docs+feat: improve contributing guide and add clean_examples utility

- Add more detailed instructions for development workflow
- Clarify type stub generation process
- Add troubleshooting section
- Add clean_examples.py utility script
- Improve formatting and organization

Co-Authored-By: Alek Petuskey <alek@reflex.dev>

.pre-commit-config.yaml

@@ -1,7 +1,6 @@
 fail_fast: true
 
 repos:
-
   - repo: https://github.com/charliermarsh/ruff-pre-commit
     rev: v0.8.2
     hooks:
@@ -11,26 +10,26 @@ repos:
         args: ["--fix", "--exit-non-zero-on-fix"]
         exclude: '^integration/benchmarks/'
 
-  # Run pyi check before pyright because pyright can fail if pyi files are wrong.
   - repo: local
     hooks:
       - id: update-pyi-files
         name: update-pyi-files
         always_run: true
         language: system
+        entry: poetry run python scripts/make_pyi.py
         description: 'Update pyi files as needed'
-        entry: python3 scripts/make_pyi.py
 
-  - repo: https://github.com/RobertCraigie/pyright-python
+  - repo: local
-    rev: v1.1.313
     hooks:
       - id: pyright
-        args: [reflex, tests]
+        name: pyright
+        entry: poetry run pyright
         language: system
+        types: [python]
+        args: [reflex, tests]
 
   - repo: https://github.com/terrencepreilly/darglint
     rev: v1.8.1
     hooks:
       - id: darglint
         exclude: '^reflex/reflex.py'
-

CONTRIBUTING.md

@@ -27,25 +27,32 @@ cd reflex
 poetry install
 ```
 
-**4. Now create an examples folder so you can test the local Python build in this repository.**
+**4. Create an examples directory within the repository:**
 
-- We have the `examples` folder in the `.gitignore`, so your changes in `reflex/examples` won't be reflected in your commit.
+The examples directory is used for testing your local changes. It's included in `.gitignore` so your test apps won't be committed.
 
 ``` bash
 mkdir examples
 cd examples
 ```
 
-**5. Init and Run**
+**5. Init and Run:**
+
+Initialize a new Reflex app and run it in development mode:
 
 ``` bash
-poetry run reflex init
+poetry run reflex init  # Select option 0 for blank template
-poetry run reflex run
+poetry run reflex run  # Add --frontend-only for faster frontend-only development
 ```
 
-All the changes you make to the repository will be reflected in your running app.
+The development server will start and your app will be available at http://localhost:3000. The server will automatically reload when you make changes to your code.
 
-- We have the examples folder in the .gitignore, so your changes in reflex/examples won't be reflected in your commit.
+**Note:** In development mode, the server may occasionally need to be restarted when making significant changes. You can use Ctrl+C to stop the server and run it again.
+
+To clean up your examples directory and start fresh, you can use the provided cleanup script:
+```bash
+poetry run python scripts/clean_examples.py
+```
 
 ## 🧪 Testing and QA
 
@@ -63,29 +70,27 @@ Within the 'test' directory of Reflex you can add to a test file already there o
 
 Once you solve a current issue or improvement to Reflex, you can make a PR, and we will review the changes.
 
-Before submitting, a pull request, ensure the following steps are taken and test passing.
+Before submitting a pull request, ensure the following steps are taken and tests are passing:
 
-In your `reflex` directory run make sure all the unit tests are still passing using the following command.
+1. Run unit tests and coverage checks:
+``` bash
+poetry run pytest tests/units --cov --no-cov-on-fail --cov-report=
+```
 This will fail if code coverage is below 70%.
 
-``` bash
+2. Run code quality checks:
-poetry run pytest tests/units --cov --no-cov-on-fail --cov-report= 
-```
-
-Next make sure all the following tests pass. This ensures that every new change has proper documentation and type checking.
-
 ``` bash
 poetry run ruff check .
 poetry run pyright reflex tests
 find reflex tests -name "*.py" -not -path reflex/reflex.py | xargs poetry run darglint
 ```
 
-Finally, run `ruff` to format your code.
+3. Format your code:
-
 ``` bash
 poetry run ruff format .
 ```
 
+4. Install and run pre-commit hooks:
 Consider installing git pre-commit hooks so Ruff, Pyright, Darglint and `make_pyi` will run automatically before each commit.
 Note that pre-commit will only be installed when you use a Python version >= 3.9.
 
@@ -93,17 +98,52 @@ Note that pre-commit will only be installed when you use a Python version >= 3.9
 pre-commit install
 ```
 
-That's it you can now submit your PR. Thanks for contributing to Reflex!
+You can also run the pre-commit checks manually:
+```bash
+pre-commit run --all-files
+```
+
+## Type Stub Generation
+
+When adding new components or modifying existing ones, you need to regenerate the type stub files (.pyi). This ensures proper type checking and IDE support.
+
+To generate type stubs:
+```bash
+poetry run python scripts/make_pyi.py
+```
+
+After running this command:
+1. Check `git status` to see if any .pyi files were modified
+2. If changes were made, include them in your commit
+3. If no changes were made, your types are up to date
+
+## Editing Templates
+
+To edit the templates in Reflex you can do so in two ways:
+
+1. Change to the basic `blank` template can be done in the `reflex/.templates/apps/blank` directory.
+
+2. Other templates can be edited in their own repository. For example the `sidebar` template can be found in the [`reflex-sidebar`](https://github.com/reflex-dev/sidebar-template) repository.
 
 
-## Editing Templates 
+## Troubleshooting
 
-To edit the templates in Reflex you can do so in two way.
+Common issues and their solutions:
 
-Change to the basic `blank` template can be done in the `reflex/.templates/apps/blank` directory.
+1. **Development Server Issues**
+   - If the development server becomes unresponsive, stop it with Ctrl+C and restart
+   - For frontend-only changes, use `--frontend-only` flag for faster development
+   - Clear the examples directory using `scripts/clean_examples.py` if you encounter unexplained issues
 
-Others templates can be edited in their own repository. For example the `sidebar` template can be found in the [`reflex-sidebar`](https://github.com/reflex-dev/sidebar-template) repository.
+2. **Pre-commit Hook Failures**
+   - Run `pre-commit run --all-files` to identify specific issues
+   - Ensure you've formatted code with `ruff format .` before committing
+   - Check that type stubs are up to date with `make_pyi.py`
 
+3. **Type Checking Errors**
+   - Verify your changes haven't broken type definitions
+   - Regenerate type stubs if you modified components
+   - Check the error messages from pyright for specific type issues
 
 ## Other Notes
 
@@ -112,5 +152,5 @@ For some pull requests when adding new components you will have to generate a py
 (Please check in with the team before adding a new component to Reflex we are cautious about adding new components to Reflex's core.)
 
 ``` bash
-poetry run python scripts/make_pyi.py 
+poetry run python scripts/make_pyi.py
-```
+```

scripts/clean_examples.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+"""Script to clean up the examples directory.
+
+This script helps developers maintain a clean development environment by removing
+the examples directory and its contents. This is useful when switching between
+different example apps or when wanting to start fresh.
+"""
+
+import shutil
+from pathlib import Path
+
+
+def clean_examples():
+    """Remove the examples directory and its contents."""
+    examples_dir = Path(__file__).parent.parent / "examples"
+    if examples_dir.exists():
+        print(f"Removing examples directory at {examples_dir}")
+        shutil.rmtree(examples_dir)
+        print("Examples directory removed successfully.")
+    else:
+        print("No examples directory found.")
+
+
+if __name__ == "__main__":
+    clean_examples()