// a casual request logging middleware
app.use(async (ctx, next) => {
    console.log("[>>>] %s %s", ctx.method, ctx.path)
    try {
        await next()
    } catch(err) {
        if (err.status) {
            ctx.status = err.status
        }
    } finally {
        console.log("[%s] %s %s", ctx.status, ctx.method, ctx.path)
    }
})

// mouting another app
app.use(mount('/api', async (ctx, next) => {
    return ctx.throw(403, 'Forbidden')
}))

[>>>] GET /api/user
[403] GET /user

[>>>] GET /api/user
[403] GET /api/user