Made minor adjustments to a few annotations.

- Made int | str order consistent.
- The ParseResultMixin shim properties are now marked with t.Optional, since what they wrap can be None.

Author: Sachaa-Thanasius

src/rfc3986/builder.py

@@ -188,7 +188,7 @@ def add_host(self, host: str) -> "URIBuilder":
             fragment=self.fragment,
         )
 
-    def add_port(self, port: t.Union[str, int]) -> "URIBuilder":
+    def add_port(self, port: t.Union[int, str]) -> "URIBuilder":
         """Add port to the URI.
 
         .. code-block:: python

src/rfc3986/parseresult.py

@@ -64,17 +64,17 @@ def geturl(self) -> t.AnyStr:
         return self.unsplit()
 
     @property
-    def hostname(self) -> t.AnyStr:
+    def hostname(self) -> t.Optional[t.AnyStr]:
         """Shim to match the standard library."""
         return self.host
 
     @property
-    def netloc(self) -> t.AnyStr:
+    def netloc(self) -> t.Optional[t.AnyStr]:
         """Shim to match the standard library."""
         return self.authority
 
     @property
-    def params(self) -> t.AnyStr:
+    def params(self) -> t.Optional[t.AnyStr]:
         """Shim to match the standard library."""
         return self.query
 
@@ -210,7 +210,7 @@ def copy_with(
         scheme: t.Optional[str] = misc.UseExisting,
         userinfo: t.Optional[str] = misc.UseExisting,
         host: t.Optional[str] = misc.UseExisting,
-        port: t.Optional[str] = misc.UseExisting,
+        port: t.Optional[t.Union[int, str]] = misc.UseExisting,
         path: t.Optional[str] = misc.UseExisting,
         query: t.Optional[str] = misc.UseExisting,
         fragment: t.Optional[str] = misc.UseExisting,
@@ -316,7 +316,7 @@ def from_parts(
         scheme: t.Optional[str] = None,
         userinfo: t.Optional[str] = None,
         host: t.Optional[str] = None,
-        port: t.Optional[t.Union[str, int]] = None,
+        port: t.Optional[t.Union[int, str]] = None,
         path: t.Optional[str] = None,
         query: t.Optional[str] = None,
         fragment: t.Optional[str] = None,