[DRE-maint] Bug#891724: rake assets:precompile fails with 'ExecJS::ProgramError: TypeError: UglifyJS.Compressor is not a function'

[Pirate Praveen]

Package: gitlab
Version: 9.5.4+dfsg-6
Severity: grave
Control: tag -1 help

gitlab currently fails to install, it was working earlier so the issue
was likely introduced by a regression in one of the dependencies. But so
far I'm unable to track it down.

Precompiling assets...
I, [2018-02-28T09:39:09.279812 #22324]  INFO -- : Writing
/usr/share/gitlab/public/assets/print-87b4ace0db1f79d91e4fe6e74435b66b71d70fee57ffbb72d0fade17374fcc6b.css
I, [2018-02-28T09:39:09.281316 #22324]  INFO -- : Writing
/usr/share/gitlab/public/assets/print-87b4ace0db1f79d91e4fe6e74435b66b71d70fee57ffbb72d0fade17374fcc6b.css.gz
I, [2018-02-28T09:39:09.451061 #22324]  INFO -- : Writing
/usr/share/gitlab/public/assets/notify-abfe30822d82207505a29881cc27c46d0cf2f8bf68481bd421ba1ce23ca7c508.css
I, [2018-02-28T09:39:09.451349 #22324]  INFO -- : Writing
/usr/share/gitlab/public/assets/notify-abfe30822d82207505a29881cc27c46d0cf2f8bf68481bd421ba1ce23ca7c508.css.gz
I, [2018-02-28T09:39:10.417617 #22324]  INFO -- : Writing
/usr/share/gitlab/public/assets/katex-e46cafe9c3fa73920a7c2c063ee8bb0613e0cf85fd96a3aea25f8419c4bfcfba.css
I, [2018-02-28T09:39:10.417911 #22324]  INFO -- : Writing
/usr/share/gitlab/public/assets/katex-e46cafe9c3fa73920a7c2c063ee8bb0613e0cf85fd96a3aea25f8419c4bfcfba.css.gz
rake aborted!
ExecJS::ProgramError: TypeError: UglifyJS.Compressor is not a function
apply.source (eval at <anonymous> ((execjs):4108:8), <anonymous>:23:35)
eval (eval at <anonymous> ((execjs):4108:8), <anonymous>:63:2)
(execjs):4108:8
(execjs):4114:14
(execjs):1:102
Object.<anonymous> ((execjs):1:120)
Module._compile (module.js:635:30)
Object.Module._extensions..js (module.js:646:10)
Module.load (module.js:554:32)
tryModuleLoad (module.js:497:12)
Tasks: TOP => assets:precompile
(See full trace by running task with --trace)
dpkg: error processing package gitlab (--install):
 installed gitlab package post-installation script subprocess returned
error exit status 1
Processing triggers for systemd (237-3) ...
Errors were encountered while processing:
 gitlab

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