export declare class C3Performance {
    readonly key: string;
    readonly value1: string;
    readonly value2: string;
    startTime: any;
    constructor(key: string, value1?: string, value2?: string);
    end(): void;
    static add(key: string, time: number): void;
    static dump(): void;
    static incGlobal(): number;
    static incCurrent(): number;
    static decCurrent(): number;
    static getCurrent(): number;
    static setLastSettle(timestamp: number): void;
    static getLastSettle(): number;
    static isLastSettleDue(maxTime: number): boolean;
}
type StopwatchName = string;
type StopwatchTaskName = string;
type StopwatchOngoingTask = {
    name: StopwatchTaskName;
    start: number;
};
type StopwatchCompletedTask = StopwatchOngoingTask & {
    stop: number;
    span: number;
};
type StopwatchSumTask = {
    name: StopwatchTaskName;
    sumSpan: number;
};
type StopwatchFormatter = (name: StopwatchName, tasks: StopwatchCompletedTask[]) => string;
type StopwatchSummaryFormatter = (name: StopwatchName, tasks: StopwatchSumTask[]) => string;
type StopwatchCondition = (tasks: StopwatchCompletedTask[]) => boolean;
export declare const anyBigger: (value: number) => StopwatchCondition;
export declare class Stopwatch {
    readonly name: StopwatchName;
    private static summary;
    private static active;
    private static DEFAULT_FORMATTER;
    private static SUM_FORMATTER;
    private static defaultFormatter;
    static on(): void;
    static off(): void;
    static isActive(): boolean;
    static setDefaultFormatter(formatter?: StopwatchFormatter): void;
    static dumpSummary(formatter?: StopwatchSummaryFormatter): string;
    private static _addToSummary;
    private static getAndRestartSummary;
    static new(name: StopwatchName, startTask?: StopwatchTaskName): Stopwatch;
    private currentTasks;
    private completedTasks;
    private constructor();
    clean(): Stopwatch;
    start(taskName: string): Stopwatch;
    stop(): Stopwatch;
    next(newTaskName: string): Stopwatch;
    dump(formatter?: StopwatchFormatter): string;
    dumpIf(condition: StopwatchCondition, formatter?: StopwatchFormatter): void;
    private _start;
    private _stop;
}
export {};
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