Function none

packages/effect/src/Optic.ts:1472–1478

()

 * @since 4.0.0
 */
export function none<A>(): Prism<Option.Option<A>, undefined> {
  const run = runRefinement(Option.isNone, { expected: "a None value" })
  return makePrism(
    (s) => Result.map(run(s), () => undefined),
    () => Option.none()
  )
}

/**
 * Prism that focuses on the success value of a `Result`.