Log (b0.B0_std.Log)

type level =

val level : unit -> level

val set_level : level -> unit

val pp_level : level Fmt.t

val level_to_string : level -> string

val level_of_string : string -> (level, string) result

type (!'a, !'b) msgf =
  (?header:string -> ('a, Format.formatter, unit, 'b) format4 -> 'a) ->
  'b

type !'a log = ('a, unit) msgf -> unit

val msg : level -> 'a log

val quiet : 'a log

val app : 'a log

val err : 'a log

val warn : 'a log

val info : 'a log

val debug : 'a log

val kmsg : (unit -> 'b) -> level -> ('a, 'b) msgf -> 'b

val if_error : 
  ?level:level ->
  ?header:string ->
  use:'a ->
  ('a, string) result ->
  'a

val if_error' : 
  ?level:level ->
  ?header:string ->
  use:'a ->
  ('a, string) result ->
  ('a, 'b) result

val if_error_pp : 
  ?level:level ->
  ?header:string ->
  'b Fmt.t ->
  use:'a ->
  ('a, 'b) result ->
  'a

val if_error_pp' : 
  ?level:level ->
  ?header:string ->
  'b Fmt.t ->
  use:'a ->
  ('a, 'b) result ->
  ('a, 'b) result

val time : 
  ?level:level ->
  ('a -> (('b, Format.formatter, unit, 'a) format4 -> 'b) -> 'a) ->
  (unit -> 'a) ->
  'a

val spawn_tracer : level -> Os.Cmd.spawn_tracer

val err_count : unit -> int

val warn_count : unit -> int

type kmsg = {

}

val kmsg_nop : kmsg

val kmsg_default : kmsg

val set_kmsg : kmsg -> unit