How to use the @ionic/storage.Storage function in @ionic/storage

import { Injectable } from '@angular/core';
import { Storage } from '@ionic/storage';
import { Effect } from '@ngrx/effects';
import { ActionReducer } from '@ngrx/store';
import { defer, from, Observable, of } from 'rxjs';
import { catchError, map } from 'rxjs/operators';

const STORAGE_KEY = 'NSIS_APP_STATE';

const storage = new Storage({});

// get/setNested inspired by
// https://github.com/mickhansen/dottie.js
function getNested(obj: any, path: string): any {
  if (obj !== null && path) {
    // Recurse into the object.
    const parts = path.split('.').reverse();
    while (obj != null && parts.length) {
      obj = obj[parts.pop()];
    }
  }
  return obj;
}

function setNested(obj: any, path: string, value: any): any {
  if (obj != null && path) {

export function provideStorage() {
  return new Storage({ name: '__twitter-pwa' });
}

public static initStorage(): Storage {
    return new Storage({});
  }

export function provideStorage() {
    return new Storage({ name: '__wphc' });
}

constructor() {
        this.nativeStorage = new NativeStorage();
        this.localStorage = new LocalStorage({});
    }