I prefer using fractal-style component structure, avoiding folders like `components` for single-use components. It looks like this:

  src/
    App/
      screens/
        Login/
          component.tsx
          index.tsx
          model.tsx
          styles.scss
        Dashboard/
          SomeDashboardPart/
            component.tsx
            index.tsx
          SomeOtherDashboardPart/
            component.tsx
            index.tsx
          helpers/
            someHelper.tsx
          component.tsx
          index.tsx
          model.tsx
    components/
      Button/
        component.tsx
        index.tsx

`model.tsx` files here are MobX data models used for this specific component