--- /dev/null
+from typing import Any, Sequence, Tuple, TypeVar
+
+_T = TypeVar("_T")
+_Mismatch = Tuple[_T, _T, int]
+
+_MAX_LENGTH: int
+_PLACEHOLDER_LEN: int
+_MIN_BEGIN_LEN: int
+_MIN_END_LEN: int
+_MIN_COMMON_LEN: int
+_MIN_DIFF_LEN: int
+
+def _shorten(s: str, prefixlen: int, suffixlen: int) -> str: ...
+def _common_shorten_repr(*args: str) -> tuple[str]: ...
+def safe_repr(obj: object, short: bool = ...) -> str: ...
+def strclass(cls: type) -> str: ...
+def sorted_list_difference(expected: Sequence[_T], actual: Sequence[_T]) -> tuple[list[_T], list[_T]]: ...
+def unorderable_list_difference(expected: Sequence[_T], actual: Sequence[_T]) -> tuple[list[_T], list[_T]]: ...
+def three_way_cmp(x: Any, y: Any) -> int: ...
+def _count_diff_all_purpose(actual: Sequence[_T], expected: Sequence[_T]) -> list[_Mismatch[_T]]: ...
+def _count_diff_hashable(actual: Sequence[_T], expected: Sequence[_T]) -> list[_Mismatch[_T]]: ...