import type { McpServerContribution } from "../mcp-servers.ts";
import type { WorkflowResourceProvider } from "./loader-resources.ts";
type PackageMcpServerSource = Pick<WorkflowResourceProvider, "getMcpServers">;
/**
 * MCP server contributions shared by every extension of one runtime generation.
 * Package-manifest servers come first; extension registrations replace them by name.
 */
export declare class McpServerRegistry {
    private readonly packageSources;
    private readonly registrations;
    private readonly listeners;
    /** Resource providers of the loaders whose extensions share this runtime. */
    addPackageSource(source: PackageMcpServerSource): void;
    /** Returns the registration it replaced so a rolled-back extension load can restore it. */
    register(contribution: McpServerContribution): McpServerContribution | undefined;
    restore(name: string, previous: McpServerContribution | undefined): void;
    list(): McpServerContribution[];
    subscribe(listener: () => void, options?: {
        consumer?: boolean;
    }): () => void;
    hasConsumers(): boolean;
    private notify;
}
export {};
//# sourceMappingURL=mcp-server-registry.d.ts.map