playwright-performance-reporter/lib/presenters/timeline-data-presenter/timeline-data-presenter.d.ts

Measure and publish performance metrics from browser dev-tools when running playwright

import { type PresenterWriter, type ResultAccumulator, type TestPerformance } from '../../types/index.js';
import { type TimelineDataPoint, type ChartPresenterOptions } from './types.js';
/**
 * Base presenter that collects timeline data points and writes to file
 */
export declare class TimelineDataPresenter implements PresenterWriter {
    /**
     * Status whether writer is usable
     */
    protected isClosed: boolean;
    /**
     * Timeline data collected from writes
     */
    protected timelineData: TimelineDataPoint[];
    /**
     * Locator where to store the output
     */
    private readonly filePath;
    /**
     * File writer
     */
    private readonly fileStream;
    /**
     * Maps unique test ids to the computed name
     */
    private readonly testIdToParentNameMap;
    /**
     * Initialize writer
     *
     * @param options defines target output
     */
    constructor(options: ChartPresenterOptions);
    /**
     * Finish data collection and generate output
     */
    close(): Promise<boolean>;
    /**
     * Delete created file
     */
    delete(): Promise<boolean>;
    /**
     * Create new entry by filtering numeric data for the timeline.
     *
     * @param content The result accumulator containing test performance data
     */
    write(content: ResultAccumulator): Promise<boolean>;
    /**
     * Extract a TimelineDataPoint from TestPerformance data
     *
     * @param caseId The case identifier
     * @param testPerformance The test performance data
     * @returns TimelineDataPoint or undefined if no numeric data found
     */
    protected extractDatapoint(caseId: string, testPerformance: TestPerformance): TimelineDataPoint | undefined;
    /**
     * Generate output from collected timeline data
     */
    protected generate(): string;
}