Function sidePanelWidthChanged

sidePanelWidthChanged(listenerId, fn): void
JMap.Application.Event.UI.on.sidePanelWidthChanged

This event is triggered when the side panel width changes.
Parameters
- listenerId: string
  Your listener id (must be unique)
- fn: ((params) => void)
  Your listener function
  - - (params): void
    - Parameters
      params: JAppUISidePanelWidthChangedEventParams
      Returns void
Returns void
Example
```
// log a message in the console when the side panel width changes
JMap.Application.Event.UI.on.sidePanelWidthChanged(
  "custom-side-panel-width-changed",
  params => console.log(`New panel width ${params.width}"`)
)
```