Function findTerminalCommand

findTerminalCommand(
cancellable?: Cancellable | null,
): Promise<TerminalCommandResolver | null>
Finds a terminal emulator to run commands in. Checks for GNOME Console (kgx), gnome-terminal, and xdg-terminal-exec in order.
Parameters
- cancellable: Cancellable | null = null
  Optional cancellable for aborting the operation.
Returns Promise<TerminalCommandResolver | null>
A function that generates the command line, or null if no suitable terminal is found.
Example: "Hello, World!" in a new terminal
```
const terminal = await findTerminalCommand();

if (terminal) {
    const argv = terminal(['echo', 'Hello, world!']);
    const [, pid] = GLib.spawn_async(null, argv, null, GLib.SpawnFlags.DEFAULT, null);
    GLib.spawn_close_pid(/** @type {GLib.Pid} */ (pid));
} else {
    printerr('No terminal emulators found');
}
```
- Defined in gjs-typelib-installer.js:644