Function pruneRemovedPluginHooks

src/utils/plugins/loadPluginHooks.ts:179–207

()

 * which /reload-plugins awaits.
 */
export async function pruneRemovedPluginHooks(): Promise<void> {
  // Early return when nothing to prune — avoids seeding the loadAllPluginsCacheOnly
  // memoize in test/preload.ts beforeEach (which clears registeredHooks).
  if (!getRegisteredHooks()) return
  const { enabled } = await loadAllPluginsCacheOnly()
  const enabledRoots = new Set(enabled.map(p => p.path))

  // Re-read after the await: a concurrent loadPluginHooks() (hot-reload)
  // could have swapped STATE.registeredHooks during the gap. Holding the
  // pre-await reference would compute survivors from stale data.
  const current = getRegisteredHooks()
  if (!current) return

  // Collect plugin hooks whose pluginRoot is still enabled, then swap via
  // the existing clear+register pair (same atomic-pair pattern as
  // loadPluginHooks above). Callback hooks are preserved by
  // clearRegisteredPluginHooks; we only need to re-register survivors.
  const survivors: Partial<Record<HookEvent, PluginHookMatcher[]>> = {}
  for (const [event, matchers] of Object.entries(current)) {
    const kept = matchers.filter(
      (m): m is PluginHookMatcher =>
        'pluginRoot' in m && enabledRoots.has(m.pluginRoot),
    )
    if (kept.length > 0) survivors[event as HookEvent] = kept
  }

  clearRegisteredPluginHooks()
  registerHookCallbacks(survivors)
}

/**
 * Reset hot reload subscription state. Only for testing.