runScenario() — react Function Reference

Architecture documentation for the runScenario() function in benchmark.js from the react codebase.

Function javascript BabelCompiler Entrypoint called by 1

Entity Profile

BabelCompiler→ Entrypoint→ runScenario() — react Function Reference

Dependency Diagram

graph TD
  b2ef7c01_5c28_5871_b515_bf5c84d1478e["runScenario()"]
  02d6bf58_0cc1_3948_88dc_770b7cc0c6a8["benchmark.js"]
  b2ef7c01_5c28_5871_b515_bf5c84d1478e -->|defined in| 02d6bf58_0cc1_3948_88dc_770b7cc0c6a8
  ead87b1e_84cc_2be8_7c09_282b767b1113["runBenchmark()"]
  ead87b1e_84cc_2be8_7c09_282b767b1113 -->|calls| b2ef7c01_5c28_5871_b515_bf5c84d1478e
  style b2ef7c01_5c28_5871_b515_bf5c84d1478e fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

scripts/bench/benchmark.js lines 17–41

async function runScenario(benchmark, chrome) {
  const port = chrome.port;
  const results = await Lighthouse(
    `http://localhost:8080/${benchmark}/`,
    {
      output: 'json',
      port,
    },
    config
  );

  const perfMarkings = results.lhr.audits['user-timings'].details.items;
  const entries = perfMarkings
    .filter(({timingType}) => timingType !== 'Mark')
    .map(({duration, name}) => ({
      entry: name,
      time: duration,
    }));
  entries.push({
    entry: 'First Meaningful Paint',
    time: results.lhr.audits['first-meaningful-paint'].rawValue,
  });

  return entries;
}