In the development environment I can debug with the Chrome source tab , but in the prod server I use the dist folder content after running ng build --prod. This
In Angualr CLI 6 options seems to be changed as
ng build --prod --source-map
Or else you can enable source maps in angular.json by setting the sourceMap:true in production configurations
"configurations": {
"production": {
"optimization": true,
"outputHashing": "all",
**"sourceMap": false,**
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