Senior React Native Developer

Q1. What is the InteractionManager and how is it used? Why is it important?


Q2. Which node_modules will run in React Native? How can we test for this?


Q3. What is wrong with this code for querying a native API?

class GyroJs {
    setGyroPosition(pos) {
        if (pos === null || typeof pos === 'undefined') {
            throw new Error('The position must be defined');
        }
        this.pos = pos;
    }
    constructor() {
        const gyroscopePosition = NativeModules.MyGyroModule.gyroPosition();
        this.setGyroPosition(gyroscopePosition);
    }
}


Q4. Write a reducer that returns a new state with isAuthorised set to true.

const initialState = {
 user: {
   isAuthorised: false,
 }
};

The reducer function has the following signature:

(previousState = initialState, action) => newState

Where the action has a payload containing a property isAuthorised set to true.


Q5. 
a) Write a pseudo-code that uses the fetch API which makes request to https://jsonplaceholder.typicode.com/users

b) Render as a list in the UI