Function checkForUpdates

cli/release/index.js:483–535

(runningProcess, exitListener)

}

async function checkForUpdates(runningProcess, exitListener) {
  try {
    const currentVersion = getCurrentVersion()

    const latestVersion = await getLatestVersion()
    if (!latestVersion) return

    if (
      // Download new version if current version is unknown or outdated.
      currentVersion === null ||
      compareVersions(currentVersion, latestVersion) < 0
    ) {
      term.clearLine()

      runningProcess.removeListener('exit', exitListener)

      await new Promise((resolve) => {
        let exited = false
        runningProcess.once('exit', () => {
          exited = true
          resolve()
        })
        runningProcess.kill('SIGTERM')
        setTimeout(() => {
          if (!exited) {
            runningProcess.kill('SIGKILL')
            // Safety: resolve after giving SIGKILL time to take effect
            setTimeout(() => resolve(), 1000)
          }
        }, 5000)
      })

      resetTerminal({ exitAlternateScreen: true })
      console.log(`Update available: ${currentVersion} → ${latestVersion}`)

      await downloadBinary(latestVersion)

      const newChild = spawnInstalledBinary({ detached: false })

      newChild.on('exit', (code, signal) => {
        resetTerminal({
          exitAlternateScreen: shouldExitAlternateScreen(code, signal),
        })
        printCrashDiagnostics(code, signal)
        process.exit(signal ? 1 : (code || 0))
      })

      return new Promise(() => {})
    }
  } catch (error) {
    // Ignore update failures
  }
}

function printCrashDiagnostics(code, signal) {
  // Windows NTSTATUS codes (unsigned DWORD)