SpawnOptions.orphanAfterMs

Have tmux end the program, and remove its pane unless keep is set, this many milliseconds after this process stops renewing a lease on it: after it exits or dies without Program.kill . A live process renews the lease every third of this period. At least 1000; 60000 by default. null takes no lease, for a program meant to outlive this process. Renewals run on the event loop, so a stall longer than this, such as a debugger paused at a breakpoint, ends the program too; raise it, or pass null , there.