> ## Documentation Index
> Fetch the complete documentation index at: https://staging-docs.orderly.network/llms.txt
> Use this file to discover all available pages before exploring further.

# Orderly network core.EventEmitter

[Orderly SDKs](/sdks/tech-doc/README) / [Modules](/sdks/tech-doc/modules) / [@orderly.network/core](/sdks/tech-doc/modules/orderly_network_core) / EventEmitter

# Namespace: EventEmitter

[@orderly.network/core](/sdks/tech-doc/modules/orderly_network_core).EventEmitter

## Table of contents

### Interfaces

* [EventEmitterStatic](/sdks/tech-doc/interfaces/orderly_network_core.EventEmitter.EventEmitterStatic)
* [ListenerFn](/sdks/tech-doc/interfaces/orderly_network_core.EventEmitter.ListenerFn)

### Type Aliases

* [ArgumentMap](/sdks/tech-doc/modules/orderly_network_core.EventEmitter#argumentmap)
* [EventArgs](/sdks/tech-doc/modules/orderly_network_core.EventEmitter#eventargs)
* [EventListener](/sdks/tech-doc/modules/orderly_network_core.EventEmitter#eventlistener)
* [EventNames](/sdks/tech-doc/modules/orderly_network_core.EventEmitter#eventnames)
* [ValidEventTypes](/sdks/tech-doc/modules/orderly_network_core.EventEmitter#valideventtypes)

### Variables

* [EventEmitter](/sdks/tech-doc/modules/orderly_network_core.EventEmitter#eventemitter)

## Type Aliases

### ArgumentMap

Ƭ **ArgumentMap**\<`T`>: \{ \[K in keyof T]: T\[K] extends Function ? Parameters\<T\[K]> : T\[K] extends any\[] ? T\[K] : any\[] }

#### Type parameters

| Name | Type             |
| :--- | :--------------- |
| `T`  | extends `object` |

#### Defined in

node\_modules/.pnpm/eventemitter3\@5.0.1/node\_modules/eventemitter3/index.d.ts:109

***

### EventArgs

Ƭ **EventArgs**\<`T`, `K`>: `Parameters`\<[`EventListener`](/sdks/tech-doc/modules/orderly_network_core.EventEmitter#eventlistener)\<`T`, `K`>>

#### Type parameters

| Name | Type                                                                                                  |
| :--- | :---------------------------------------------------------------------------------------------------- |
| `T`  | extends [`ValidEventTypes`](/sdks/tech-doc/modules/orderly_network_core.EventEmitter#valideventtypes) |
| `K`  | extends [`EventNames`](/sdks/tech-doc/modules/orderly_network_core.EventEmitter#eventnames)\<`T`>     |

#### Defined in

node\_modules/.pnpm/eventemitter3\@5.0.1/node\_modules/eventemitter3/index.d.ts:126

***

### EventListener

Ƭ **EventListener**\<`T`, `K`>: `T` extends `string` | `symbol` ? (...`args`: `any`\[]) => `void` : (...`args`: [`ArgumentMap`](/sdks/tech-doc/modules/orderly_network_core.EventEmitter#argumentmap)\<`Exclude`\<`T`, `string` | `symbol`>>\[`Extract`\<`K`, keyof `T`>]) => `void`

#### Type parameters

| Name | Type                                                                                                  |
| :--- | :---------------------------------------------------------------------------------------------------- |
| `T`  | extends [`ValidEventTypes`](/sdks/tech-doc/modules/orderly_network_core.EventEmitter#valideventtypes) |
| `K`  | extends [`EventNames`](/sdks/tech-doc/modules/orderly_network_core.EventEmitter#eventnames)\<`T`>     |

#### Defined in

node\_modules/.pnpm/eventemitter3\@5.0.1/node\_modules/eventemitter3/index.d.ts:117

***

### EventNames

Ƭ **EventNames**\<`T`>: `T` extends `string` | `symbol` ? `T` : keyof `T`

#### Type parameters

| Name | Type                                                                                                  |
| :--- | :---------------------------------------------------------------------------------------------------- |
| `T`  | extends [`ValidEventTypes`](/sdks/tech-doc/modules/orderly_network_core.EventEmitter#valideventtypes) |

#### Defined in

node\_modules/.pnpm/eventemitter3\@5.0.1/node\_modules/eventemitter3/index.d.ts:105

***

### ValidEventTypes

Ƭ **ValidEventTypes**: `string` | `symbol` | `object`

`object` should be in either of the following forms:

```
interface EventTypes {
  'event-with-parameters': any[]
  'event-with-example-handler': (...args: any[]) => void
}
```

#### Defined in

node\_modules/.pnpm/eventemitter3\@5.0.1/node\_modules/eventemitter3/index.d.ts:103

## Variables

### EventEmitter

• `Const` **EventEmitter**: [`EventEmitterStatic`](/sdks/tech-doc/interfaces/orderly_network_core.EventEmitter.EventEmitterStatic)

#### Defined in

node\_modules/.pnpm/eventemitter3\@5.0.1/node\_modules/eventemitter3/index.d.ts:131