terminalColumns property
int terminalColumnsGet the number of columns of the terminal.
If no terminal is attached to stdout, a StdoutException is thrown. See hasTerminal for more info.
Source
int get terminalColumns => _terminalColumns(_fd);
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/1.24.3/dart-io/Stdout/terminalColumns.html