Lowdb react native driver based on RNFS

rndriver.js

import RNFS from 'react-native-fs';

module.exports = {
    read: (source) =>
    {
        return RNFS.exists(source).then((fileExists) =>
        {
            if (fileExists)
            {
                return RNFS.readFile(source).then((data) => JSON.parse(data));
            }
            else
            {
                return RNFS.writeFile(source, '{}', 'utf8').then((success) =>
                {
                    return {};
                }).catch((error) =>
                {
                    console.error(error);
                });
            }
        });
    },
    write: (dest, obj) =>
    {
        RNFS.exists(dest).then((fileExists) =>
        {
            if (fileExists)
            {
                return RNFS.writeFile(dest, JSON.stringify(obj, null, 2));
            }
            else
            {
                throw new Error('File doesn\'t exists');
            }
        }).catch((error) =>
        {
            console.error(error);
        });
    }
};