SseStream

A node stream for writing Server-Sent Events

Note I merged together:

• https://github.com/EventSource/node-ssestream/blob/master/README.md
• https://gist.github.com/gitawego/8ef33ec7d895498f2eedd95eafa835bb
• EventSource/node-ssestream#2

Installation

npm install ssestream2

Or:

yarn add ssestream2

Usage

In a (req, res) handler for a request event, Express #get route or similar:

const SseStream = require('ssestream2')

function (req, res) {
  const headers = {'CUSTOM-HEADER': 'FOO'}
  const sse = new SseStream(req, headers)
  sse.pipe(res)

  const message = {
    data: 'hello\nworld',
  }
  sse.write(message)
}

Properties on message:

• data (String or object, which gets turned into JSON)
• event
• id
• retry
• comment