# types.SetEnvironmentOptions

- **Module:** types
- **Package:** libtmux
- **Language:** TypeScript
- **Kind:** interface
- **Source:** https://github.com/libtmux/libtmux-ts/blob/3fe1ca654b81b8cbf4a13b777a001a3298c87a6f/packages/libtmux/src/types.ts#L509
- **Page:** https://libtmux.org/en/ts/latest/reference/types-setenvironmentoptions/

Options for writing a tmux environment variable.

## Members

- `expandFormat` (property): Expand tmux format strings in the value, matching tmux's `-F`.
- `hidden` (property): Keep the variable out of `show-environment` output, matching tmux's `-h`.