playwright-performance-reporter/lib/browsers/chromium/observers/heap-profiler-sampling.js

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

import { nativeChromiumPlugins, } from '../plugins/index.js';
import { enhanceGarbageCollectionPlugin, } from '../../../helpers/index.js';
export class HeapProfilerSampling {
    options;
    name = 'heapProfilerSampling';
    plugins = [
        nativeChromiumPlugins.heapProfilerDomainPlugin,
    ];
    constructor(options) {
        this.options = options;
        enhanceGarbageCollectionPlugin(nativeChromiumPlugins.heapGarbageCollectorPlugin, this, this.options);
    }
    /**
     * @inheritdoc
     */
    async onStart(accumulator, developmentTools) {
        return new Promise(async (resolve, reject) => {
            try {
                await developmentTools.HeapProfiler.startSampling();
            }
            catch {
                reject(new Error('HeapProfiler.startSampling command failed'));
            }
            resolve();
        });
    }
    /**
     * @inheritdoc
     */
    async onSampling(accumulator, developmentTools) { }
    /**
     * @inheritdoc
     */
    async onStop(accumulator, developmentTools) {
        return new Promise(async (resolve, reject) => {
            try {
                const stopSamplingResponse = await developmentTools.HeapProfiler.stopSampling();
                accumulator.heapProfilerSampling = JSON.stringify(stopSamplingResponse.profile);
            }
            catch {
                reject(new Error('HeapProfiler.stopSampling command failed'));
            }
            resolve();
        });
    }
}