Function runtime

packages/effect/src/FiberMap.ts:863–888

(self: FiberMap<K, A, E>)

  never,
  R
> = <K, A, E>(self: FiberMap<K, A, E>) => <R>() =>
  Effect.map(
    Effect.context<R>(),
    (services) => {
      const runFork = Effect.runForkWith(services)
      return <XE extends E, XA extends A>(
        key: K,
        effect: Effect.Effect<XA, XE, R>,
        options?:
          | Effect.RunOptions & {
            readonly onlyIfMissing?: boolean | undefined
            readonly propagateInterruption?: boolean | undefined
          }
          | undefined
      ) => {
        if (self.state._tag === "Closed") {
          return constInterruptedFiber()
        } else if (options?.onlyIfMissing === true && hasUnsafe(self, key)) {
          return constInterruptedFiber()
        }
        const fiber = runFork(effect, options)
        setUnsafe(self, key, fiber, options)
        return fiber
      }
    }
  )

/**
 * Captures the current runtime and returns a function for running effects in