import { RootRuntime, type EnvironmentLayers, type InvalidationPlan, type ModuleRuntime, type ProcessInvalidationPlan, type RootResourceInstaller, type RuntimeConfigDocument, type RuntimeEnvironment, type ConfigDocumentPort } from '@zhin.js/runtime';
export interface RootHostOptions {
    readonly projectRoot: string;
    readonly config?: RuntimeConfigDocument | ConfigDocumentPort;
    readonly environment?: RuntimeEnvironment;
    readonly environmentVariables?: EnvironmentLayers;
    readonly modules?: ModuleRuntime;
    readonly installResources?: RootResourceInstaller;
    readonly watch?: boolean;
    onRestartRequired?(plan: ProcessInvalidationPlan): void | Promise<void>;
    onError?(error: unknown): void | Promise<void>;
    onPlan?(plan: InvalidationPlan): void | Promise<void>;
    /**
     * Generation commit 回调（包括初始 start 与后续 HMR/config patch）。
     * 用于 Console `hmr:reload` SSE 推送。
     */
    onGenerationCommit?(generation: number): void;
}
export interface RootHostSnapshot {
    readonly generation: number;
    readonly plugins: number;
    readonly capabilities: number;
    readonly projections: number;
}
/** Owns one Root process lifecycle; callers own signals and restart policy. */
export declare class RootHost {
    #private;
    readonly runtime: RootRuntime;
    constructor(options: RootHostOptions);
    start(): Promise<RootHostSnapshot>;
    stop(): Promise<void>;
}
export declare function describeSnapshot(snapshot: RootRuntime['snapshot']): RootHostSnapshot;
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