Error When Running ng serve Since Version 18.1.0-next.1 : Pre-transform error: Failed to load url ./main.server.mjs (resolved id: ./main.server.mjs). Does the file exist

[naveedahmed1]

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

Since version 18.1.0-next.1 I am receiving the below error when running ng serve, whereas ng serve --configuration production seems to be working fine.

9:37:49 pm [vite] Pre-transform error: Failed to load url ./main.server.mjs (resolved id: ./main.server.mjs). Does the file exist?

Below is my package.json file:

"dependencies": {
    "@angular/animations": "18.1.0-next.3",
    "@angular/cdk": "18.1.0-next.3",
    "@angular/common": "18.1.0-next.3",
    "@angular/compiler": "18.1.0-next.3",
    "@angular/core": "18.1.0-next.3",
    "@angular/fire": "18.0.1",
    "@angular/forms": "18.1.0-next.3",
    "@angular/google-maps": "18.1.0-next.3",
    "@angular/material": "18.1.0-next.3",
    "@angular/platform-browser": "18.1.0-next.3",
    "@angular/platform-browser-dynamic": "18.1.0-next.3",
    "@angular/platform-server": "18.1.0-next.3",
    "@angular/pwa": "18.1.0-next.3",
    "@angular/router": "18.1.0-next.3",
    "@angular/service-worker": "18.1.0-next.3",
    "@fingerprintjs/fingerprintjs": "3.4.0",
    "@ngx-pwa/local-storage": "18.0.0",
    "@swimlane/ngx-charts": "20.5.0",
    "@zootools/email-spell-checker": "1.12.0",
    "d3-shape": "1.3.7",
    "dayjs": "^1.11.9",
    "easy-speech": "^2.3.1",
    "event-source-polyfill": "1.0.31",
    "file-saver": "2.0.5",
    "firebase": "10.12.2",
    "ng-recaptcha": "13.2.1",
    "ng2-adsense": "14.0.0",
    "ng2-ckeditor": "1.3.7",
    "ngx-img-cropper": "14.0.1",
    "ngx-infinite-scroll": "18.0.0",
    "ngx-stripe": "18.1.0",
    "rxjs": "~7.8.0",
    "screenfull": "5.0.2",
    "tslib": "^2.3.0",
    "zone.js": "~0.14.3"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "18.1.0-next.3",
    "@angular/cli": "18.1.0-next.3",
    "@angular/compiler-cli": "18.1.0-next.3",
    "@cloudflare/workers-types": "4.20240405.0",
    "@miniflare/tre": "3.0.0-next.14",
    "@types/express": "^4.17.17",
    "@types/jasmine": "~5.1.0",
    "@types/node": "^18.18.0",
    "@types/webappsec-credential-management": "^0.6.5",
    "concat": "3.0.0",
    "html-minifier-terser": "^5.1.1",
    "jasmine-core": "~5.1.0",
    "karma": "~6.4.0",
    "karma-chrome-launcher": "~3.2.0",
    "karma-coverage": "~2.2.0",
    "karma-jasmine": "~5.1.0",
    "karma-jasmine-html-reporter": "~2.1.0",
    "typescript": "~5.4.5",
    "wrangler": "^3.48.0"
  }

Minimal Reproduction

@alan-agius4 you can reproduce it in the private repo I have shared earlier.

Exception or Error

`9:37:49 pm [vite] Pre-transform error: Failed to load url ./main.server.mjs (resolved id: ./main.server.mjs). Does the file exist?`

Your Environment

Angular CLI: 18.1.0-next.3
Node: 20.12.2
Package Manager: npm 10.6.0
OS: win32 x64

Angular: 18.1.0-next.3
... animations, cdk, cli, common, compiler, compiler-cli, core
... forms, google-maps, material, platform-browser
... platform-browser-dynamic, platform-server, pwa, router
... service-worker

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1801.0-next.3
@angular-devkit/build-angular   18.1.0-next.3
@angular-devkit/core            18.0.2
@angular-devkit/schematics      18.0.2
@angular/fire                   18.0.1
@schematics/angular             18.0.2
rxjs                            7.8.1
typescript                      5.4.5
zone.js                         0.14.4

Anything else relevant?

No response

[naveedahmed1]

@alan-agius4 is it fixed it 18.1.0-rc.0 ? I tried this version and still face the same error [vite] Pre-transform error: Failed to load url ./main.server.mjs (resolved id: ./main.server.mjs). Does the file exist?

[alan-agius4]

@naveedahmed1, yes and I am no longer able to replicate.

[naveedahmed1]

Have you tried it on Windows machine?

[alan-agius4]

I was able to replicate the issue on Windows and have submitted a pull request to address it: #27946

[naveedahmed1]

Thank you so much Alan!

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