from typing import TYPE_CHECKING
# Type stubs for lazy imports
if TYPE_CHECKING:
from .profile import BrowserProfile
from .session import BrowserSession
# Lazy imports mapping for heavy browser components
_LAZY_IMPORTS = {
'BrowserProfile': ('.profile', 'BrowserProfile'),
'BrowserSession': ('.session', 'BrowserSession'),
}
def __getattr__(name: str):
"""Lazy import mechanism for heavy browser components."""
if name in _LAZY_IMPORTS:
module_path, attr_name = _LAZY_IMPORTS[name]
try:
from importlib import import_module
# Use relative import for current package
full_module_path = f'browser_use.browser{module_path}'
module = import_module(full_module_path)
attr = getattr(module, attr_name)
# Cache the imported attribute in the module's globals
globals()[name] = attr
return attr
except ImportError as e:
raise ImportError(f'Failed to import {name} from {full_module_path}: {e}') from e
raise AttributeError(f"module '{__name__}' has no attribute '{name}'")
__all__ = [
'BrowserSession',
'BrowserProfile',
]
