typing: matchers and senders

Leftover error that I cannot fix:

* https://github.com/python/mypy/issues/708

Leftover error that I am unsure of what to do:

* xml handlers are not properly typed

(it seems like nothing in slix is using it, considering a removal
 instead of adding an Union everywhere)

1 files changed, 5 insertions, 3 deletions

diff --git a/slixmpp/xmlstream/matcher/id.py b/slixmpp/xmlstream/matcher/id.py
index 44df2c18..e4e7ad4e 100644
--- a/slixmpp/xmlstream/matcher/id.py
+++ b/slixmpp/xmlstream/matcher/id.py
@@ -5,6 +5,7 @@
 # :copyright: (c) 2011 Nathanael C. Fritz
 # :license: MIT, see LICENSE for more details
 from slixmpp.xmlstream.matcher.base import MatcherBase
+from slixmpp.xmlstream.stanzabase import StanzaBase
 
 
 class MatcherId(MatcherBase):
@@ -13,12 +14,13 @@ class MatcherId(MatcherBase):
     The ID matcher selects stanzas that have the same stanza 'id'
     interface value as the desired ID.
     """
+    _criteria: str
 
-    def match(self, xml):
+    def match(self, xml: StanzaBase) -> bool:
         """Compare the given stanza's ``'id'`` attribute to the stored
         ``id`` value.
 
-        :param xml: The :class:`~slixmpp.xmlstream.stanzabase.ElementBase`
+        :param xml: The :class:`~slixmpp.xmlstream.stanzabase.StanzaBase`
                     stanza to compare against.
         """
-        return xml['id'] == self._criteria
+        return bool(xml['id'] == self._criteria)