In order to show nearby articles on maps used at Wikivoyage JavaScript data files at tools.wmflabs.org are needed. These files are named <language-code>-articles.js and are available for all Wikivoyage language branches. For instance:

• https://tools.wmflabs.org/wikivoyage/w/data/de-articles.js
• https://tools.wmflabs.org/wikivoyage/w/data/en-articles.js

At all Wikivoyage branches the article count permanently increases, that's why these data files should be updated, at least every month or every week.

Until December 2017 these files were updated but later stopped. We do not know who is responsible for these files; but I think these files and the tools server directory were created by former developers like Yurik (Yuri Astrakhan) and JGirault (WMF) (Julien Girault).

Updating should normally a simple process which can be done by a cron job.