DogDataProvider.tsx

interface State {
  data: IDog;
  status: Status;
  error: Error;
}

const initState: State = { status: Status.loading, data: null, error: null };

const DogDataProviderContext = React.createContext(undefined);
DogDataProviderContext.displayName = 'DogDataProvider';

const DogDataProvider: React.FC = ({ children }): React.ReactElement => {
  const [state, setState] = React.useState<State>(initState);

  React.useEffect(() => {
    setState(initState);

    (async (): Promise<void> => {
      try {
        // MOCK API CALL
        const asyncMockApiFn = async (): Promise<IDog> =>
          await new Promise(resolve => setTimeout(() => resolve(DATA), 1000));
        const data = await asyncMockApiFn();

        setState({
          data,
          status: Status.loaded,
          error: null
        });
      } catch (error) {
        setState({
          error,
          status: Status.error,
          data: null
        });
      }
    })();
  }, []);

  return (
    <DogDataProviderContext.Provider value={state}>
      {children}
    </DogDataProviderContext.Provider>
  );
};