Secondary entry-point package.json files in APF require mainFields resolution (in Vitest) #45326
Description
Which @angular/* package(s) are the source of the bug?
core, router, Don't known / other
Is this a regression?
No - but not sure
Description
I'm trying to get unit test working with vite test. I've ran into an issue when importing testing modules
Error: Failed to resolve entry for package "@angular/core/testing". The package may have incorrect main/module/exports specified in its package.json: Failed to resolve entry for package "@angular/core/testing". The package may have incorrect main/module/exports specified in its package.json.
This also applies to the router module.
Please provide a link to a minimal reproduction of the bug
https://github.com/Jordan-Hall/vite-angular-template
Please provide the exception or error you saw
No response
Please provide the environment you discovered this bug in (run ng version)
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/ \ _ __ __ _ _ _| | __ _ _ __ / ___| | |_ _|
/ △ \ | '_ \ / _` | | | | |/ _` | '__| | | | | | |
/ ___ \| | | | (_| | |_| | | (_| | | | |___| |___ | |
/_/ \_\_| |_|\__, |\__,_|_|\__,_|_| \____|_____|___|
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Angular CLI: 13.1.4
Node: 16.13.0
Package Manager: npm 8.4.0
OS: win32 x64
Angular: 13.1.3
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router
Package Version
---------------------------------------------------------
@angular-devkit/architect 0.1301.4
@angular-devkit/build-angular 13.1.4
@angular-devkit/core 13.1.4
@angular-devkit/schematics 13.1.4
@angular/cli 13.1.4
@schematics/angular 13.1.4
rxjs 7.4.0
typescript 4.3.5
Anything else?
This projects uses NX and prototype of an angular cite plugin.