MapleLabs Front End Developer (React JS) interview questions

1st round: Simple questions on react - why and what of react. Virtual dom . simple array and object manipulation in javascript. Lifecycle of react. 2nd round: Some concepts in react and react hooks(about use context, use ref, use callback, usestate, usereducer) redux, redux thunk, Form validation in react. Difference between Props and state. the version of react which you used. What and why of closure. Why do we need typescript ?. Be genuine of what you know and what you dont know. My interviewer asked questions based on what i said i know