Version of node-d3-brush is marked for autoremoval from testing on Wed 21 Mar 2018. It depends (transitively) on node-babel, affected by 874420, 877220. You should try to prevent the removal by fixing these RC bugs.
Last update: 2018-02-23
Standards version of the package is outdated.
The package should be updated to follow the last version of Debian Policy
(Standards-Version 4.1.3 instead of