import { type BrowserCachePolicyOptions } from '../models/asset-store.js';
import { type SippClient as SippClientShape, type BrowserEmbeddingRun, type BrowserTextRun, type ChatInput, type ChatOptions, type EmbedOptions, type EndpointDescriptor, type EndpointRef, type EngineEvent, type EngineObservability, type EngineState, type ModelStore, type QueryInput, type QueryOptions } from '../models/types.js';
export interface EngineModuleOptions {
    locateFile?: (path: string, prefix?: string) => string;
    [key: string]: unknown;
}
export interface SippClientOptions {
    moduleUrl?: string;
    wasmUrl?: string;
    pthreadModuleUrl?: string;
    pthreadWasmUrl?: string;
    wasmThreading?: 'single-thread' | 'pthread';
    moduleOptions?: EngineModuleOptions;
    maxModelBytes?: number;
    /** Browser OPFS directory used for the managed model registry and cached assets. */
    storageRoot?: string;
    /** Override browser OPFS split thresholds for large GGUF model files. */
    browserCache?: BrowserCachePolicyOptions;
    trustedOrigins?: string[];
    executionMode?: 'auto' | 'worker' | 'main-thread';
    workerUrl?: string;
}
/**
 * Browser application client that owns one local model lifecycle service.
 */
export declare class SippClient implements SippClientShape {
    #private;
    readonly observability: EngineObservability;
    readonly models: ModelStore;
    constructor(options?: SippClientOptions);
    /**
     * Registers or replaces an endpoint after its descriptor is validated.
     */
    add(id: string, descriptor: EndpointDescriptor): Promise<EndpointRef>;
    remove(id: string): Promise<void>;
    query(input: QueryInput, options?: QueryOptions): BrowserTextRun;
    chat(input: ChatInput, options?: ChatOptions): BrowserTextRun;
    embed(input: string, options?: EmbedOptions): BrowserEmbeddingRun;
    state(): EngineState;
    subscribeEvents(listener: (event: EngineEvent) => void): () => void;
    close(): Promise<void>;
    private assertOpen;
    private removeLocalEndpoint;
    private ensureLocalEndpoint;
}