Hello,

I don't know if it's intentional or not but given this structure:

* base.tsconfig.json
* aFolder/
      * tsconfig.json (extends base.tsconfig.json)

Actual behavior:
Now running tsc in aFolder:

• if I have an outDir option in the base.tsconfig.json defined as ./dist it will create the dist folder in the root folder

* base.tsconfig.json
* aFolder/
      * tsconfig.json (extends base.tsconfig.json)
* dist/

• if I have an outDir option in the aFolder/tsconfig.json defined as ./dist it will create the dist folder under the aFolder

* base.tsconfig.json
* aFolder/
      * tsconfig.json (extends base.tsconfig.json)
      * dist/

• if I don't specify any outDir files are output in the aFolder folder

Expected behavior:
I would expect the dist folder to be created relatively to the path of the main tsconfig used by typescript (here tsconfig.json) regardless if outDir has been specified in the parent or child tsconfig.json