I want to do some javascript stuff with the CodeMirror editor in Admin. I would love to take a good look at what’s in there already, and as far as I can see all the code is in user/plugins/admin/themes/grav/js/admin.min.js. But that file is minified and almost 2 MB in size… the minification being the bigger problem.
Can somebody maybe tell me where all that code comes from? It’s not just the CodeMirror stuff I think…? That would be super helpful 
@Netzhexe, If you open file user/plugins/admin/themes/grav/js/admin.min.js you will find the names of 79 files on which the webpack bundle has been build upon.
To name a few:
"./app/dashboard/backup.js"
"./app/dashboard/cache.js"
"./app/dashboard/chart.js"
"./app/dashboard/index.js"
"./app/forms/fields/acl-picker.js"
"./app/forms/fields/array.js"
"./app/forms/fields/collections.js"
...
By the way, webpack is an asset bundler…
At its core, webpack is a static module bundler for modern JavaScript applications. When webpack processes your application, it internally builds a dependency graph which maps every module your project needs and generates one or more bundles .
Ah, my most consistent saviour…! 
Thank you for your reply. I admit I did not open that file because I checked it out on Github, and it was too big to display online, and so I thought it would be minified and hard to read anyway. However, I just looked and I actually don’t find any of those paths you mentioned, anywhere in the file. Just a loooooooooong line of minified javascript. Am I looking at the wrong version or something…?
@Netzhexe, Here are the first 16 unaltered lines of file user/plugins/admin/themes/grav/js/admin.min.js, showing a reference to ./app/dashboard/backup.js:
/*
* ATTENTION: An "eval-source-map" devtool has been used.
* This devtool is not 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/).
*/
var Grav;Grav =
/******/ (() => { // webpackBootstrap
/******/ var __webpack_modules__ = ({
/***/ "./app/dashboard/backup.js":
/*!*********************************!*
!*** ./app/dashboard/backup.js ***!
\*********************************/
By the way, its contents may look minified, but it isn’t…
Heh. I actually did have an outdated version (Grav 1.7.0-something, and Admin around that date). I just updated and now the file looks so much nicer thank youuuuuu!