I believe based on the online library tester that this library fails to handle this valid TOML document:

[fruit.apple.texture]  # you can add sub-tables
smooth = true

[fruit]
apple.color = "red"
apple.taste.sweet = true

I haven't actually used this library outside of the browser, so all I got for you is a playground link: https://godbolt.org/z/T59E7d

Related: toml-lang/toml#771