export middleware custom route matcher

Author: pettinarip

src/middleware.ts

@@ -2,8 +2,6 @@ import { NextRequest, NextResponse } from "next/server"
 
 import { DEFAULT_LOCALE, FAKE_LOCALE, LOCALES_CODES } from "./lib/constants"
 
-const PUBLIC_FILE = /\.(.*)$/
-
 function detectLocale(acceptLanguage: string | null) {
   if (!acceptLanguage) {
     return DEFAULT_LOCALE
@@ -21,17 +19,23 @@ function detectLocale(acceptLanguage: string | null) {
   return locale
 }
 
+export const config = {
+  matcher: [
+    /*
+     * Match all request paths except for the ones starting with:
+     * - api (API routes)
+     * - _next/static (static files)
+     * - _next/image (image optimization files)
+     * - favicon.ico (favicon file)
+     * - .well-known (security files)
+     */
+    "/((?!api|_next/static|_next/image|favicon.ico|.well-known).*)",
+  ],
+}
+
 // Middleware required to always display the locale prefix in the URL. It
 // redirects to the default locale if the locale is not present in the URL
 export async function middleware(req: NextRequest) {
-  if (
-    req.nextUrl.pathname.startsWith("/_next") ||
-    req.nextUrl.pathname.includes("/api/") ||
-    PUBLIC_FILE.test(req.nextUrl.pathname)
-  ) {
-    return
-  }
-
   if (req.nextUrl.locale === FAKE_LOCALE) {
     // Apparently, the built-in `localeDetection`from Next does not work when
     // using the faked locale hack. So, we need to detect the locale manually