Returns the value of the --package-root flag passed to the executable used to run the script in this isolate. This is the directory in which Dart packages are looked up.
If there is no --package-root flag, then the empty string is returned.
Returns the value of the --package-root flag passed to the executable used to run the script in this isolate. This is the directory in which Dart packages are looked up.
If there is no --package-root flag, then the empty string is returned.