function assertNoBrowserErrors()

in dev-utils/webdriver.js [68:114]
37 lines of code
9 McCabe index (conditional complexity)

function assertNoBrowserErrors(whitelist) {
  return new Promise((resolve, reject) => {
    /**
     * browser.log API is available only in chrome driver
     * from 76 using webdriver protocol
     *
     * https://bugs.chromium.org/p/chromedriver/issues/detail?id=2947
     */
    if (!isChromeLatest()) {
      return resolve()
    }
    const failureEntries = []
    const debugLogs = []
    const browserLog = browser.getLogs('browser')

    for (var i = 0; i < browserLog.length; i++) {
      var logEntry = browserLog[i]
      if (isLogEntryATestFailure(logEntry, whitelist)) {
        failureEntries.push(logEntry)
      }
      if (logLevels[logEntry.level].value >= debugLevel) {
        debugLogs.push(logEntry)
      }
    }

    if (failureEntries.length > 0 || debugMode) {
      console.log('------------> FailuresLogs')
      console.log(JSON.stringify(failureEntries, undefined, 2))
    }

    if (debugMode) {
      console.log('------------> debugLogs')
      console.log(JSON.stringify(debugLogs, undefined, 2))
    }

    if (failureEntries.length > 0) {
      return reject(
        new Error(
          'Expected no errors in the browserLog but got ' +
            failureEntries.length +
            ' error(s)'
        )
      )
    }
    resolve()
  })
}