import type { ObserveSpec, ResolvedFunction } from "../types.ts";
import type { ArtifactStore } from "./artifact-store.ts";
export declare function runToolObserve(opts: {
    sessionID: string;
    tool: string;
    activeFns: ResolvedFunction[];
    artifacts: ArtifactStore;
    lastAssistantText: string | null;
    toolArgs?: unknown;
    toolOutput?: unknown;
}): string[];
export declare function runTextCapture(opts: {
    sessionID: string;
    activeFns: ResolvedFunction[];
    artifacts: ArtifactStore;
    assistantText: string;
}): void;
export declare function runMessageObserve(opts: {
    sessionID: string;
    activeFns: ResolvedFunction[];
    artifacts?: ArtifactStore;
    userMessagedThisTurn?: boolean;
    workspaceDir: string;
}): string[];
export declare function runActivateObserve(opts: {
    sessionID: string;
    activeFns: ResolvedFunction[];
}): string[];
/**
 * Register a custom observe event handler.
 * @param eventName Event name to listen for.
 * @param handler Handler function receiving (ctx, spec).
 * @param capability When true, the handler's ctx parameter is wrapped into an
 *   ObserveCapability before invocation.
 */
export declare function registerObserveHandler(eventName: string, handler: (ctx: unknown, spec: ObserveSpec) => string[], capability?: boolean): void;
export declare function runCustomObserve(opts: {
    sessionID: string;
    eventName: string;
    activeFns: ResolvedFunction[];
    ctx?: unknown;
    /** Optional extra fields forwarded to ObserveCapability when capability mode is on. */
    observeExtras?: {
        toolName?: string;
        toolArgs?: unknown;
        toolOutput?: unknown;
        lastAssistantText?: string;
    };
}): string[];
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