feat(websocket): Add generics type to WSContext

[hayatosc]

Fix #3327

Description

In this pull request, you can set ws.raw type as ServerWebSocket on Bun.
So, you can now use Bun own WebSocket API, including Pub/Sub feature!

import { Hono } from 'hono'
import { createBunWebSocket } from 'hono/bun'
import type { ServerWebSocket } from 'bun'

const app = new Hono()

const { upgradeWebSocket, websocket } = createBunWebSocket<ServerWebSocket>()

app.get(
  '/ws',
  upgradeWebSocket((c) => {
    return {
      onMessage(event, ws) {
        ws.raw.subscribe('chat-test') // ws.raw type is unknown now, but we will be able to set ServerWebSocket.
      },
    }
  })
)

The author should do the following, if applicable

• Add tests
• Run tests
• bun run format:fix && bun run lint:fix to format the code
• Add TSDoc/JSDoc to document the code

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.76%. Comparing base (f9349ec) to head (c3afc37).
Report is 19 commits behind head on next.

Additional details and impacted files

@@            Coverage Diff             @@
##             next    #3337      +/-   ##
==========================================
- Coverage   96.32%   95.76%   -0.56%     
==========================================
  Files         151      151              
  Lines       15385     9166    -6219     
  Branches     2687     2809     +122     
==========================================
- Hits        14819     8778    -6041     
+ Misses        566      388     -178     

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[yusukebe]

LGTM!

[yusukebe]

Hi @hayatosc !

It looks good. I'm wondering if we should include this feature in the next patch or minor release. After I decide, I'll merge it. Thank you for your contribution!