Function validate

src/debugpy/common/json.py:117–127

(value)

    assert not len(kwargs)

    def validate(value):
        if (optional and value == ()) or isinstance(value, classinfo):
            return value
        else:
            converted_value = _converter(value, classinfo)
            if converted_value:
                return converted_value

            if not optional and value == ():
                raise ValueError("must be specified")
            raise TypeError("must be " + " or ".join(t.__name__ for t in classinfo))

    return validate