Extensions don't allow scalar / primitive values

[egandro]

@Extension('x-internal','true')

Creates:

"x-internal": "true" as expected.

@Extension('x-internal',true) a primitive type like a bool / int won't be serialized

[WoH]

This could be supported, as the spec says:

The value can be null, a primitive, an array or an object. Can have any valid JSON format value.

[mhyeun]

Hi! I found the tsoa library to be really useful and was hoping to get into contributing to open-source projects.

Could I take on this issue?

[WoH]

Sure! No need to ask, but esp. issues marked as "help wanted" are great candidates for PRs