def create_environment() -> Environment:
"""Create the Jinja environment containing the functionality to render
templates."""
env = Environment()
# define the filterfunc decorator and patch it into the environment
# so we can define filters using a decorator
def filterfunc(target, func):
target.filters[func.__name__] = func
return func
env.filterfunc = types.MethodType(filterfunc, env)
return env
