Classes

Use constructors for object creation. Use private/read-only fields
Don’t use Object.assign, instead, use setters or constructors.
Don’t create new modules - it produces some issues with module references
All internal and external classes (such as DTOs, models, etc.) must have constructors
Order of props/methods should be:
- public properties
- protected properties
- private properties
- constructor
- public methods
- protected methods
- private methods
All fields must be readonly in case they're immutable
- Array fields can also have readonly type in case they're immutable, e.g.:
```
readonly someArrayField: readonly Type[]
```