Is the Dictionary type necessary?

[s1na]

The Input definition includes a Dictionary type, even though Dictionary doesn't seem to be used in the code and toBuffer doesn't explicitly handle it. The RLP reference hasn't mentioned anything about objects either. I was wondering if it can be removed, or there's a reason why it's there?

[alcuadrado]

I think Dictionary is not only not needed, but incorrect. Calling encode({a: 1123}) throws invalid type.

I believe it was added in e81acfd9571 when trying to solve #35. TS support for recursive types is non-obvious, and while googling about it I got to this comment by Anders Hejlsberg
which looks almost the same as the original types.ts. This was probably copy-pasted and accidentally left here.

[s1na]

Fixed via #74