Function main

tooling/scripts/perf-desktop-runtime.mjs:568–1069

()

}

async function main() {
  await prepareDesktopBuild()

  const tempRoot = configuredTempRoot ?? await mkdtemp(join(tmpdir(), 'zennotes-desktop-perf-'))
  if (configuredTempRoot) await mkdir(tempRoot, { recursive: true })
  const vaultRoot = externalVaultRoot ?? join(tempRoot, 'vault')
  const userDataRoot = join(tempRoot, 'user-data')
  if (externalVaultRoot) await access(vaultRoot, constants.R_OK)
  else await mkdir(vaultRoot, { recursive: true })

  const debugPort = await getFreePort()
  let electron = null
  let client = null

  try {
    const seedStartedAt = performance.now()
    if (!externalVaultRoot) {
      if (skipSyntheticSeed) await access(vaultRoot, constants.R_OK)
      else await seedVault(vaultRoot, noteCount)
    }
    await seedUserData(userDataRoot, vaultRoot)
    const seedMs = round(performance.now() - seedStartedAt)

    electron = startDesktopRuntime({
      debugPort,
      userDataRoot,
      disablePersistedMetaCache: Boolean(externalVaultRoot),
      appPath: packagedAppPath
    })
    client = await connectToElectronPage(debugPort)

    const consoleMessages = []
    const networkScripts = []
    client.on('Runtime.consoleAPICalled', (event) => {
      const text = event.args?.map((arg) => arg.value ?? arg.description ?? '').join(' ') ?? ''
      if (event.type === 'error' || text.includes('[zen:perf]')) {
        consoleMessages.push({ type: event.type, text })
      }
    })
    client.on('Network.requestWillBeSent', (event) => {
      const script = scriptNameFromUrl(event.request?.url ?? '')
      if (script) networkScripts.push(script)
    })

    await Promise.all([
      client.send('Page.enable'),
      client.send('Runtime.enable'),
      client.send('Network.enable'),
      client.send('Performance.enable')
    ])
    if (cpuThrottleRate !== 1) {
      await client.send('Emulation.setCPUThrottlingRate', { rate: cpuThrottleRate })
    }
    await client.send('Page.addScriptToEvaluateOnNewDocument', {
      source: `
        (() => {
          try { window.localStorage.setItem('zen:perf', '1') } catch {}
          window.__ZEN_RUNTIME_PERF__ = { longTasks: [] };