Notification Service (Queue, Templates, Channels)

A notification service with queue and channels

A notification engine in Node.js: FIFO send queue with retry/backoff, template rendering with helpers, mock email/SMS/push channels, scheduling and logs.

What's included

• Send queue — FIFO with retry/backoff
• Templates — render with variables + helpers
• Channels — email, SMS, push (mock adapters)
• Scheduler — delay and recurring jobs
• Store — persistent notification records
• Logger + metrics — built-in
• 28 passing tests — node:test suite

Quick Start

npm install
npm run build
node -e "import('./src/index.js').then(m=>console.log(typeof m.createNotificationService))"

Stack

Node.js 18+ · pure ESM · zero runtime deps

Use cases

• Email/SMS/push pipelines
• Scheduled reminders
• Alerting systems
• Learning queue design