Karma builder logs a lot of file changes with "builderMode: application"

[cexbrayat]

Command

test

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 running ng test in watch mode, updating a file triggers a re-run of the tests as expected, but sometimes logs a lot of file changes.

Minimal Reproduction

Create a new project with npx @angular/[email protected] new karma-assets --defaults --no-routing.
Add "builderMode": "application", to angular.json in the karmaoptions.
Launch ng test
Clear the template app.component.html and check the logs.

Exception or Error

31 10 2024 07:31:27.111:INFO [filelist]: Changed file "/Users/cedric/Code/temp/karma-assets/dist/test-out/c45dfc31-7cf6-461e-b12e-14642f1f29ac/app.component.spec.js.map".
31 10 2024 07:31:27.112:INFO [filelist]: Changed file "/Users/cedric/Code/temp/karma-assets/dist/test-out/c45dfc31-7cf6-461e-b12e-14642f1f29ac/styles.css.map".
31 10 2024 07:31:27.112:INFO [filelist]: Changed file "/Users/cedric/Code/temp/karma-assets/dist/test-out/c45dfc31-7cf6-461e-b12e-14642f1f29ac/styles.css".
31 10 2024 07:31:27.113:INFO [filelist]: Changed file "/Users/cedric/Code/temp/karma-assets/dist/test-out/c45dfc31-7cf6-461e-b12e-14642f1f29ac/init_test_bed.js".
31 10 2024 07:31:27.113:INFO [filelist]: Changed file "/Users/cedric/Code/temp/karma-assets/dist/test-out/c45dfc31-7cf6-461e-b12e-14642f1f29ac/app.component.spec.js".
31 10 2024 07:31:27.113:INFO [filelist]: Changed file "/Users/cedric/Code/temp/karma-assets/dist/test-out/c45dfc31-7cf6-461e-b12e-14642f1f29ac/app.component.css.map".
31 10 2024 07:31:27.114:INFO [filelist]: Changed file "/Users/cedric/Code/temp/karma-assets/dist/test-out/c45dfc31-7cf6-461e-b12e-14642f1f29ac/polyfills.js".
31 10 2024 07:31:27.116:INFO [filelist]: Changed file "/Users/cedric/Code/temp/karma-assets/dist/test-out/c45dfc31-7cf6-461e-b12e-14642f1f29ac/init_test_bed.js.map".
31 10 2024 07:31:27.122:INFO [filelist]: Changed file "/Users/cedric/Code/temp/karma-assets/dist/test-out/c45dfc31-7cf6-461e-b12e-14642f1f29ac/chunk-K7Q6MHAJ.js".
31 10 2024 07:31:27.128:INFO [filelist]: Changed file "/Users/cedric/Code/temp/karma-assets/dist/test-out/c45dfc31-7cf6-461e-b12e-14642f1f29ac/polyfills.js.map".
31 10 2024 07:31:27.155:INFO [filelist]: Changed file "/Users/cedric/Code/temp/karma-assets/dist/test-out/c45dfc31-7cf6-461e-b12e-14642f1f29ac/chunk-K7Q6MHAJ.js.map".

Your Environment

Angular CLI: 19.0.0-rc.0
Node: 20.13.1
Package Manager: npm 9.7.1
OS: darwin arm64

Angular: 19.0.0-rc.0
... animations, cli, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, router

Package Version

@angular-devkit/architect 0.1900.0-rc.0
@angular-devkit/build-angular 19.0.0-rc.0
@angular-devkit/core 19.0.0-rc.0
@angular-devkit/schematics 19.0.0-rc.0
@schematics/angular 19.0.0-rc.0
rxjs 7.8.1
typescript 5.6.3
zone.js 0.15.0

Anything else relevant?

No response

[jkrems]

Thanks for the great reports! I'm hoping that we can get the fixes for this and #28756 / #28754 into the next RC release.

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