Function matchSimple

packages/effect/src/internal/concurrency.ts:33–54

(
  concurrency: Concurrency | undefined,
  sequential: () => Effect<A, E, R>,
  concurrent: () => Effect<A, E, R>
)

/** @internal */
export const matchSimple = <A, E, R>(
  concurrency: Concurrency | undefined,
  sequential: () => Effect<A, E, R>,
  concurrent: () => Effect<A, E, R>
): Effect<A, E, R> => {
  switch (concurrency) {
    case undefined:
      return sequential()
    case "unbounded":
      return concurrent()
    case "inherit":
      return core.fiberRefGetWith(
        core.currentConcurrency,
        (concurrency) =>
          concurrency === "unbounded" || concurrency > 1 ?
            concurrent() :
            sequential()
      )
    default:
      return concurrency > 1 ? concurrent() : sequential()
  }
}