import type { ExtractInjectionAPI } from '@atlaskit/editor-common/types';
import type { Step } from '@atlaskit/editor-prosemirror/transform';
import type { CollabEditPlugin } from '../collabEditPluginType';
type StepSessionMetrics = {
    maxStepSize: number;
    numberOfSteps: number;
    stepSizeSumForP90: number[];
    totalStepSize: number;
};
/**
 * Gets the current step session metrics for a given session ID
 * If the session ID does not exist, it initializes a new metrics object.
 * It calculates the total size of the steps, the number of steps,
 * the maximum step size, and the sum of step sizes for P90 calculation.
 *
 * @param metrics - The existing metrics object from local storage.
 * @param sessionId - The session ID for which to get the metrics.
 * @param steps - The steps to calculate the metrics from.
 * @returns The updated step session metrics for the given session ID.
 */
export declare const getNcsSessionStepMetrics: (metrics: {
    [sessionId: string]: StepSessionMetrics;
}, sessionId: string, steps: Step[]) => StepSessionMetrics;
/**
 * Gets the current active sessions from local storage
 * If the session ID does not exist, it initializes a new active session.
 *
 * This is used in the ncsStepMetricsPlugin to determine if the session is still active
 * before sending the ncs steps analytics event.
 *
 * @param sessionId - The session ID to check or update in local storage.
 * @returns void
 */
export declare const updateNcsActiveSessions: (sessionId: string) => void;
type UpdateNcsSessionStepMetricProps = {
    api: ExtractInjectionAPI<CollabEditPlugin> | undefined;
    steps: Step[];
};
/**
 * Updates the step session metrics in local storage for a given session ID.
 * It calculates the metrics based on the provided steps and updates the storage.
 *
 * @param api - The API to access the collab edit plugin.
 * @param steps - The steps to calculate the metrics from.
 * @return void
 */
export declare const updateNcsSessionStepMetrics: ({ api, steps, }: UpdateNcsSessionStepMetricProps) => void;
export {};