import { type EventType, type ErrorDetails } from './schema';
import type { ITelemetrySink } from './sink/sink-interface';
import type { Context } from '../../api/context';
import type { CliIoHost } from '../io-host/cli-io-host';
export interface TelemetrySessionProps {
    readonly ioHost: CliIoHost;
    readonly client: ITelemetrySink;
    readonly arguments: any;
    readonly context: Context;
}
export interface TelemetryEvent {
    readonly eventType: EventType;
    readonly duration: number;
    readonly error?: ErrorDetails;
    readonly counters?: Record<string, number>;
}
/**
 * Timer of a single event
 */
export interface Timing {
    /**
     * Total time spent in this operation
     */
    totalMs: number;
    /**
     * Count of operations that together took `totalMs`.
     */
    count: number;
}
export declare class TelemetrySession {
    private readonly props;
    private ioHost;
    private client;
    private _sessionInfo?;
    private span?;
    private _nextEventCounters?;
    private count;
    constructor(props: TelemetrySessionProps);
    begin(): Promise<void>;
    attachRegion(region: string): Promise<void>;
    /**
     * Attach a language guess
     */
    attachLanguage(language: string | undefined): void;
    /**
     * Attach our best guess at running under an agent or not
     */
    attachAgent(isAgent: boolean | undefined): void;
    /**
     * Temporarily attach counters for the next event operation.
     *
     * They may be committed to the sent telemetry later.
     */
    attachCountersToNextEvent(counters: Record<string, number>): void;
    /**
     * Attach the CDK library version
     *
     * By default the telemetry will guess at the CDK library version if it so
     * happens that the CDK project is an NPM project and the CDK CLI is executed
     * in the root of NPM project with `aws-cdk-lib` available in `node_modules`.
     * This may succeed or may fail.
     *
     * Once we have produced and loaded the cloud assembly more accurate
     * information becomes available that we can add in.
     */
    attachCdkLibVersion(libVersion: string): void;
    /**
     * When the command is complete, so is the CliIoHost. Ends the span of the entire CliIoHost
     * and notifies with an optional error message in the data.
     */
    end(error?: ErrorDetails): Promise<void>;
    emit(event: TelemetryEvent): Promise<void>;
    private get sessionInfo();
}