checklist.md

1. [CODE STYLE] - don't mutate object or arrays - it will cause unexpected results later on. You should make copy using Object.assign or spread operator
2. [CODE STYLE]: Use switch statement if you have limited amount of conditions.
3. [CODE STYLE]: switch/case should always have default case for error handling.
4. [DONT REPEAT YOURSELF] - If you perform same action in all switch cases - do it just once afterwards.
5. [CODE KNOWLEDGE] - use object desructuring for getting values from object.

EXAMPLE:

const { type, extraData, keysToRemove } = action;

6. [NAMING] - use proper names for object copy and

BAD EXAMPLE:

const copy = { ...state }

GOOD EXAMPLE:

const stateCopy = { ...state }