In our pipelines we found that sonarscanner appends tsconfig.json behind the tsconfig extends property.
One of our apps refers to a package within the monorepo in their tsconfig.json;
{
"extends": "@monorepo/tsconfig/base.json"
}
This resulting in the following with SonarScanner; WARN: Could not find tsconfig.json: /node_modules/@monorepo/tsconfig/base.json/tsconfig.json; falling back to an empty configuration.