feat: add debug option to app

README.md

@@ -45,7 +45,7 @@ server.listen(port, () => {
 ## utils
 
 - `send (req, data, type)`
-- `error (req, error, code)`
+- `error (req, error, debug, code)`
 - `redirect (req, location, code)`
 - `lazy (handle)`
 

src/app.ts

@@ -1,9 +1,9 @@
 import type { IncomingMessage, ServerResponse } from 'http'
-import type { Stack, InputLayer, Handle, App } from './types'
+import type { Stack, InputLayer, Handle, App, AppOptions } from './types'
 import { promisifyHandle } from './promisify'
 import { send, error, MIMES } from './utils'
 
-export function createApp (): App {
+export function createApp (options: AppOptions = {}): App {
   const stack: Stack = []
 
   async function unsafeHandle (req: IncomingMessage, res: ServerResponse) {
@@ -42,7 +42,7 @@ export function createApp (): App {
   }
 
   const handle: Handle = function (req: IncomingMessage, res: ServerResponse) {
-    return unsafeHandle(req, res).catch((err: Error | any) => { error(res, err) })
+    return unsafeHandle(req, res).catch((err: Error | any) => { error(res, err, options.debug) })
   }
 
   function use (route: string, handle: Handle) {

src/types.ts

@@ -21,3 +21,7 @@ export interface App {
   unsafeHandle: Handle
   use: (route: string, handle: Handle) => void
 }
+
+export interface AppOptions {
+  debug?: boolean
+}

src/utils.ts

@@ -16,18 +16,17 @@ export function defaultContentType (res: ServerResponse, type: string) {
   }
 }
 
-export function error (res: ServerResponse, error: Error | string, code?: number) {
-  // @ts-ignore
-  res._error = error
-
+export function error (res: ServerResponse, error: Error | string, debug?: boolean, code?: number) {
   res.statusCode = code || (res.statusCode !== 200)
     ? res.statusCode
     // @ts-ignore
     : (error.status || error.statusCode || 500)
 
-  const message = error.toString()
+  if (debug) {
+    console.error(error) // eslint-disable-line no-console
+  }
 
-  res.end(res.statusCode + ' - ' + message)
+  res.end(`'"Internal error (${res.statusCode})"`)
 }
 
 export function redirect (res: ServerResponse, location: string, code = 302) {