Package Exports
- eventsource-parser
Readme
eventsource-parser
A streaming parser for server-sent events/eventsource, without any assumptions about how the actual stream of data is retrieved. It is intended to be a building block for clients and polyfills in javascript environments such as browsers, node.js and deno.
You create an instance of the parser, and feed it chunks of data - partial or complete, and the parse emits parsed messages once it receives a complete message.
Installation
npm install --save eventsource-parserUsage
import {createParser, ParsedEvent, ReconnectInterval} from 'eventsource-parser'
function onParse(event: ParsedEvent | ReconnectInterval) {
if (event.type === 'event') {
console.log('Received event!')
console.log('id: %s', event.id || '<none>')
console.log('name: %s', event.name || '<none>')
console.log('data: %s', event.data)
} else if (event.type === 'reconnect-interval') {
console.log('We should set reconnect interval to %d milliseconds', event.value)
}
}
const parser = createParser(onParse)
const sseStream = getSomeReadableStream()
for await (const chunk of sseStream) {
parser.feed(chunk)
}
// If you want to re-use the parser for a new stream of events, make sure to reset it!
parser.reset()
console.log('Done!')License
MIT © Espen Hovlandsdal