Caml_io (melange.Caml

let stdin: Caml_undefined_extern.t('a);

type out_channel;

let stdout: out_channel;

let stderr: out_channel;

let caml_ml_flush: out_channel => unit;

let caml_ml_output: out_channel => string => int => int => unit;

let caml_ml_output_char: out_channel => char => unit;

let caml_ml_out_channels_list: unit => list(out_channel);