page.go
func (p *Page) ReadNewLogs(logType string) ([]Log, error) {
	if p.logs == nil {
		p.logs = map[string][]Log{}
	}

	clientLogs, err := p.session.NewLogs(logType)
	if err != nil {
		return nil, fmt.Errorf("failed to retrieve logs: %s", err)
	}

	messageMatcher := regexp.MustCompile(`^(?s:(.+))\s\(([^)]*:\w*)\)$`)

	var logs []Log
	for _, clientLog := range clientLogs {
		matches := messageMatcher.FindStringSubmatch(clientLog.Message)
		message, location := clientLog.Message, ""
		if len(matches) > 2 {
			message, location = matches[1], matches[2]
		}

		log := Log{message, location, clientLog.Level, msToTime(clientLog.Timestamp)}
		logs = append(logs, log)
	}
	p.logs[logType] = append(p.logs[logType], logs...)

	return logs, nil
}
func (p *Page) ReadNewLogs(logType string) ([]Log, error) {
	if p.logs == nil {
		p.logs = map[string][]Log{}
	}

	clientLogs, err := p.session.NewLogs(logType)
	if err != nil {
		return nil, fmt.Errorf("failed to retrieve logs: %s", err)
	}

	messageMatcher := regexp.MustCompile(`^(?s:(.+))\s\(([^)]*:\w*)\)$`)

	var logs []Log
	for _, clientLog := range clientLogs {
		matches := messageMatcher.FindStringSubmatch(clientLog.Message)
		message, location := clientLog.Message, ""
		if len(matches) > 2 {
			message, location = matches[1], matches[2]
		}

		log := Log{message, location, clientLog.Level, msToTime(clientLog.Timestamp)}
		logs = append(logs, log)
	}
	p.logs[logType] = append(p.logs[logType], logs...)

	return logs, nil
}
// ReadNewLogs returns new log messages of the provided log type. For example,
// page.ReadNewLogs("browser") returns browser console logs, such as JavaScript
// logs and errors. Only logs since the last call to ReadNewLogs are returned.
// Valid log types may be obtained using the LogTypes method.