OverlayInputOrFactory
OverlayInputOrFactory =
OverlayInput| ((props) =>OverlayConfig)
Defined in: asset.ts:554
A value accepted by createOverlays: a static input or a config
factory. The factory arm uses a never parameter so a factory with any
concrete props type is assignable (function parameters are contravariant);
OverlayControllerFor then recovers the real props type per key.