Pouchdb and Cordova-sqlcipher-adapter on ionic: is it possible?

Question

I'd like to know if the following configuration is even possible for a hybrid app using ionic (angular) framework:

• ionic
• cordova-sqlcipher-adapter
• pouchdb

This should work if we use the cordova-sqlite-plugin using a pouch db adapter, pouchdb-adapter-cordova-sqlite, but it doesn't with the encrypted one.

The problem I face is that typescript doesn't transpile. I don't know how to set up the environment and define a sqlite-cipher database with a key.

Here's some sample typescript code:

import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import PouchDB from 'pouchdb';

import cordovaSqlitePlugin from 'pouchdb-adapter-cordova-sqlite';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})

export class HomePage {


  constructor(public navCtrl: NavController) {
    this.setUpPouch();
  }

  setUpPouch(){
    PouchDB.plugin(cordovaSqlitePlugin);
    let db = new PouchDB('dummypouch.db', { adapter: 'cordova-sqlite', key:"dummy_key"});
  }

}

I'd like to know if there's a way to pass the key to the PouchDB adapter without breaking transpilation.

The line that makes transpiling fail:

let db = new PouchDB('dummypouch.db', { adapter: 'cordova-sqlite', key:"dummy_key"});

The typescript transpile fails with this message:

[12:35:30]  typescript: src/pages/home/home.ts, line: 21 
            Argument of type '{ adapter: string; key: string; }' is not assignable to parameter of type 
            'DatabaseConfiguration'. Object literal may only specify known properties, and 'key' does not exist in type 
            'DatabaseConfiguration'. 


      L20:    PouchDB.plugin(cordovaSqlitePlugin);
      L21:    let db = new PouchDB('dummypouch.db', { adapter: 'cordova-sqlite', key:"dummy_key"});

Error: Failed to transpile program
    at new BuildError (/Users/santi/dummy_project/dummy_push_test/node_modules/@ionic/app-scripts/dist/util/errors.js:16:28)
    at /Users/santi/dummy_project/dummy_push_test/node_modules/@ionic/app-scripts/dist/transpile.js:159:20
    at new Promise (<anonymous>)
    at transpileWorker (/Users/santi/dummy_project/dummy_push_test/node_modules/@ionic/app-scripts/dist/transpile.js:107:12)
    at Object.transpile (/Users/santi/dummy_project/dummy_push_test/node_modules/@ionic/app-scripts/dist/transpile.js:64:12)
    at /Users/santi/dummy_project/dummy_push_test/node_modules/@ionic/app-scripts/dist/build.js:109:82
[12:35:30]  copy finished in 2.47 s 

Answer 1

I answer my own question for reference. Yes it is possible as long as we don't use the @types/pouchdb module that adds types to typescript.

In case we have them we have to remove it and fix everything to work without typing in the related variables:

npm uninstall --save @types/pouchdb

Another option, I guess, is to write the proper types and include them in the project... I didn't do it so I am not certain.