fix: disable minimal mode for API routes (#1727)

Author: ascorbic

cypress/integration/default/api.spec.ts

@@ -1,3 +1,11 @@
+describe('API routes', () => {
+  it('serves custom headers on an api route', () => {
+    cy.request('/api/hello').then((response) => {
+      expect(response.headers).to.have.property('x-custom-api-header', 'my custom api header value')
+    })
+  })
+})
+
 describe('Extended API routes', () => {
   it('returns HTTP 202 Accepted for background route', () => {
     cy.request('/api/hello-background').then((response) => {

package-lock.json

@@ -66,8 +66,6 @@ const makeHandler = (conf: NextConfig, app, pageRoot, page) => {
 
     const NextServer: NextServerType = getNextServer()
     const nextServer = new NextServer({
-      // We know we're just an API route, so can enable minimal mode
-      minimalMode: true,
       conf,
       dir,
       customServer: false,