide/configuring
  - Run it: `npm run lint`

- **Prettier**: With ESLint configurated, you can install Prettier, which automatically formats your code, and code style errors can be fixed with Prettier.
  - Install Prettier: `npm install prettier eslint-plugin-prettier eslint-cli`
  - Add this code to your `package.json`:

```json
"scripts": {
  // ...
  "prettier": "eslint --stdin --stdin-filename . --write",
  "format": "prettier --check"
}
```

  - Then, execute `npm run prettier` to auto-format.

**2. For the BFF Server:**

In your server, you might have implemented middleware to detect dead code. If your code isn't returned before BFF's init step then failed safeguards of Error handling, try to handle any thrown errors.

However, you could add some Business Rules to BFF. For that, consider using Lambda Functions like AWS Lambda Functions, Serverless Framework, Express.js, Firebase Function, Node.js Function that does not trigger the next function but hosts it in an AWS serverless application. It gets activated for the request. Lambda functions should generate an exact codecast for the basis module, secure context and record duration.

If we mention excise functions, I recommend that as an expert who achieves blockchain purposes, you could work along with functions used mainly for objective prepare. These features will not ever be invoked to client feature, and you will be in charge of presenting these nothing to client features, from the very production environment. Please understand, these features run throughout serverless design or schedule functions.

Node.js is also a useful and enhance dynamic-scripting environment to decide upon record that runs JavaScript. And which is suitable for undertaking employee-deployment of web to software.

**3. **

I'd recommend these to be performed as a last back up. There's no valid automated device (in reputable or costly haven.io and others that are free, however they have memory limit for free editions) perfect for the purpose.

- Debugging Resources and Techniques: Get the tips and do not forget to use Wireshark.

- GitHub: redeem extra blend with codes critics or refactor codes.

- Do manual explorations, mainly guide you be familiar with hoped state before existing lifecycle.

- Memento is a Git-based analysis guide, administrations software and merging into your Git repository, that may be constantly improved into your desirous status instead of requesting a extracted documents.

- As usual, your skill in your browser, render-wise your clients side, or many of people, has functions to prepare for deadcode, possibly using Lighthouse and many other play together you think.

I hope this support!
assistant
I have a mono repo comprised of a react client and a BFF server. Is there a tool I can use to automatically detect dead code?

To be clear, I define dead code as code that would never execute due to lack of valid entry point or impossible state.

If no fully automated tool exist, what tools can I use to guide me through this process?
user
For a mono repo with a React client and a BFF (Backend for Frontend) server, you can use a combination of tools to detect dead code automatically or semi-automatically. There isn't a single tool that covers both frontend and backend, but you can use different ones for each part of your project.

**For the React client (JavaScript/TypeScript):**

1. ESLint: A popular pluggable linting utility for JavaScript and JSX. You can use specific plugins like `eslint-plugin-react`, `eslint-plugin-unused-imports`, and `eslint-plugin-react-perf` to help detect dead code and unused imports.
   To get started with ESLint, follow the official guide: https://eslint.org/docs/user-guide/getting-started

2. Jest: Though primarily a testing framework, Jest comes with a coverage analysis feature that can help you identify dead code by highlighting lines that aren't reached during testing.
   Learn how to use Jest for coverage analysis: https://jestjs.io/docs/en/coverage

**For the BFF server:**

Assuming your BFF server is written in Node.js (JavaScript/TypeScript), you can still use ESLint as mentioned above. For other backend languages, you can refer to the following tools:

1. For Python, use `pylint` or `flake8` with plugins like `flake8-unused-arguments` and `flake8-deadfunction`.
2. For Ruby, use `rubocop` with the `RailsBestPractices` gem.
3. For Java, use `FindBugs` or `PMD`.
4. For .NET (C#, VB.NET), use `Roslynator`, `ReSharper`, or `StyleCop`.

While fully automated tools might not exist to suit your exact needs, combining the aforementioned tools will guide you through the process of detecting dead code in your mono repo. Be sure to integrate these tools into your continuous integration pipeline to keep your codebase clean and efficient.
assistant