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**<TypeParameter T>(event, data, options?): Promise&#60;unknown&#62;`

<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&#60;unknown&#62;

<ParameterTypes parameters={[
  {
    "name": "Promise",
    "type": "Promise&#60;unknown&#62;",
    "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": []
  }
]} />