# session.Session.unsetEnvironment

- **Module:** session.Session
- **Package:** libtmux
- **Language:** TypeScript
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-ts/blob/3fe1ca654b81b8cbf4a13b777a001a3298c87a6f/packages/libtmux/src/session.ts#L231
- **Page:** https://libtmux.org/en/ts/latest/reference/session-session-unsetenvironment/

```
session.Session.unsetEnvironment(name: : string) -> Promise<void>
```

Drop a variable from this session's environment entirely.

## Example

```ts
await session.unsetEnvironment("EDITOR");
```