[feat] hono in WebExtensions

[loynoir]

What is the feature you are proposing?

Would be nice to able to run hono app within WebExtensions webRequest environment

https://hono.dev/docs/getting-started/basic

related

w3c/webextensions#1017

Would be nice to easily switch hono IIFE bundler impl among

• deno
• service worker
• web extension

But currently, only able to switch among

• deno
• service worker

Would be nice if hono add support for

• web extension

[mohamedramadan14]

I've submitted a PR that adds a hono/web-extension adapter to support running Hono apps inside WebExtension webRequest environments.

PR: #5009

The adapter provides fire() and handle() functions (mirroring the existing hono/service-worker adapter pattern) that:

1. Listen to chrome.webRequest.onBeforeRequest events
2. Convert WebRequestDetails into standard Request objects
3. Pass them through the Hono app
4. Convert the Response back to a BlockingResponse via data URL redirect

Usage:

import { Hono } from 'hono'
import { fire } from 'hono/web-extension'

const app = new Hono()
app.get('/api/hello', (c) => c.json({ message: 'Hello!' }))

fire(app, { filter: { urls: ['*://*.example.com/*'] } })

This allows easily switching among Deno, Service Worker, and Web Extension environments as requested.