croniter: complete stubs (#9584)

stubs/croniter/@tests/stubtest_allowlist.txt

@@ -1,5 +0,0 @@
-# missing from stub
-croniter.croniter.EXPANDERS
-croniter.croniter.HashExpander
-croniter.croniter.VALID_LEN_EXPRESSION
-croniter.croniter.timedelta_to_seconds

stubs/croniter/croniter/croniter.pyi

@@ -1,11 +1,22 @@
 import datetime
-from _typeshed import Self
+from _typeshed import ReadableBuffer, Self
+from collections import OrderedDict
 from collections.abc import Iterator
-from typing import Any
+from re import Match, Pattern
+from typing import Any, overload
 from typing_extensions import Literal, TypeAlias
 
 _RetType: TypeAlias = type[float | datetime.datetime]
 
+step_search_re: Pattern[str]
+only_int_re: Pattern[str]
+star_or_int_re: Pattern[str]
+special_weekday_re: Pattern[str]
+hash_expression_re: Pattern[str]
+VALID_LEN_EXPRESSION: list[int]
+
+def timedelta_to_seconds(td: datetime.timedelta) -> float: ...
+
 class CroniterError(ValueError): ...
 class CroniterBadTypeRangeError(TypeError): ...
 class CroniterBadCronError(CroniterError): ...
@@ -83,3 +94,42 @@ def croniter_range(
     exclude_ends: bool = ...,
     _croniter: type[croniter] | None = ...,
 ) -> Iterator[Any]: ...
+
+class HashExpander:
+    cron: croniter
+    def __init__(self, cronit: croniter) -> None: ...
+    @overload
+    def do(
+        self,
+        idx: int,
+        hash_type: Literal["r"],
+        hash_id: None = None,
+        range_end: int | None = None,
+        range_begin: int | None = None,
+    ) -> int: ...
+    @overload
+    def do(
+        self, idx: int, hash_type: str, hash_id: ReadableBuffer, range_end: int | None = None, range_begin: int | None = None
+    ) -> int: ...
+    @overload
+    def do(
+        self,
+        idx: int,
+        hash_type: str = "h",
+        *,
+        hash_id: ReadableBuffer,
+        range_end: int | None = None,
+        range_begin: int | None = None,
+    ) -> int: ...
+    def match(self, efl: object, idx: object, expr: str, hash_id: object = None, **kw: object) -> Match[str] | None: ...
+    def expand(
+        self,
+        efl: object,
+        idx: int,
+        expr: str,
+        hash_id: ReadableBuffer | None = None,
+        match: Match[str] | None | Literal[""] = "",
+        **kw: object,
+    ) -> str: ...
+
+EXPANDERS: OrderedDict[str, HashExpander]