code: """A module containing `numpy`-specific plugins for mypy."""
  
  import typing as t
  
  import numpy as np
  
  try:
      import mypy.types
      from mypy.types import Type
      from mypy.plugin import Plugin, AnalyzeTypeContext
      _HookFunc = t.Callable[[AnalyzeTypeContext], Type]
      MYPY_EX: t.Optional[ModuleNotFoundError] = None
  except ModuleNotFoundError as ex:
      MYPY_EX = ex
  
  __all__: t.List[str] = []
  
  
  def _get_precision_dict() -> t.Dict[str, str]:
      names = [
          ("_NBitByte", np.byte),
          ("_NBitShort", np.short),
          ("_NBitIntC", np.intc),
          ("_NBitIntP", np.intp),
          ("_NBitInt", np.int_),
          ("_NBitLongLong", np.longlong),
  
          ("_NBitHalf", np.half),
          ("_NBitSingle", np.single),
          ("_NBitDouble", np.double),
          ("_NBitLongDouble", np.longdouble),
      ]
      ret = {}
      for name, typ in names:
          n: int = 8 * typ().dtype.itemsize
          ret[f'numpy.typing._nbit.{name}'] = f"numpy._{n}Bit"
      return ret
  
  
  #: A dictionary mapping type-aliases in `numpy.typing._nbit` to
  #: concrete `numpy.typing.NBitBase` subclasses.
  _PRECISION_DICT = _get_precision_dict()
  
  
  def _hook(ctx: "AnalyzeTypeContext") -> "Type":
      """Replace a type-alias with a concrete ``NBitBase`` subclass."""
      typ, _, api = ctx
      name = typ.name.split(".")[-1]
      name_new = _PRECISION_DICT[f"numpy.typing._nbit.{name}"]
      return api.named_type(name_new)
  
  
  if MYPY_EX is None:
      class _NumpyPlugin(Plugin):
          """A plugin for assigning platform-specific `numpy.number` precisions."""
  
          def get_type_analyze_hook(self, fullname: str) -> t.Optional[_HookFunc]:
              if fullname in _PRECISION_DICT:
                  return _hook
              return None
  
      def plugin(version: str) -> t.Type[_NumpyPlugin]:
          """An entry-point for mypy."""
          return _NumpyPlugin
  
  else:
      def plugin(version: str) -> t.Type["_NumpyPlugin"]:
          """An entry-point for mypy."""
          raise MYPY_EX
  