Search⌘ K
AI Features
Home
Courses
Grokking Node.js Design Patterns for Interviews

Implement a Config-Driven Notification Service Factory

Explore how to implement a config-driven notification service factory that dynamically generates the right notification service based on runtime configuration. Learn to avoid conditionals while ensuring proper error handling for unsupported channels in Node.js.

We'll cover the following...

Problem statement

Your app supports multiple notification channels—Email, SMS, and Push. The active channel is defined in a nested config object like:

const config = {
  notifications: {
    channel: 'sms'
  }
}

The team wants to support swappable notification ...