eslint-rule-benchmark/dist/reporters/use-json-report.js

Benchmark ESLint rules with detailed performance metrics for CI and plugin development

import { collectSystemInfo } from './collect-system-info.js'
import { formatDeviation } from './format-deviation.js'
import { formatMs } from './format-ms.js'
async function useJsonReport(results, _userConfig) {
  let systemInfo = await collectSystemInfo()
  let testSpecifications = results.map(mapTestSpecResultToJsonReport)
  let report = {
    testSpecifications,
    systemInfo,
  }
  return JSON.stringify(report, null, 2)
}
function mapTestSpecResultToJsonReport(testSpecResult) {
  let testCasesReport = testSpecResult.testCaseResults.map(testCase => {
    let samplesReport = testCase.samplesResults.map(sample => {
      let sampleName = sample.name.replace(`${testCase.name} on `, '')
      return {
        metrics: mapMetricsToJson(sample.metrics),
        sampleName,
      }
    })
    return {
      ruleOptions: testCase.rule.options,
      description: testCase.description,
      ruleId: testCase.rule.ruleId,
      samples: samplesReport,
      name: testCase.name,
      id: testCase.id,
    }
  })
  return {
    benchmarkConfig: testSpecResult.benchmarkConfig,
    rulePath: testSpecResult.rulePath,
    ruleId: testSpecResult.ruleId,
    testCases: testCasesReport,
    name: testSpecResult.name,
  }
}
function mapMetricsToJson(metrics) {
  return {
    standardDeviation: formatDeviation(metrics.stdDev),
    operationsPerSecond: Math.round(metrics.hz),
    medianTime: formatMs(metrics.median),
    averageTime: formatMs(metrics.mean),
    minimumTime: formatMs(metrics.min),
    maximumTime: formatMs(metrics.max),
    totalSamples: metrics.sampleCount,
    periodInSeconds: metrics.period,
    p75: formatMs(metrics.p75),
    p99: formatMs(metrics.p99),
  }
}
export { useJsonReport }