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fetch-sse
Advanced tools
Readme
This package provides an easy API for making Event Source requests with all the features of Fetch API, and supports browsers and nodejs.
npm install fetch-sse
import { fetchEventData } from 'fetch-sse';
await fetchEventData('/api/sse', {
method: 'POST',
data: { foo: 'bar' },
headers: {
'Content-Type': 'application/json',
'Authorization': 'Bearer token'
},
onMessage: (event) => {
console.log(event);
}
})
You can pass in other parameters in a similar way to the Fetch API.
import { fetchEventData } from 'fetch-sse';
await fetchEventData('/api/sse', {
method: 'POST',
data: { foo: 'bar' },
headers: {
'Content-Type': 'application/json',
'Authorization': 'Bearer token'
},
signal: ctrl.signal,
onMessage: (event) => {
console.log(event.data);
}
})
Interface
export interface IFetchOptions {
method?: string;
headers?: HeadersInit | Record<string, any>;
data?: Record<string, any>;
signal?: AbortSignal;
onMessage?: (event: ServerSentEvent | null, done?: boolean) => void;
onOpen?: () => void;
onClose?: () => void;
onError?: (error: any) => void;
}
// decoded event
export interface ServerSentEvent {
event: string | null;
data: string;
raw: string[];
}
The event stream is a simple stream of text data that encoded using UTF-8. You can find more information here.
raw:
data: {"username": "bobby", "time": "02:33:48"}\n\n
parsed:
{
event: null,
data: '{"username": "bobby", "time": "02:33:48"}',
raw: [
'data: {"username": "bobby", "time": "02:33:48"}'
]
}
raw:
:HTTP\n
id: 1\n
event: result\n
data: {"username": "bobby", "time": "02:33:48"}\n\n
parsed:
{
event: 'result',
data: {"username": "bobby", "time": "02:33:48"},
raw: [
':HTTP',
'id: 1',
'event: result',
'data: {"username": "bobby", "time": "02:33:48"}'
]
}
this package is written in typescript and compatible with browsers and nodejs, You might need to polyfill TextDecoder for old versions of browsers.
FAQs
An easy API for making Event Source requests, with all the features of fetch(), Supports browsers and nodejs.
We found that fetch-sse demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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