Resolution:

To implement the attention layer function, we are able to observe the rules talked about in the issue assertion and use the present tech stack.

Process Record:

1. Create a brand new element named “AwarenessInfo” to render cursor and identify for distant customers.

2. Create a brand new Konva layer to carry all of the “AwarenessInfo” elements.

3. Add the Konva layer to the principle whiteboard element.

4. Create a brand new Redux slice to retailer the attention data for distant customers.

5. Create an encapsulated view mannequin interface for the attention Redux slice.

6. Implement the “AwarenessInfo” element to retrieve and show the attention data for every distant person from the view mannequin.

7. Implement a technique within the encapsulated view mannequin interface to replace the attention data for every distant person.

8. When a distant person modifications the cursor location, dispatch the replace technique within the encapsulated view mannequin interface to replace the corresponding consciousness data.

9. Within the “AwarenessInfo” element, use the brand new location to animate the cursor change.

10. Write assessments for the brand new “AwarenessInfo” element, together with data-driven assessments to make sure it correctly shows the attention data for all distant customers.

11. Write assessments for the encapsulated view mannequin interface to make sure it correctly updates the attention data for distant customers.

12. Write end-to-end Cypress assessments to make sure the attention layer is correctly displayed and up to date when distant customers change their cursor location.

By following these duties, we are able to implement the attention layer function within the on-line whiteboard system.

Positive, this is a revised grasp plan with detailed element names, strategies, and props:

Process Record:

1. Create a brand new element named “AwarenessInfo” to render cursor and identify for distant customers. This element will obtain props reminiscent of person identify, cursor place, and on-line standing.

2. Create a brand new Konva layer named “AwarenessLayer” to carry all of the “AwarenessInfo” elements.

3. Add the “AwarenessLayer” to the principle whiteboard element.

4. Create a brand new Redux slice named “consciousness” to retailer the attention data for distant customers.

5. Create an encapsulated view mannequin interface named “AwarenessViewModel” for the “consciousness” Redux slice. This interface will comprise a technique named “updateUserAwarenessInfo” to replace the attention data for every distant person.

6. Implement the “AwarenessInfo” element to retrieve and show the attention data for every distant person from the view mannequin. The element will use the “useSelector” hook to retrieve the related data.

7. Implement the “updateUserAwarenessInfo” technique within the “AwarenessViewModel” interface to dispatch a Redux motion to replace the attention data for every distant person. This technique might be referred to as by the “MainWhiteboard” element.

8. When a distant person modifications the cursor location, dispatch the “updateUserAwarenessInfo” technique within the “AwarenessViewModel” interface to replace the corresponding consciousness data.

9. Within the “AwarenessInfo” element, use the brand new location to animate the cursor change. This may be achieved utilizing the Konva “Tween” animation.

10. Write assessments for the brand new “AwarenessInfo” element, together with data-driven assessments to make sure it correctly shows the attention data for all distant customers. The assessments might be written utilizing the React Testing Library.

11. Write assessments for the encapsulated view mannequin interface to make sure it correctly updates the attention data for distant customers. These assessments will use the Vitest framework.

12. Write end-to-end Cypress assessments to make sure the attention layer is correctly displayed and up to date when distant customers change their cursor location. The assessments will simulate person interactions with the whiteboard and confirm the state of the “AwarenessLayer” and “AwarenessInfo” elements.

Positive, this is an instance implementation of the assessments for the AwarenessViewModel and the attention slice with out utilizing redux-mock-store:

import { createAwarenessSlice, AwarenessState, updateAwareness } from './awarenessSlice';
import { AwarenessViewModel } from './AwarenessViewModel';

describe('AwarenessViewModel', () => {
  const mockDispatch = jest.fn();
  const initialState: AwarenessState = {
    customers: {
      'user1': {
        identify: 'Person 1',
        cursorPosition: { x: 0, y: 0 },
        on-line: true,
      },
      'user2': {
        identify: 'Person 2',
        cursorPosition: { x: 100, y: 100 },
        on-line: true,
      },
    },
  };
  let viewModel: AwarenessViewModel;

  beforeEach(() => {
    viewModel = new AwarenessViewModel(initialState, mockDispatch);
  });

  describe('getUserNames', () => {
    it('returns the record of person names', () => {
      const names = viewModel.getUserNames();
      anticipate(names).toEqual(['User 1', 'User 2']);
    });
  });

  describe('getCursorPosition', () => {
    it('returns the cursor place for a given person ID', () => {
      const cursorPosition = viewModel.getCursorPosition('user1');
      anticipate(cursorPosition).toEqual({ x: 0, y: 0 });
    });

    it('returns undefined for an unknown person ID', () => {
      const cursorPosition = viewModel.getCursorPosition('unknown');
      anticipate(cursorPosition).toBeUndefined();
    });
  });

  describe('updateCursorPosition', () => {
    it('dispatches the updateAwareness motion with the brand new cursor place', () => {
      viewModel.updateCursorPosition('user1', { x: 50, y: 50 });
      anticipate(mockDispatch).toHaveBeenCalledWith(updateAwareness({
        person: 'user1',
        cursorPosition: { x: 50, y: 50 },
      }));
    });
  });
});

And this is an instance implementation of the awarenessSlice with out utilizing redux-mock-store:

import { createSlice, PayloadAction } from '@reduxjs/toolkit';

export sort CursorPosition = { x: quantity, y: quantity };

export sort UserAwareness = {
  identify: string;
  cursorPosition: CursorPosition;
  on-line: boolean;
};

export sort AwarenessState = {
  customers: Document<string, UserAwareness>;
};

const initialState: AwarenessState = {
  customers: {},
};

const awarenessSlice = createSlice({
  identify: 'consciousness',
  initialState,
  reducers: {
    updateAwareness: (state, motion: PayloadAction<{ person: string, cursorPosition: CursorPosition }>) => {
      const { person, cursorPosition } = motion.payload;
      state.customers[user].cursorPosition = cursorPosition;
    },
    setOnline: (state, motion: PayloadAction<{ person: string, on-line: boolean }>) => {
      const { person, on-line } = motion.payload;
      state.customers[user].on-line = on-line;
    },
  },
});

export const { updateAwareness, setOnline } = awarenessSlice.actions;
export const awarenessReducer = awarenessSlice.reducer;

Word that since we’re not utilizing redux-mock-store, we have to cross a mock dispatch perform to the view mannequin constructor, and within the check for updateCursorPosition we have to examine that the proper motion was dispatched utilizing jest.fn().