React native support

[ck-kc]

Anyone done any work on porting crypto-pouch to react native?

I got stuck installing it due to lack of stream in react native. I can't remember which dependency required this...

Tried playing with rn-nodeify but it decided to delete all my package.jsons...

If no-one has done any work on it so far, I might start a fork and work it out.

[calvinmetcalf]

the encryption stuff requires streams and buffers and string_decoder, you are probably better off using browserify to bundle this and then use that from react-native

[rodolfobarretoweb]

@calvinmetcalf You can explain better ? I have the same issue of @ck-alpha

[calvinmetcalf]

react native doesn't include any of the native node modules like stream or crypto which other bundlers like browserify shim for you so you're probably better off including a pre bundled version of this library if you want to use it with react native

[rodolfobarretoweb]

@calvinmetcalf Tranks for your attention. I try your solution adding the code to a file in my project and used in my database file, but I get this error: Unable to resolve module './lib/_stream_duplex.js'

My code implementation:

import PouchDB from 'pouchdb-react-native';
import Find from 'pouchdb-find';
import Load from 'pouchdb-load';
import SQLite from 'react-native-sqlite-2';
import CryptoPouch from './crypto-pouch';
import SQLiteAdapterFactory from 'pouchdb-adapter-react-native-sqlite';
import Search from 'pouchdb-quick-search';
import { DEVELOPMENT } from 'app/configs/constants';

PouchDB.plugin(SQLiteAdapterFactory(SQLite));
PouchDB.plugin(Find);
PouchDB.plugin(Search);
PouchDB.plugin(Load);
PouchDB.plugin(CryptoPouch);

/*
 * DEBUG POUCH DB
 * Options: *, pouchdb:api, pouchdb:http
 * PouchDB.debug.enable(pouchdb:api)
*/

class Database {
  constructor() {
    this.pouchdb = null;
    this.local   = null;
    this.remote  = null;
  }

  setup({ local = null, remote = null }) {
    if(this.local !== local || this.remote !== remote) {
      this.local  = local;
      this.remote = remote;

      this.pouchdb = {
        local  : new PouchDB(local, { include_docs : true, auto_compaction : true, adapter : 'react-native-sqlite' }),
        remote : (remote && new PouchDB(remote, { skipSetup : true })) || null
      };

      ['local', 'remote'].forEach(prop => {
        this.pouchdb[prop].crypto(local, {
          algorithm: 'chacha20'
        });
      });
    }

    return this.pouchdb;
  }

  reset() {
    this.local   = null;
    this.remote  = null;
    this.pouchdb = null;
  }

  destroy() {
    if(this.pouchdb && this.pouchdb.local) {
      return this.pouchdb.local.destroy();
    }

    return this.pouchdb;
  }

  onSync({ onChange, onError, onComplete }) {
    return this.pouchdb.local.sync(this.pouchdb.remote, {
      live  : true,
      retry : true
    }).on('change',   onChange)
      .on('complete', onComplete)
      .on('error',    onError)
  }
}

// exporting Database as a Singleton
export default new Database();

[garbados]

Hey everybody! We just published version 4.0 which bundles some very different dependencies that might work better for your situation. I invite you to try again and let me know how it goes :)

I'm closing this issue for now since it's been a few years, but I can re-open it if you still need help.