---
class: ember
---
# StateMachine
```hbs
<StateMachine
@chart={{xstateStateChartObject}}
as |fsm|>
</StateMachine>
```
`<StateMachine />` is a renderless component that eases rendering of different states
from within templates using XState State Machine and Statechart objects.
**Please note**: This component is currently a gradual replacement for
StateChart, which has a less ergonmic interface. Guard and Action component are
currently omitted due to a preference to use entries to define those instead of
components (which is WIP)
### Arguments
| Argument/Attribute | Type | Default | Description |
| --- | --- | --- | --- |
| `chart` | `object` | | An xstate statechart/state machine object |
| `initial` | `String` | The initial value of the state chart itself | The initial state of the machine/chart (defaults to whatever is defined on the object itself) |
The component currently yields 1 contextual components:
- `<fsm.State />`: Used for rendering matching certain states ([also see State Component](../state/README.mdx))
and 2 further objects:
- `fsm.dispatch`: An action to dispatch an xstate event
- `fsm.state`: The state object itself for usage in the `state-matches` helper
### Example
```hbs
<StateMachine
@chart={{xstateStateChartObject}}
as |fsm|>
<fsm.State @matches="idle">
Currently Idle
</fsm.State>
<fsm.State @matches="loading">
Currently Loading
</fsm.State>
<fsm.State @matches={{array 'loading' 'idle'}}>
Idle and loading
<button disabled={{state-matches fsm.state "loading"}} onclick={{action fsm.dispatch "START"}}>Load</button>
</fsm.State>
</StateMachine>
```
### See
- [Component Source Code](./index.js)
- [Template Source Code](./index.hbs)
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