new Emitter(logger)
Subset of node's Emitter class
Parameters:
| Name | Type | Description |
|---|---|---|
logger |
Object |
Optional logger instance. Must comply to the Console interface. |
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Methods
emit(eventName) → {boolean}
Synchronously calls each of the listeners registered for the event named eventName, in the order they were registered, passing the supplied arguments to each.
Parameters:
| Name | Type | Description |
|---|---|---|
eventName |
string |
The name of the event. |
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on(eventName, listener) → {Emitter}
Adds the listener function to the end of the listeners array for the event named eventName.
Parameters:
| Name | Type | Description |
|---|---|---|
eventName |
string |
The name of the event. |
listener |
function |
Listener fn that handles the evt. |
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once(eventName, listener) → {Emitter}
Adds a one time listener function for the event named eventName. The next time eventName is triggered, this listener is removed and then invoked.
Parameters:
| Name | Type | Description |
|---|---|---|
eventName |
string |
The name of the event. |
listener |
function |
Listener fn that handles the evt. |
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removeAllListeners(eventName) → {Emitter}
Removes all listeners, or those of the specified eventName.
Parameters:
| Name | Type | Description |
|---|---|---|
eventName |
string |
The name of the event. Optional if omitted all listeners will be removed. |
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removeListener(eventName, listener) → {Emitter}
Removes the specified listener from the listener array for the event named eventName.
Parameters:
| Name | Type | Description |
|---|---|---|
eventName |
string |
The name of the event. |
listener |
function |
Listener fn that handles the evt. |
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