vendor.min.js filesize has increased from 3.0MB to 8.7MB in 1.10.27

[slwa-epowell]

I've noticed that the filesize of ./themes/grav/vendor.min.js has increased from 3.0MB to 8.7MB since version 1.10.27.

Unfortunately with our combination of server and internet speed this is enough to make a noticeable difference in how long it takes the admin pages to load. (This is exacerbated by the fact that in our production environment the browser does not seem to cache it, but I suspect this is unrelated to Grav.)

In the current version of the file I see the following header:
/*

• ATTENTION: An "eval-source-map" devtool has been used.
• This devtool is neither made for production nor for readable output files.
• It uses "eval()" calls to create a separate source file with attached SourceMaps in the browser devtools.
• If you are trying to read the output file, select a different devtool (https://webpack.js.org/configuration/devtool/)
• or disable the default devtool with "devtool: false".
• If you are looking for production-ready output files, see mode: "production" (https://webpack.js.org/configuration/mode/).
  */

Many thanks.