Totally four rounds of interview.
1. Initial Screening - They will completely analyse your profile in the first round itself.
2. Assignment round - If you complete this assignment, You can go anywhere you will have the knowledge. Complete package in a single question(React, Redux, Redux-Saga, Sail or Express and API consuming in client)
3. Technical Discussion 1 - Mostly from your current project, what is your roles and responsibilities and JS core concepts.
4. Technical Discussion - You need to have strong knowledge in JS, ES6 and new features in JavaScript.
If you thoroughly complete all of these rounds, You will get more questions and you gain more knowledge.