Map (melange.Js.Map)

type t('k, 'v);

let make: unit => t('k, 'v);

let fromArray: array(('k, 'v)) => t('k, 'v);

let toArray: t('k, 'v) => array(('k, 'v));

let size: t('k, 'v) => int;

let has: t('k, 'v) => key:'k => bool;

let get: t('k, 'v) => key:'k => option('v);

let set: t('k, 'v) => key:'k => value:'v => t('k, 'v);

let clear: t('k, 'v) => unit;

let delete: t('k, 'v) => key:'k => bool;

let forEach: f:('v => 'k => t('k, 'v) => unit) => t('k, 'v) => unit;

let keys: t('k, 'v) => Js.iterator('k);

let values: t('k, 'v) => Js.iterator('v);

let entries: t('k, 'v) => Js.iterator(('k, 'v));