What is the best way to pass common variables into separate modules in Node.js?

Question

I use separate router files as modules for main app and auth app. I can\'t get the best way to pass variables(db client) into routers. I don\'t want to hardcode it or pass i

Answer 1

I suggest you create a settings file with db instance and with other things which you need use globally like 'singleton'.

For example, I have settings.js with my redis db client:

var redis = require('redis');
exports.redis = redis.createClient(6379, '127.0.0.1');

And in other multiple modules I include it:

var settings = require('./settings');
setting.redis.<...>

Many time including it I always have one instance of db connection.