# LibTmux::Workspace::Plan#preconditions

**Workspace Manager concept example** A working example of the core library. It can change without notice.

- **Module:** LibTmux::Workspace
- **Package:** libtmux-workspace
- **Language:** Ruby
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-ruby/blob/d8ce4bbee0ca7748a81929f81f7d8d07f8c51267/gems/libtmux-workspace/lib/libtmux/workspace/plan.rb#L11
- **Page:** https://libtmux.org/en/ruby/v0.1.0.alpha.3/workspace/reference/libtmux-workspace-plan-preconditions/

```
def preconditions: () -> ::Hash[::String, ::String?]
```

Returns the value of attribute preconditions.

Behavior contract: Workspace plans.