Function replace

packages/core/src/system-context/index.ts:283–285

(value: SystemContext, previous: Snapshot)

/** Creates a complete replacement generation or blocks while admitted context is unavailable. */
export function replace(value: SystemContext, previous: Snapshot): Effect.Effect<ReplacementResult> {
  return observe(value).pipe(Effect.map((entries) => replaceObservation(entries, previous)))
}

function replaceObservation(entries: ReadonlyArray<Entry>, previous: Snapshot): ReplacementResult {
  if (entries.some((entry) => entry._tag === "Unavailable" && getSnapshot(previous, entry.key) !== undefined))