# types.ProgramExit.signalCode

- **Module:** types
- **Package:** libtmux
- **Language:** TypeScript
- **Kind:** property
- **Source:** https://github.com/libtmux/libtmux-ts/blob/ad09eaef7ffff40f510989ee0695852c44a31576/packages/libtmux/src/types.ts#L659
- **Page:** https://libtmux.org/en/ts/latest/reference/types-programexit-signalcode/

The signal that ended the process, such as `"SIGKILL"`, or null.