ChromeOS Personalization features interact differently with different user types. It is important for feature development to consider how the different user types will be affected.
see: //components/user_manager/user_type.h
For a more in depth explanation, see:
Profiles, Sessions, Users, and more for ChromeOS Personalization
tsconfig.json using helper script. Please follow the help doc in the header of the helper script.${PATH_TO_CHROMIUM}/src/.git/info/exclude and add these lines/ash/webui/personalization_app/resources/tsconfig.json /chrome/test/data/webui/chromeos/personalization_app/tsconfig.json