/**
 * IEventBridge — port interface for receiving and normalizing platform events.
 *
 * Platform adapters implement this to translate native event streams
 * into CanonicalEvents that the core event handler can process uniformly.
 *
 * Must NOT import from @opencode-ai/plugin or @opencode-ai/sdk.
 */
import type { CanonicalEvent, CanonicalEventType } from "../types.ts";
export type { CanonicalEvent, CanonicalEventType };
export type CanonicalEventHandler = (event: CanonicalEvent) => void | Promise<void>;
/**
 * Port interface for platform event bridging.
 *
 * The event bridge translates platform-native events into canonical events
 * and dispatches them to registered handlers. This decouples the core
 * event processing logic from the platform's event delivery mechanism.
 */
export interface IEventBridge {
    /**
     * Subscribe to canonical events.
     * Returns an unsubscribe function.
     */
    on(handler: CanonicalEventHandler): () => void;
    /**
     * Subscribe to a specific canonical event type.
     * Returns an unsubscribe function.
     */
    onType(type: CanonicalEventType, handler: CanonicalEventHandler): () => void;
    /**
     * Normalize a platform-native event into a CanonicalEvent.
     * Used internally by adapters and externally for testing.
     */
    normalize(rawEvent: unknown): CanonicalEvent;
    /**
     * Emit a canonical event to all subscribers.
     * Platform adapters call this after normalizing native events.
     */
    emit(event: CanonicalEvent): Promise<void>;
}
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