Function addFinalizer

packages/effect/src/internal/fiberRuntime.ts:1710–1739

(
  finalizer: (exit: Exit.Exit<unknown, unknown>) => Effect.Effect<X, never, R>
)

/* @internal */
export const addFinalizer = <X, R>(
  finalizer: (exit: Exit.Exit<unknown, unknown>) => Effect.Effect<X, never, R>
): Effect.Effect<void, never, R | Scope.Scope> =>
  core.withFiberRuntime(
    (runtime) => {
      const acquireRefs = runtime.getFiberRefs()
      const acquireFlags = runtimeFlags_.disable(runtime.currentRuntimeFlags, runtimeFlags_.Interruption)
      return core.flatMap(scope, (scope) =>
        core.scopeAddFinalizerExit(scope, (exit) =>
          core.withFiberRuntime((runtimeFinalizer) => {
            const preRefs = runtimeFinalizer.getFiberRefs()
            const preFlags = runtimeFinalizer.currentRuntimeFlags
            const patchRefs = FiberRefsPatch.diff(preRefs, acquireRefs)
            const patchFlags = runtimeFlags_.diff(preFlags, acquireFlags)
            const inverseRefs = FiberRefsPatch.diff(acquireRefs, preRefs)
            runtimeFinalizer.setFiberRefs(
              FiberRefsPatch.patch(patchRefs, runtimeFinalizer.id(), acquireRefs)
            )

            return ensuring(
              core.withRuntimeFlags(finalizer(exit) as Effect.Effect<X>, patchFlags),
              core.sync(() => {
                runtimeFinalizer.setFiberRefs(
                  FiberRefsPatch.patch(inverseRefs, runtimeFinalizer.id(), runtimeFinalizer.getFiberRefs())
                )
              })
            )
          })))
    }
  )

/* @internal */
export const daemonChildren = <A, E, R>(self: Effect.Effect<A, E, R>): Effect.Effect<A, E, R> => {