Switching to es2015 compile target dropped code coverage #15742
Description
🐞 Bug report
Command (mark with an x)
- [ ] new
- [ ] build
- [ ] serve
- [x] test
- [ ] e2e
- [ ] generate
- [ ] add
- [ ] update
- [ ] lint
- [ ] xi18n
- [ ] run
- [ ] config
- [ ] help
- [ ] version
- [ ] doc
Is this a regression?
Yes, the previous version in which this bug was not present was: ....Description
Switching to es2015 compile target in tsconfig.json dropped our code coverage by ~10%. We are uploading lvoc report to sonarqube.
Does anyone else discovered this by switching to diffrential loading
🔬 Minimal Reproduction
🔥 Exception or Error
🌍 Your Environment
Angular CLI: 8.3.3
Node: 12.3.1
OS: win32 x64
Angular: 8.2.7
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router, service-worker
Package Version------------------------------------------------------------
@angular-devkit/architect 0.803.3
@angular-devkit/build-angular 0.803.5
@angular-devkit/build-optimizer 0.803.5
@angular-devkit/build-webpack 0.803.5
@angular-devkit/core 8.3.3
@angular-devkit/schematics 8.3.3
@angular/cdk 8.1.2
@angular/cli 8.3.3
@angular/flex-layout 8.0.0-beta.26
@angular/material 8.1.3
@angular/material-moment-adapter 8.1.3
@angular/pwa 0.801.3
@ngtools/webpack 8.3.5
@schematics/angular 8.3.3
@schematics/update 0.803.3
rxjs 6.5.3
typescript 3.5.3
webpack 4.39.2
Anything else relevant?