Promise (melange.Js.Promise)

type t(+'a);

type error;

let make: 
  (resolve:Js.Fn.arity1(('a => unit)) =>
    reject:Js.Fn.arity1((exn => unit)) =>
    unit) =>
  t('a);

let resolve: 'a => t('a);

let reject: exn => t('a);

let all: array(t('a)) => t(array('a));

let all2: (t('a0), t('a1)) => t(('a0, 'a1));

let all3: (t('a0), t('a1), t('a2)) => t(('a0, 'a1, 'a2));

let all4: (t('a0), t('a1), t('a2), t('a3)) => t(('a0, 'a1, 'a2, 'a3));

let all5: 
  (t('a0), t('a1), t('a2), t('a3), t('a4)) =>
  t(('a0, 'a1, 'a2, 'a3, 'a4));

let all6: 
  (t('a0), t('a1), t('a2), t('a3), t('a4), t('a5)) =>
  t(('a0, 'a1, 'a2, 'a3, 'a4, 'a5));

let race: array(t('a)) => t('a);

let then_: ('a => t('b)) => t('a) => t('b);

let catch: (error => t('a)) => t('a) => t('a);