Crypto.Key_usageA KeyUsage: an operation a cryptoKey may be used for.
val to_js : t -> Js.js_string Js.tval of_js : Js.js_string Js.t -> tval list_to_js : t list -> Js.js_string Js.t Js.js_array Js.tval list_of_js : Js.js_string Js.t Js.js_array Js.t -> t list