Function product

repos/effect/packages/effect/src/Option.ts:1634–1635

(self: Option<A>, that: Option<B>)

    if (Symbol.iterator in input) {
      const out: Array<Option<any>> = []
      for (const o of (input as Iterable<Option<any>>)) {
        if (isNone(o)) {
          return none()
        }
        out.push(o.value)