val sf : ('a, Stdlib.Format.formatter, unit, string) Stdlib.format4 -> 'aval (//) : string -> string -> stringval with_open_out : string -> (Stdlib.out_channel -> unit) -> unitval with_open_in : string -> (Stdlib.in_channel -> 'a) -> 'bval read_lines_from_file : string -> string listval write_file : string -> contents:string -> unitval project_root : stringval yaml_to_string : Yaml.value -> stringval write_yaml : ?header:string -> string -> Yaml.value -> unitval range : int -> int -> int list