Module Rhythm.FeatureFront
type ('ds, 'el) fastGetFirst = | SlowGetFirst| GetFirstExn of 'ds -> 'el
type ('ds, 'el) fastAddFirst = | SlowAddFirst| AddFirst of 'el -> 'ds -> 'ds
type ('ds, 'el) fastRemoveFirst = | SlowRemoveFirst| RemoveFirstExn of 'ds -> 'ds
module type Config = sig ... end