[Components](https://oods-foundry.com/components) / lifecycle

# StateTransitionEvent

Describes a recorded transition between lifecycle states.

Generated from @oods/foundry 0.10.1

- Categories

  lifecycle

- Contexts

  timeline

- Readiness

  `react-and-vue`

## Playground

This component's contract doesn't list typed props, so the playground shows its documented example.

Documented example `StateTransitionEvent` : mount and declared input triggers, Declared history order, from/to states, actor and reason remain visible; showActor/showReason suppress their respective details. No history is invented..

The render follows the page's theme switch: light, dark or high contrast. Both frameworks render the same example.

The real StateTransitionEvent, live

React

## State transitions

1. **Draft → Active**

   Sep 1, 2026, 12:00 PM

   Actor: operator-1

   Reason: Approved

Vue

## State transitions

1. **Draft → Active**

   Sep 1, 2026, 12:00 PM

   Actor: operator-1

   Reason: Approved

## Code

The documented example. HTML is the markup the React component renders for it, which @oods/component-styles styles.

**React**

```
import { StateTransitionEvent } from '@oods/components-react';
import '@oods/component-styles/css';

const history = [
  {
    "from_state": "draft",
    "to_state": "active",
    "transitioned_at": "2026-09-01T12:00:00Z",
    "actor_id": "operator-1",
    "reason": "Approved"
  }
];

export function Example() {
  return (
    <StateTransitionEvent
      history={history}
    />
  );
}
```

## Props, slots and events

Contract version 1.1.0. Types are from the React declarations in @oods/components-react.

Props

| Prop | Type | Required | Documented example |
| - | - | - | - |
| `title` | `string \| undefined` | no | |
| `history` | `readonly unknown[] \| undefined` | no | `[{"from_state":"draft","to_state":"active","transitioned_at":"2026-09-01T12:00:00Z","actor_id":"operator-1","reason":"Approved"}]` |
| `status` | `string \| null \| undefined` | no | |
| `showActor` | `boolean \| undefined` | no | |
| `showReason` | `boolean \| undefined` | no | |

### Slots

none

### Events

none

## States

empty, populated

## Accessibility

- Role

  `article`

- How it gets its name

  `aria-label` on `[data-oods-component="StateTransitionEvent"]`

### Keyboard

The contract lists no keyboard behaviour.

### Obligations in the contract

- Visible text exposes values without relying on color
- Named semantic container or noninteractive span

Declared history order, from/to states, actor and reason remain visible; showActor/showReason suppress their respective details. No history is invented; with no history the card renders nothing (s223-m01).

## Tokens

The token roles this component reads.

- `surface.panel`
- `text.body`

## Readiness

The evidence recorded for this component, with its label.

`react-and-vue`: catalog_list gives this label when the React and Vue components have complete readiness evidence, but the sweep's generated apps don't use the component in both.

Readiness evidence

| Evidence | React | Vue |
| - | - | - |
| state | implemented-evidence-complete | implemented-evidence-complete |
| versioned contract | passed | passed |
| target implementation | passed | passed |
| package export | passed | passed |
| public declaration | passed | passed |
| dependency closure | passed | passed |
| framework scenario | passed | passed |
| accessibility | verified | verified |
| interaction | not-applicable | not-applicable |
| visual themes | verified | verified |

StateTransitionEvent presents declared trait values and owns no focusable control or consumer action.

## Use your own

You can replace this component with your own React or Vue component. Map it, and generated code imports yours at the exact version you name. A contract report, run in a real browser, lists what your component met, what it didn't, and what wasn't checked.

The `component_map` call, with the parts in angle brackets yours to fill:

```
{
  "action": "create",
  "apply": true,
  "externalSystem": "<your design system>",
  "externalComponent": "<YourStateTransitionEvent>",
  "oodsTraits": [
    "<trait names>"
  ],
  "substitution": {
    "component": "StateTransitionEvent",
    "react": {
      "package": "<your-package>/react",
      "version": "<exact version>",
      "export": "<YourStateTransitionEvent>"
    },
    "vue": {
      "package": "<your-package>/vue",
      "version": "<exact version>",
      "export": "<YourStateTransitionEvent>"
    }
  }
}
```

## How this page was made

Generated at build from the published data, each source with the hash of what was read. [The page's manifest](https://oods-foundry.com/components/state-transition-event/manifest.json).

- **Contract**: `@oods/component-contracts@0.10.1 componentContracts.StateTransitionEvent` `sha256:af7d6e5d37b0…`
- **Documented example**: `@oods/component-contracts@0.10.1 sharedScenarios StateTransitionEvent` `sha256:cf71e5afd59b…`
- **Catalog entry (catalog_list)**: `generated/0.10.1/system/catalog.json StateTransitionEvent` `sha256:afd8bd0d4cc3…`
- **React readiness**: `@oods/components-react@0.10.1 readiness StateTransitionEvent` `sha256:7c60e52399a6…`
- **Vue readiness**: `@oods/components-vue@0.10.1 readiness StateTransitionEvent` `sha256:b525649e52f5…`
- **Prop types**: `generated/0.10.1/components/prop-types.json StateTransitionEvent` `sha256:4da78ffeaf2f…`