Mapbox "fitBounds" handling

As per https://github.com/plotly/plotly.R/blob/9ee548023bba6d68dd953f46485b2e611026766b/inst/htmlwidgets/plotly.js#L206-L220

I believe the if(!args) check should be changed (or the parameter for args should default to null or some other calculated default, not {}) as it currently causes an "e is undefined" error in mapbox (where e is the 2nd parameter).

I've got around it by explicitly providing a mapbox = list(_fitBounds = list(c(xmin, ymin), c(xmax, ymax)), options = list()) entry in my plotly::layout call.

This also serves as a reminder that the fitBounds doesn't seem to work for restyle either.

Inizia dalle righe 206–220 di inst/htmlwidgets/plotly.js, concentrandoti sul valore predefinito dell’argomento fitBounds e sulla chiamata a Mapbox che produce l’errore relativo al secondo parametro undefined. Riproduci il problema con e senza un elenco esplicito di opzioni mapbox, quindi verifica che fitBounds funzioni anche durante restyle.