Unit testing in browser for NativeScript fails because of .tns. files - unit-testing

Question

I have an Angular flavoured Nativescript project, which must be tested with "vanila" Jasmine, in a browser (so not in mobile) with ng test.
By default, with "naked" tests, it works. But the problem is, if I try to test/import anything, that has a ".tns" alternative, in some cases it loads that, and the build fails.
My problem is similar to this thread but there were no good solution described there.
So for instance:
I have two files:
app.component.tns.ts
app.component.ts
and I try to import it for testing in app.component.spec.ts:
import {AppComponent} from "#src/app/app.component";
it loads the .tns. file, and the build fails, as it cannot load the mobile-specific libraries.
ERROR in ./src/app/app.component.tns.ts
Module not found: Error: Can't resolve 'nativescript-ui-sidedrawer' in '/home/..../src/app'
resolve 'nativescript-ui-sidedrawer' in '/home/...../src/app'
Parsed request is a module
using description file: /home/...../src/package.json (relative path: ./app)
Field 'browser' doesn't contain a valid alias configuration
resolve as module
...
# ./src/app/app.component.tns.ts 25:35-72
# ./src/app/app.module.spec.ts
# ./src sync \.spec\.ts$
# ./src/test.ts
is there any solution to "remove" the .tns. files, just as if I were running a simple ng serve?
update: My tsconfig.spec.json should exclude these files, but it does not work either ...
"exclude": [
"**/*.tns.ts",
"**/*.android.ts",
"**/*.ios.ts"
]
}

Answer 1

it seems the problem was with tsconfig.json. Specificly this part:
"compilerOptions": {
...
"paths": {
"#src/*": [
"src/*.android.ts",
"src/*.ios.ts",
"src/*.tns.ts",
"src/*.web.ts",
"src/*.ts"
]
},
As this was extended by the tsconfig.spec.json.
I modified the tsconfig.spec.json to this:
{
"compilerOptions": {
"target": "es5",
"declaration": false,
"module": "esnext",
"moduleResolution": "node",
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"skipLibCheck": true,
"typeRoots": [
"node_modules/#types"
],
"lib": [
"es2017",
"dom",
"es6",
"es2015.iterable"
],
"baseUrl": ".",
"resolveJsonModule": true,
"esModuleInterop": true,
"paths": {
"#src/*": [
"src/*.ts"
]
},
"outDir": "../out-tsc/spec",
"types": [
"jasmine",
"node"
]
},
"files": [
"src/test.ts",
"src/polyfills.ts"
],
"include": [
"**/*.spec.ts",
"**/*.d.ts"
],
"exclude": [
"**/*.tns.ts",
"**/*.android.ts",
"**/*.ios.ts"
]
}
and now the tests run, and the correct components are imported.