False negatives in tracking with React.memo

[dai-shi]

Just tried to imeplement ToDo app with useReducer pattern.
With React.memo, I found a huge limitation in the current implementation.

If tracking finds both todo object and todo.id are used, todo is checked for ref equality in memo, we have false negatives (no render).

More investigation needed. (Like why js-framework-benchmark is working.)

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There are two issues.

1. use a property in callback

onChange={() => dispatch({ type: 'TOGGLE_TODO', id: todo.id })}

2. use a property for key

<TodoItem key={todo.id} todo={todo} />