Function makeWithFallback

packages/cli/src/internal/options.ts:1066–1075

(
  options: Options.Options<A>,
  effect: Effect.Effect<B, unknown, FileSystem.FileSystem | Path.Path | Terminal.Terminal>
)

}

const makeWithFallback = <A, B>(
  options: Options.Options<A>,
  effect: Effect.Effect<B, unknown, FileSystem.FileSystem | Path.Path | Terminal.Terminal>
): Options.Options<A | B> => {
  const op = Object.create(proto)
  op._tag = "WithFallback"
  op.options = options
  op.effect = effect
  return op
}

const modifySingle = (self: Instruction, f: (single: Single) => Single): Options.Options<any> => {
  switch (self._tag) {