import type { ChatModelAdapter } from "@assistant-ui/react";
import type { ReasoningEffort } from "../shared/reasoning-effort.js";
import { type ContentPart } from "./sse-event-processor.js";
import type { ChatThreadScope } from "./use-chat-threads.js";
export type AgentChatSurfaceKind = 
/**
 * Chat rendered by the app itself, including the normal AgentSidebar. This
 * surface must not receive code-editing dev tools because source edits can
 * reload the same React tree that is hosting the chat.
 */
"app"
/** Chat rendered by the outer local dev frame, outside the app iframe. */
 | "dev-frame"
/** Chat hosted by Desktop for a local app with explicit code access. */
 | "desktop";
export declare const BACKGROUND_FOLLOW_IDLE_TIMEOUT_MS = 150000;
export declare const MAX_FOLLOWED_BACKGROUND_RUNS = 6;
export declare const MAX_BACKGROUND_FOLLOW_WALL_TIME_MS: number;
/**
 * Server truth for "does this run still look alive?", used to keep the client
 * from aborting a run the server believes is healthy — the destructive half of
 * the old client watchdog. Fails SAFE (true) when the lookup itself fails: an
 * unreachable server is not evidence that the run is dead. A local content
 * snapshot with an unresolved tool call is also treated as alive, matching the
 * server's own in-flight suspension.
 */
export declare function activeRunLooksAlive(args: {
    apiUrl: string;
    threadId: string | undefined;
    runId: string;
    content?: ContentPart[];
}): Promise<boolean>;
/**
 * The composer's exec mode is sent as explicit request metadata. The server
 * owns the plan-mode prompt and read-only tool filtering so the chat history
 * stays clean and Plan mode is enforced outside the model's goodwill.
 */
/**
 * Creates a ChatModelAdapter that connects to the agent-native
 * `/_agent-native/agent-chat` SSE endpoint. Supports reconnection via run-manager.
 */
export interface CreateAgentChatAdapterOptions {
    apiUrl?: string;
    tabId?: string;
    threadId?: string;
    modelRef?: {
        current: string | undefined;
    };
    engineRef?: {
        current: string | undefined;
    };
    effortRef?: {
        current: ReasoningEffort | undefined;
    };
    execModeRef?: {
        current: "build" | "plan" | undefined;
    };
    browserTabId?: string;
    scopeRef?: {
        current: ChatThreadScope | null | undefined;
    };
    surface?: AgentChatSurfaceKind;
}
export declare function createAgentChatAdapter(options?: CreateAgentChatAdapterOptions): ChatModelAdapter;
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