from typing import List


def load_file(file_path: str) -> List[str]:
    """
    Load given text file into list of string.
    Args: 
        file_path: file path
    Returns: flat list of string
    """
    res = []
    with open(file_path, 'r') as fp:
        for line in fp:
            if line:
                res.append(line.strip())
    return res