import { Activity } from "../activities/index.js";
import { Command } from "../commands/index.js";
import * as events from "../events/index.js";
import { StopWatch } from "./stopwatch.js";
/** Statistics about a run of Text-Runner */
interface ActivityResult {
    readonly activity?: Activity;
    readonly error?: Error;
    readonly finalName?: string;
    readonly message?: string;
    readonly output?: string;
    readonly status: events.ResultStatus;
}
/** ActivityCollector provides statistics about the Text-Runner command it observes. */
export declare class ActivityCollector {
    activities: ActivityResult[];
    stopWatch: StopWatch;
    constructor(command: Command);
    onResult(result: events.Result): void;
    results(): ActivityResults;
}
export declare class ActivityResults extends Array<ActivityResult> {
    readonly duration: string;
    constructor(results: Array<ActivityResult>, duration: string);
    errorCount(): number;
    errors(): Error[];
}
export {};
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