vanilla-native-federation/fesm2022/registry.mjs.map

A lightweight **runtime micro frontend orchestrator** that loads micro frontends built with native federation into any web page. It can cache dependencies across page reloads, making it perfect for traditional server-rendered hosts (PHP, Java, Rails, etc.

{
  "version": 3,
  "sources": ["../../src/lib/2.app/flows/registry/setup-registry.ts"],
  "sourcesContent": ["import type {\n  NFEventConsumer,\n  NFEventData,\n  NFEventProvider,\n  NFEventUnsubscribe,\n} from '../../../1.domain/registry/event.contract';\nimport type { ForManagingEvents } from 'lib/2.app/driver-ports/registry/for-managing-events.port';\nimport type { NFEventRegistryConfig } from 'lib/2.app/config/registry.contract';\n\nexport function createRegistry(opts: NFEventRegistryConfig): ForManagingEvents {\n  // resources\n  const resources = new Map<string, unknown>();\n  const pending = new Map<string, Set<NFEventConsumer<any>>>();\n\n  // events\n  const events = new Map<string, NFEventData[]>();\n  const listeners = new Map<string, Set<NFEventConsumer<NFEventData<any>>>>();\n  const recentlyUsedEvents = new Set<string>();\n\n  const REMOVE_EVENTS = Math.ceil(opts.maxEvents * opts.removePercentage);\n\n  /**\n   * RESOURCE: Register a resource by name. If the resource is a provider function, it is\n   * invoked to obtain the actual resource. All callbacks waiting for this\n   * resource via `onReady` are invoked once the resource is registered.\n   */\n  const register = async <T>(type: string, resource: T | NFEventProvider<T>): Promise<void> => {\n    const value =\n      typeof resource === 'function' ? await (resource as NFEventProvider<T>)() : resource;\n\n    resources.set(type, value);\n\n    const callbacks = pending.get(type);\n    if (callbacks) {\n      pending.delete(type);\n      callbacks.forEach(cb => cb(value));\n    }\n  };\n\n  /**\n   * RESOURCE: Subscribe to the readiness of a resource. If the resource is already\n   * registered, the callback is invoked immediately. Otherwise, the callback\n   * is invoked once the resource is registered.\n   */\n  const onReady = <T>(type: string, callback: NFEventConsumer<T>): NFEventUnsubscribe => {\n    const existing = resources.get(type);\n    if (existing !== undefined) {\n      callback(existing as T);\n      return () => {};\n    }\n\n    let callbacks = pending.get(type);\n    if (!callbacks) {\n      callbacks = new Set();\n      pending.set(type, callbacks);\n    }\n    callbacks.add(callback);\n\n    return () => {\n      callbacks!.delete(callback);\n      if (callbacks!.size === 0) {\n        pending.delete(type);\n      }\n    };\n  };\n\n  /**\n   * EVENT: Subscribe to events of a specific type. The callback is invoked for all\n   * past events of that type, and for all future events.\n   */\n  const on = <T>(type: string, callback: NFEventConsumer<NFEventData<T>>): NFEventUnsubscribe => {\n    const history = events.get(type);\n    const historyCopy = history ? [...history] : null;\n\n    let typeListeners = listeners.get(type);\n    if (!typeListeners) {\n      typeListeners = new Set();\n      listeners.set(type, typeListeners);\n    }\n    typeListeners.add(callback);\n\n    if (historyCopy && historyCopy.length > 0) {\n      queueMicrotask(() => {\n        historyCopy.forEach(event => callback(event));\n      });\n    }\n\n    return () => {\n      typeListeners!.delete(callback);\n      if (typeListeners!.size === 0) {\n        listeners.delete(type);\n      }\n    };\n  };\n\n  /**\n   * Emit an event of a specific type with associated data. The event is stored\n   * in the history for that type, and all listeners subscribed to that type are\n   * invoked with the new event. If the number of stored events exceeds\n   * the maximum, the oldest events are removed based on the configured\n   * removal percentage. If the number of event types exceeds the maximum,\n   * the oldest event type and its history are removed.\n   */\n  const emit = <T>(type: string, data: T): void => {\n    const event: NFEventData<T> = {\n      data,\n      timestamp: Date.now(),\n    };\n\n    recentlyUsedEvents.delete(type);\n    recentlyUsedEvents.add(type);\n\n    if (recentlyUsedEvents.size > opts.maxStreams) {\n      const oldest = recentlyUsedEvents.values().next().value;\n      if (oldest) {\n        recentlyUsedEvents.delete(oldest);\n        events.delete(oldest);\n      }\n    }\n\n    let history = events.get(type) || [];\n    history.push(event);\n\n    if (history.length > opts.maxEvents) {\n      history = history.slice(-(opts.maxEvents - REMOVE_EVENTS));\n    }\n\n    events.set(type, history);\n\n    const typeListeners = listeners.get(type);\n    if (typeListeners && typeListeners.size > 0) {\n      typeListeners.forEach(listener => listener(event));\n    }\n  };\n\n  const clear = (type?: string): void => {\n    if (type) {\n      // Clear event-related data\n      events.delete(type);\n      listeners.delete(type);\n\n      // Clear resource-related data\n      resources.delete(type);\n      pending.delete(type);\n\n      recentlyUsedEvents.delete(type);\n    } else {\n      // Clear all data\n      events.clear();\n      listeners.clear();\n      pending.clear();\n      resources.clear();\n      recentlyUsedEvents.clear();\n    }\n  };\n\n  return () => ({\n    register,\n    onReady,\n    emit,\n    on,\n    clear,\n  });\n}\n"],
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