Error: ɵgetOrCreateAngularServerApp is not a function when using lazy loading routes in 19.1.x SSR when HMR enabled

[Ruisi-Lu]

Command

serve

Is this a regression?

• Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

No response

Description

When implementing lazy loading routes, the application fails during runtime with the following error:

上午10:49:31 [vite] Internal server error: ɵgetOrCreateAngularServerApp is not a function
      at C:\Project\ssrtest\node_modules\.pnpm\@angular+build@19.1.1_@angu_5cd6b3085b9f53655a442b950631221f\node_modules\@angular\build\src\tools\vite\middlewares\ssr-middleware.js:26:38
上午10:49:31 [vite] Pre-transform error: Failed to resolve import "./chunk-LPMLDZGR.js" from ".angular/vite-root/ssrtest/main.js". Does the file exist?
  Plugin: vite:import-analysis
  File: C:/Project/ssrtest/.angular/vite-root/ssrtest/main.js:6:31
  14 |    __spreadValues({
  15 |      path: "",
  16 |      loadChildren: () => import("./chunk-LPMLDZGR.js")
     |                                 ^
  17 |    }, false ? { \u0275entryName: "src/app/test/lazy.route.ts" } : {})
  18 |  ];
上午10:49:31 [vite] Internal server error: Failed to resolve import "./chunk-LPMLDZGR.js" from ".angular/vite-root/ssrtest/main.js". Does the file exist?
  Plugin: vite:import-analysis
  File: C:/Project/ssrtest/.angular/vite-root/ssrtest/main.js:6:31
  14 |    __spreadValues({
  15 |      path: "",
  16 |      loadChildren: () => import("./chunk-LPMLDZGR.js")
     |                                 ^
  17 |    }, false ? { \u0275entryName: "src/app/test/lazy.route.ts" } : {})
  18 |  ];
      at TransformPluginContext._formatError (file:///C:/Project/ssrtest/node_modules/.pnpm/vite@6.0.7_@types+node@18.1_7931a348c589a4516c328719e7197a02/node_modules/vite/dist/node/chunks/dep-BJP6rrE_.js:47397:41)
      at TransformPluginContext.error (file:///C:/Project/ssrtest/node_modules/.pnpm/vite@6.0.7_@types+node@18.1_7931a348c589a4516c328719e7197a02/node_modules/vite/dist/node/chunks/dep-BJP6rrE_.js:47392:16)
      at normalizeUrl (file:///C:/Project/ssrtest/node_modules/.pnpm/vite@6.0.7_@types+node@18.1_7931a348c589a4516c328719e7197a02/node_modules/vite/dist/node/chunks/dep-BJP6rrE_.js:45642:23)
      at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
      at async file:///C:/Project/ssrtest/node_modules/.pnpm/vite@6.0.7_@types+node@18.1_7931a348c589a4516c328719e7197a02/node_modules/vite/dist/node/chunks/dep-BJP6rrE_.js:45761:39

Minimal Reproduction

Steps to reproduce the issue:

1. Create a new Angular project with SSR using version 19.1.0 or 19.1.1
2. Configure routes using loadChildren
3. Run the server
4. Change component HTML template
5. Observe the error in the terminal.

Reproduction project: https://github.com/Ruisi-Lu/angular19.1-lazyload-route-bug-reproduction-

Exception or Error

Your Environment

Angular CLI: 19.1.1
Node: 20.18.1
Package Manager: pnpm 10.0.0
OS: win32 x64

Angular: 19.1.1
... animations, cli, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, platform-server
... router, ssr

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1901.1
@angular-devkit/build-angular   19.1.1
@angular-devkit/core            19.1.1
@angular-devkit/schematics      19.1.1
@schematics/angular             19.1.1
rxjs                            7.8.1
typescript                      5.7.3
zone.js                         0.15.0

Anything else relevant?

No response

[pisxid]

Angular CLI: 19.1.1
Node: 22.13.0
Package Manager: npm 11.0.0
OS: win32 x64

Angular: 19.1.1
... animations, cli, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1901.1
@angular-devkit/build-angular   19.1.1
@angular-devkit/core            19.1.1
@angular-devkit/schematics      19.1.1
@angular/cdk                    19.1.0
@angular/material               19.1.0
@schematics/angular             19.1.1
rxjs                            7.8.1
typescript                      5.7.3
zone.js                         0.15.0

Also happens without SSR. Hot reload is not working

[anisabboud]

Still seeing this issue with @angular/cli 19.1.3 released yesterday.

[vite] Internal server error: ɵgetOrCreateAngularServerApp is not a function
      at /.../node_modules/@angular/build/src/tools/vite/middlewares/ssr-middleware.js:26:38 (x4)

(Happens randomly when saving a file.)

[alan-agius4]

@anisabboud, the issue you're reporting is unrelated to this one. Please submit a new issue with the steps to reproduce. Thank you.

[enzofrnt]

I'm still getting this error :

ɵgetOrCreateAngularServerApp is not a function

It appears when I add something to any component of my app.

[Ahmed-Makled]

any soltuions ?

[chiragmer77]

any soltuions ?

[adnanibrahem]

try this:
constructor(@Inject(DOCUMENT) document: Document) { }

[Kgermando]

04:00:03 [vite] Internal server error: ɵgetOrCreateAngularServerApp is not a function
at C:\Users\germa\Documents\DEVELOPER\ANGULAR\PROJECTS\optimatincorporation\node_modules@angular\build\src\tools\vite\middlewares\ssr-middleware.js:30:38
at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
04:00:06 [vite] Internal server error: ɵgetOrCreateAngularServerApp is not a function
at C:\Users\germa\Documents\DEVELOPER\ANGULAR\PROJECTS\optimatincorporation\node_modules@angular\build\src\tools\vite\middlewares\ssr-middleware.js:30:38
at process.processTicksAndRejections (node:internal/process/task_queues:105:5) (x2)

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