def rename_imports_and_app_name(file_path: str | Path, old_name: str, new_name: str):
    """Rename imports the file using string replacement as well as app_name in rxconfig.py.

    Args:
        file_path: The file to process.
        old_name: The old name to replace.
        new_name: The new name to use.
    """
    file_path = Path(file_path)
    content = file_path.read_text()

    # Replace `from old_name.` or `from old_name` with `from new_name`
    content = re.sub(
        rf"\bfrom {re.escape(old_name)}(\b|\.|\s)",
        lambda match: f"from {new_name}{match.group(1)}",
        content,
    )

    # Replace `import old_name` with `import new_name`
    content = re.sub(
        rf"\bimport {re.escape(old_name)}\b",
        f"import {new_name}",
        content,
    )

    # Replace `app_name="old_name"` in rx.Config
    content = re.sub(
        rf'\bapp_name\s*=\s*["\']{re.escape(old_name)}["\']',
        f'app_name="{new_name}"',
        content,
    )

    # Replace positional argument `"old_name"` in rx.Config
    content = re.sub(
        rf'\brx\.Config\(\s*["\']{re.escape(old_name)}["\']',
        f'rx.Config("{new_name}"',
        content,
    )

    file_path.write_text(content)
Rename imports the file using string replacement as well as app_name in rxconfig.py.

    Args:
        file_path: The file to process.
        old_name: The old name to replace.
        new_name: The new name to use.
    
reflex/utils/prerequisites.py