REACT

What is wrong with this component?

  class MyComponent extends React.Component {

    getInitialState() {
      return { clickable: false };
    }
  }

Could you implement a select field with a functional component?

How would you specify a custom data structure in props?

ECOSYSTEM

Flux:

what is the difference between these two type definitions:

a: ?Array<string>
b?: Array<string>

Also, would this definition mean anything?

c: Array<?string>

Is ESLINT only a style checker?

Could you come up with an example of its use transcending the syntax domain?

List some different methods to style components