medusa-store/www/apps/docs/content/references/services/interfaces/IEventBusService.mdx

---
displayed_sidebar: servicesSidebar
---

import ParameterTypes from "@site/src/components/ParameterTypes"

# IEventBusService

## Methods

### emit

**emit**<`T`\>(`event`, `data`, `options?`): `Promise`<`unknown`\>

<ParameterTypes parameters={[
  {
    "name": "T",
    "type": "`object`",
    "description": "",
    "optional": false,
    "defaultValue": "",
    "expandable": false,
    "children": []
  }
]} />

#### Parameters

<ParameterTypes parameters={[
  {
    "name": "event",
    "type": "`string`",
    "description": "",
    "optional": false,
    "defaultValue": "",
    "expandable": false,
    "children": []
  },
  {
    "name": "data",
    "type": "`T`",
    "description": "",
    "optional": false,
    "defaultValue": "",
    "expandable": false,
    "children": []
  },
  {
    "name": "options",
    "type": "`unknown`",
    "description": "",
    "optional": true,
    "defaultValue": "",
    "expandable": false,
    "children": []
  }
]} />

#### Returns

`Promise`<`unknown`\>

<ParameterTypes parameters={[
  {
    "name": "Promise",
    "type": "`Promise`<`unknown`\\>",
    "optional": false,
    "defaultValue": "",
    "description": "",
    "expandable": false,
    "children": []
  }
]} />

___

### subscribe

**subscribe**(`eventName`, `subscriber`, `context?`): [`IEventBusService`](IEventBusService.mdx)

#### Parameters

<ParameterTypes parameters={[
  {
    "name": "eventName",
    "type": "`string` \\| `symbol`",
    "description": "",
    "optional": false,
    "defaultValue": "",
    "expandable": false,
    "children": []
  },
  {
    "name": "subscriber",
    "type": "[`Subscriber`](../types/Subscriber.mdx)",
    "description": "",
    "optional": false,
    "defaultValue": "",
    "expandable": false,
    "children": []
  },
  {
    "name": "context",
    "type": "[`SubscriberContext`](../types/SubscriberContext.mdx)",
    "description": "",
    "optional": true,
    "defaultValue": "",
    "expandable": false,
    "children": []
  }
]} />

#### Returns

[`IEventBusService`](IEventBusService.mdx)

<ParameterTypes parameters={[
  {
    "name": "IEventBusService",
    "type": "[`IEventBusService`](IEventBusService.mdx)",
    "optional": false,
    "defaultValue": "",
    "description": "",
    "expandable": false,
    "children": []
  }
]} />

___

### unsubscribe

**unsubscribe**(`eventName`, `subscriber`, `context?`): [`IEventBusService`](IEventBusService.mdx)

#### Parameters

<ParameterTypes parameters={[
  {
    "name": "eventName",
    "type": "`string` \\| `symbol`",
    "description": "",
    "optional": false,
    "defaultValue": "",
    "expandable": false,
    "children": []
  },
  {
    "name": "subscriber",
    "type": "[`Subscriber`](../types/Subscriber.mdx)",
    "description": "",
    "optional": false,
    "defaultValue": "",
    "expandable": false,
    "children": []
  },
  {
    "name": "context",
    "type": "[`SubscriberContext`](../types/SubscriberContext.mdx)",
    "description": "",
    "optional": true,
    "defaultValue": "",
    "expandable": false,
    "children": []
  }
]} />

#### Returns

[`IEventBusService`](IEventBusService.mdx)

<ParameterTypes parameters={[
  {
    "name": "IEventBusService",
    "type": "[`IEventBusService`](IEventBusService.mdx)",
    "optional": false,
    "defaultValue": "",
    "description": "",
    "expandable": false,
    "children": []
  }
]} />

___

### withTransaction

**withTransaction**(`transactionManager?`): [`IEventBusService`](IEventBusService.mdx)

#### Parameters

<ParameterTypes parameters={[
  {
    "name": "transactionManager",
    "type": "`EntityManager`",
    "description": "",
    "optional": true,
    "defaultValue": "",
    "expandable": false,
    "children": []
  }
]} />

#### Returns

[`IEventBusService`](IEventBusService.mdx)

<ParameterTypes parameters={[
  {
    "name": "IEventBusService",
    "type": "[`IEventBusService`](IEventBusService.mdx)",
    "optional": false,
    "defaultValue": "",
    "description": "",
    "expandable": false,
    "children": []
  }
]} />