Function createDragSource

static/components.ts:1222–1231

(
    layout: GoldenLayout,
    element: HTMLElement | JQuery,
    factory: DragSourceFactory<K>,
)

 * definitions don't properly type the second parameter as accepting a function.
 */
export function createDragSource<K extends keyof ComponentStateMap>(
    layout: GoldenLayout,
    element: HTMLElement | JQuery,
    factory: DragSourceFactory<K>,
): GoldenLayout.EventEmitter {
    // TODO(#7808): Fix GoldenLayout TypeScript definitions to eliminate 'as any' cast
    // Both the factory parameter type and return type are incorrectly defined
    const result = layout.createDragSource(element, factory as any) as any;
    return result._dragListener;
}

/**
 * Validation function for component states.