# types.SetEnvironmentOptions

- **Module:** types
- **Package:** @libtmux/libtmux
- **Language:** TypeScript
- **Kind:** interface
- **Source:** https://github.com/libtmux/libtmux-ts/blob/2cb93308200da38a26b59876618116850f110607/packages/libtmux/src/types.ts#L481
- **Page:** https://libtmux.org/reference/ts/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`.