# session.Session.showEnvironment

- **Module:** session.Session
- **Package:** @libtmux/libtmux
- **Language:** TypeScript
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-ts/blob/2cb93308200da38a26b59876618116850f110607/packages/libtmux/src/session.ts#L197
- **Page:** https://libtmux.org/reference/ts/session-session-showenvironment/

```
session.Session.showEnvironment() -> Promise<ReadonlyMap<string, EnvironmentValue>>
```

Every variable in this session's environment.

A `null` value is tmux's `-NAME`: present, and marked for removal from any
process tmux starts.

## Example

```ts
const environment = await session.showEnvironment();
environment.get("EDITOR");
```