Merge pull request #53 from runk/fix-node12

Fix Node 12.x support

Author: sgarner

utils.js

@@ -61,7 +61,10 @@ const getSelectedDbs = () => {
  const valids = ['City', 'Country', 'ASN'];
 
  const config = getConfig();
- const selected = config?.['selected-dbs'] ?? valids;
+ const selected =
+ config != null && config['selected-dbs'] != null
+ ? config['selected-dbs']
+ : valids;
 
  if (!Array.isArray(selected)) {
  console.error('selected-dbs property must have be an array.');