In what area(s)?

/area test-and-release

Describe the proposal

Add /assign feature to dapr-bot workflow

Add a new schematic to generate:

A service that extends ComponentStore
A spec file if requested
Maybe an inlined interface for the default type

Describe any alternatives/workarounds you're current

When I use removeItem state operator then TypeScript complains that message object can be possibly undefined even though I specified the type for removeItem operator. I could fix the issue with optional chaining but that is not possible if I want to use a utility library like Ramda

![image](https://user-images.githubusercontent.com/14946081/104027016-135aed80-51c7-11eb-9316-9b3dbf5b79bf

I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[x ] Bug report  

what is prefer way to add relation and remove relation? I found example as below, but I did't find any document about the two methods.

 case 'ADD_AUTHOR_TO_BOOK':
        Book.withId(action.payload.bookId).authors.add(action.payload.author);  // add new entity ,  add relation?  this doesn't work.
        break;
    case 'REMOVE_AUTHOR_FROM_BOOK':
        Book.withId(action.payload.bo

I have a very big app and do not want to make a placeholder for each screen I would like to provide context to about what is loading. (And also do not want a general 'loading' message). Is there currently a way to change the title/subtitle easily for each ViewController, from the ViewController itself?

This needs to be done for:

• mobx
• flutter_mobx
• mobx_codegen

I would love to have native examples of all the state systems in https://snack.expo.io/

This is a bit of a haul, help needed.