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sveltekit-io

v1.0.11

Published

Creates a Socket.io server at SvelteKit server startup and establishes a connection on the client side.

Downloads

165

Readme

sveltekit-io

License GitHub Issues GitHub Pull Requests

Create a Socket.io server at SvelteKit server startup and establish a connection on the client side.

Installation

npm install sveltekit-io

Basic setup

Basic example including CORS configuration : adding setup in the file /src/hooks.js :

import skio from "sveltekit-io";

skio.setup('http://localhost:3001', {
  cors: {
    origin     : "http://localhost:5173",
    credentials: true,
  },
});

This code sets up Socket.io on both server and client sides.

Use case example

A more advanced usage example : emitting "Hello" messages on new connections and others containing the request URL to all clients on each server request.

In file /src/hooks.js :

import skio from "sveltekit-io";
import {browser} from "$app/environment";

skio.setup('http://localhost:3001', {
  cors: {
    origin     : "http://localhost:5173",
    credentials: true,
  },
}).then(io => {

  if ( browser )
    return;

  io.on('connect', socket => {

    socket.on('message', message => {

      console.log(socket.id, "Client sent:", message);

      socket.emit('message', {message: 'Hello from server !'});
    });
  });
});

export const handle = async ({ event, resolve }) => {

  if ( !browser )
    skio.get()?.emit('message', {message: `New request: ${event.request.url}`} );

  return await resolve(event);
}

The Svelte hook onMount() is a way to ensure we are on the client side, so here for the file /src/routes/+page.svelte :

<script>

  import {onMount} from 'svelte';
  import skio from 'sveltekit-io';

  onMount(() => {

    const socket = skio.get();

    socket.on('message', message => {
      console.log("Server sent:", message);
    });

    socket.emit('message', {message: 'Hello from client !'});
  });

</script>

Contributing

If you encounter issues or have suggestions, feel free to open an issue or create a pull request. Contributions are welcome!

License

This project is licensed under the MIT License.