Staging and docker builds for CDS started failing on 11/23/19. The error appears to be due to a problem with an npm install in cds-ui/server:

12:03:11 [ERROR] npm ERR! code ETARGET
12:03:11 [ERROR] npm ERR! notarget No matching version found for @babel/helper-split-export-declaration@^7.7.4
12:03:11 [ERROR] npm ERR! notarget In most cases you or one of your dependencies are requesting
12:03:11 [ERROR] npm ERR! notarget a package version that doesn't exist.
12:03:11 [ERROR] npm ERR! notarget
12:03:11 [ERROR] npm ERR! notarget It was specified as a dependency of '@babel/traverse'
12:03:11 [ERROR] npm ERR! notarget
12:03:11 [ERROR]
12:03:11 [ERROR] npm ERR! A complete log of this run can be found in:
12:03:11 [ERROR] npm ERR! /home/jenkins/.npm/_logs/2019-11-23T17_03_11_756Z-debug.log