LCID-Fire/emscripten — comment on commit 81016c7c61a00ae15a7f4eaa7cbf949ee3439bc4
File: src/library.js line 402
By LCID-Fire:

I thought I did. Well here a little more verbose.
You (actually I) have a game. This game loads texture, model and sound files. Let's say every file has a size of 1 MB. And there will easily be more than 50 of them which means currently you would force the user to download 50MB of data everytime they play the game.
Instead, by this change, the user has to download the files just once. Once downloaded the files can be saved to disk using the _FileSystem API_ and every time the game is started the files may be restored to the ```FS``` emulation.