import { IStage, ISDKPerformance } from './types/performance.interfaces';
/**
 *  A performance module to measure and to collect the time spending,
 *  memory usage and further performance data of the sdk.
 *
 *  @example Universal stages for all apps
 *  const performance = new SDKPerformance('localhost:8080/apps');
 *  performance.initializationEnd();
 *  performance.contextStart();
 *  performance.contextEnd();
 *  @example Custom an application dependent stage
 *  performance.addStage('like');
 *  performance.start('like');
 *  performance.end('like');
 *  @example Generate report object
 *  const report = this.performance.generateReport();
 */
declare class SDKPerformance implements ISDKPerformance {
    appsContextEnd: number;
    appsContextStart: number;
    appsUrl: string;
    sdkExecuteStartDate: number;
    sdkInitializationEnd: number;
    sdkInitializationStart: number;
    stages: Map<string, IStage>;
    static now(): number;
    static createStage(name: string): {
        name: string;
        start: number;
        end: number;
    };
    static titleCase(s: string): string;
    static toFixed(num: number): number;
    constructor(appsUrl: string);
    initializationStart(): void;
    initializationEnd(): void;
    contextStart(): void;
    contextEnd(): void;
    addStage(name: string): void;
    start(name: string): void;
    end(name: string): void;
    generateReport(): {
        appsUrl: string;
        sdkExecuteStartDate: number;
        sdkInitializationTime: number;
        appsContextTime: number;
    };
}
export default SDKPerformance;
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