import { type ActivityWatchdogDiagnostic } from "./activity-watchdog.ts";
import { type InteractiveEngineMessage } from "./protocol.ts";
export declare class InteractiveEngineMonitor {
    private readonly watchdog;
    private readonly readiness;
    private resolveReady;
    private readonly bound;
    private resolveBound;
    private rejectBound;
    private readonly projectTrustSettled;
    private resolveProjectTrustSettled;
    private rejectProjectTrustSettled;
    private resourcesReady;
    private resolveResourcesReady;
    private rejectResourcesReady;
    private resourceState;
    private readonly failure;
    private rejectFailure;
    private readonly onMessage;
    constructor(onDiagnostic: (diagnostic: ActivityWatchdogDiagnostic) => void, onMessage: (message: InteractiveEngineMessage) => void);
    stop(): void;
    fail(error: Error): void;
    /**
     * Waits for the engine to announce readiness. There is deliberately no
     * deadline: slow starts (cold module loads on Windows) must not be treated
     * as failures. Engine exit or a transport error rejects via fail().
     */
    waitUntilReady(): Promise<void>;
    waitUntilBound(): Promise<void>;
    waitUntilProjectTrustSettled(): Promise<void>;
    waitUntilResourcesReady(): Promise<void>;
    handleLine(line: string): boolean;
}
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