Class: EventEmitter

EventEmitter()

Lightweight browser-compatible event emitter. Provides publish/subscribe functionality for MIDI events without external dependencies. Implements standard event emitter pattern: register listeners with on(), emit events with emit(), remove listeners with off(). Listener cleanup is automatic via returned unsubscribe functions.

Constructor

new EventEmitter()

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Classes

EventEmitter

Methods

emit(event, data)

Emit an event
Parameters:
Name Type Description
event string Event name
data * Event data
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off(event, handler)

Remove an event listener
Parameters:
Name Type Description
event string Event name
handler function Event handler function
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on(event, handler) → {function}

Register an event listener
Parameters:
Name Type Description
event string Event name
handler function Event handler function
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Returns:
Unsubscribe function
Type
function

once(event, handler)

Register a one-time event listener
Parameters:
Name Type Description
event string Event name
handler function Event handler function
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removeAllListeners(eventopt)

Remove all event listeners
Parameters:
Name Type Attributes Description
event string <optional>
 Optional event name to clear specific event
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