Flutter Development Guidelines

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Rules file

---
description: "Cursor rules for Flutter development with MVVM architecture, Riverpod state management, Material widgets, and Dart style guidelines."
globs: **/*.dart
alwaysApply: false
---
### Code style and structure
- Write concise and efficient source code.
- Strive for source code that is easy to read and maintain, and provide accurate examples.
- Avoid duplication of code: modularise widgets and functions into reusable components.
- Use descriptive variable names: use names with auxiliary verbs such as isLoading, hasError.

### Directory structure under /lib.
- /lib/models/: data models and type definitions (Models)
- /lib/viewmodels/: state management and business logic (ViewModel)
- /lib/views/widgets/: reusable widgets (View)
- /lib/views/screens/: per-screen widgets (View)
- /lib/services/: service classes for API calls and data access
- /lib/utils/: helper functions and constants

### Naming conventions
- Directories and files: use snakeCase (e.g. auth_wizard.dart).
- UpperCamelCase: use for class names/enumerations/typedefs/type parameters, etc.
- LowerCamelCase: used for variables/functions/class members (properties, methods), etc.
- lowercase_with_underscores (snakeCase): for files/directories/packages/libraries, etc.

### Import.
- Place imports starting with dart: first (use lowercase_with_underscores for the import prefix).
- Next, import third-party packages (package:).
- Finally, import relative paths and files in the project.

### Using Dart.
- Take advantage of type safety: use static typing in all code and utilise type inference wherever possible.

### UI and styling.
- Use Material widgets.
- Unify theming: use ThemeData to apply consistent styles.

### Performance optimisation.
- Prefer StatelessWidget when state is not required.
- Make use of const constructors: if widgets are immutable, use const to optimise builds.

### State management.
- Use riverpod to implement efficient state management.
- Manage state within the ViewModel and link it to the View.

### Software architecture
Use MVVM (Model View ViewModel).

### Key rules.
- To improve code readability, lines should not exceed 80 characters in length.
- Use braces {} for all flow control structures (if, for, while, etc.).
- Use comment-outs proactively to help understand and maintain code.
- Use single quotes, avoid the use of double quotes and use consistent string literals to improve readability.

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Scanned Nov 4, 2026 at commit b044f956f021, with Cisco's open-source skill-scanner.

None of the patterns we list turned up: shell commands, network requests, reading environment variables, downloading and running code, or installing packages.

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