EventStream convert '\n' to ''

[gyhyfj]

Environment

node 20.12.1
nitropack 2.9.6

Reproduction

// server side
const eventStream = createEventStream(event)
eventStream.push('\n')

// client side
const sse = new EventSource('path/to/sse')
sse.addEventListener('message', e => {
console.log(e.data'')
})

Describe the bug

hope to deliver '\n' to client side, but get ''

Additional context

No response

Logs

No response

[joshmossas]

Server sent event messages are delimited by \n\n. So if you send a message that is only a single newline the client will see data:\n\n\n and think that the message has ended after the second \n.

If you want to deliver a message that consists of only '\n' then you will probably need to escape it or wrap it in quotes.