const redis = require('redis');
const rejson = require('redis-rejson');

rejson(redis); /* important - this must come BEFORE creating the client */

const client = redis.createClient();
const my_json_key = 'my_json';

// Set value
client.json_set(my_json_key, '.', '{"test":1234}');
console.log('Set JSON at key ' + my_json_key + '.');

// Get value
client.json_get(my_json_key, '.test', (error, reply) => {
    if (error) {
        console.log(error);
        return;
    }
    console.log('value of test: ', reply); // outputs 1234
});

// Close redis client
client.quit();