Hono middleware

Write Hono middleware in Go with the experimental exp/hono package.

Hono is a JavaScript web framework that runs on Workers. exp/hono lets you write a Hono middleware in Go — the Hono app itself stays in JavaScript, and calls into your Wasm module on each request.

Write a middleware in Go

A hono.Middleware has the signature func(c *hono.Context, next func()). Call next() to pass control to the next middleware or route handler; work before next() runs on the way in, work after it runs on the way out.

import "github.com/syumai/workers-go/exp/hono"

func main() {
	hono.ServeMiddleware(hono.ChainMiddlewares(
		func(c *hono.Context, next func()) {
			c.SetHeader("X-Powered-By", "workers-go")
			next()
		},
	))
}

• hono.ServeMiddleware(m) registers the middleware and blocks.
• hono.ChainMiddlewares(m1, m2, ...) composes several middlewares into one, nesting them in order.

The Context API

*hono.Context wraps the Hono context object:

Wire it up in JavaScript

The Wasm module exposes a runHonoMiddleware binding. Register it as Hono middleware in your JavaScript entry point so it runs on each request; see the Hono documentation for the middleware API.