feat: useAsync

Author: pi0

README.md

@@ -36,6 +36,9 @@ const app = createApp()
 app.use('/api', (req) => ({ url: req.url }))
 app.use(() => 'Hello world!')
 
+// app.useAsync(async () => {})
+// app.use('/big', () => import('./big'), { lazy: true })
+
 const port = process.env.PORT || 3000
 const server = new Server(app.handle)
 
@@ -65,6 +68,9 @@ Converts a classic middleware (`req, res, next?`) into promisifier version ready
 - If calling middleware throws an immediate error, promise will be rejected
 - On `close` and `close` events of res, promise will `resolve/reject` (to ensure if middleware simply calls `res.end`)
 
+When calling `app.use`, middleware will be automatically promisified.
+If you are already making an async aware middleware, can use `app.useAsync`
+
 ## License
 
 MIT

src/app.ts

@@ -17,7 +17,10 @@ export function createApp (options: AppOptions = {}): App {
   app.stack = stack
   app.handle = handle
   // @ts-ignore
-  app.use = (...args) => use(app, ...args)
+  app.use = (arg1, arg2, arg3) => use(app, arg1, arg2, arg3)
+  // @ts-ignore
+  app.useAsync = (arg1, arg2) =>
+    use(arg1, arg2 !== undefined ? arg2 : { promisify: false }, { promisify: false })
 
   return app as App
 }

src/types.ts

@@ -37,6 +37,7 @@ export interface App {
   stack: Stack
   handle: PHandle
   use: AppUse
+  useAsync: AppUse
 }
 
 export interface AppOptions {