util-extra

name enough

base/array

base/boolean

base/date

base/function

base/json

Json

base/never

throw_never

base/nil

base/null

is_null

base/number

base/object

base/promise

base/regexp

is_regexp

base/string

base/timer

base/undefined

is_undefined

data/model

data/optional

data/result

data/thunk