Incorrect type spec of basic_rule()

[amarBitMan]

It gives the following error on the example given on Usage section:

The call ejson:to_json(P::[#person{name::[any(),...],birth_year::1967,projects::[]},...], [{'project', {'string', "name"}, {'number', "budget"}, {'boolean', "isSuccessful"}}, {'person', {'string', "name"}, {'number', "yearOfBirth"}, {'list', "projects"}}], [])
breaks the contract (term(), rule(), [any()]) -> {'ok',jsx:jsx_term()} | {'error',term()}