Function reconcile

packages/core/src/system-context/index.ts:218–226

(value: SystemContext, previous: Snapshot)

/** Reconciles current source values with one active generation. */
export function reconcile(value: SystemContext, previous: Snapshot): Effect.Effect<ReconcileResult> {
  return observe(value).pipe(
    Effect.map((entries): ReconcileResult => {
      const result = reconcileObservation(entries, previous)
      if (result._tag === "Unchanged" || result._tag === "Updated") return result
      return replaceObservation(entries, previous)
    }),
  )
}

function reconcileObservation(
  entries: ReadonlyArray<Entry>,