Type-checking Redux State with propTypes (without React)

index.js

import TodoReducer from 'TodoReducer'
import { createStore } from 'redux'

const store = createStore(TodoReducer)

store.dispatch({
    type: 'ADD_TODO',
    payload: {
        title: 'Example',
        done: 1,
    },
})

// Console Outputs:
// Warning: Failed property type: Invalid property `state[0].done` 
// of type `number` supplied to `TodoReducer`, expected `boolean`.