Handling "undefined"

[snicol21]

Maybe this is by design, but I was surprised to learn that this:

import { merge } from "merge-anything"

const defaultTheme = {}
const theme = undefined

merge(defaultTheme, theme)

Returns undefined. Is this expected, maybe it is, but I was kind of expecting it to return {}. Am I right?

I would hate to have to handle this scenario like this everytime:

merge(defaultTheme, theme || {})