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application builder's dev-server doesn't work with imports of html files from ts #34166

Description

@imirkin

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 configuring a file loader for .html, the asset doesn't seem to get added to the list of files served by vite. This does work with ng build, as well as with the webpack builder's serve function, as well as with other filetypes (svg in the demo below).

Minimal Reproduction

https://stackblitz.com/edit/stackblitz-starters-ejbbdzyh?file=src%2Fmain.ts

See that the clicking on the SVG works fine (you get a giant purple square), but when clicking on the HTML link instead of the test file's contents you get what is, effectively, index.html. However if you do a ng build, the test.html will end up properly in the target directory.

Exception or Error

Request for HTML file "/media/test.html" was received but no asset found. Asset may be missing from build.

Your Environment

Angular CLI       : 22.2.0
Angular           : 22.2.0
Node.js           : 22.22.3
Package Manager   : npm 10.8.2
Operating System  : linux x64

┌───────────────────────────┬───────────────────┬───────────────────┐
│ Package                   │ Installed Version │ Requested Version │
├───────────────────────────┼───────────────────┼───────────────────┤
│ @angular/build            │ 22.2.0            │ ^22.2.0           │
│ @angular/cli              │ 22.2.0            │ ^22.2.0           │
│ @angular/common           │ 22.2.0            │ ^22.2.0           │
│ @angular/compiler         │ 22.2.0            │ ^22.2.0           │
│ @angular/compiler-cli     │ 22.2.0            │ ^22.2.0           │
│ @angular/core             │ 22.2.0            │ ^22.2.0           │
│ @angular/forms            │ 22.2.0            │ ^22.2.0           │
│ @angular/platform-browser │ 22.2.0            │ ^22.2.0           │
│ @angular/router           │ 22.2.0            │ ^22.2.0           │
│ rxjs                      │ 7.8.2             │ ^7.8.1            │
│ typescript                │ 6.0.3             │ ^6.0.3            │
│ zone.js                   │ 0.16.1            │ ^0.16.1           │
└───────────────────────────┴───────────────────┴───────────────────┘

Anything else relevant?

No response

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