Scripting
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Counter-Strike 2 features the cs_script scripting system, using 
JavaScript, unlike the previous Source 2 titles Half-Life: Alyx, Dota 2, and SteamVR Home, which all used VScript to provide the ability to use Lua scripts natively when building custom levels using the Hammer Editor. In addition to cs_script, there is another scripting system called Pulse, which is visual scripting solution. Currently, Pulse is unavailable to end users. cs_script can be used for a variety of things including creating new game modes, weapons and other types of complicated logic.
Valve has provided a map called script_zoo, which showcases various ways to use cs_script to create unique gameplay, model changes and even chess in Counter-Strike! The .vmap file can be found in content/csgo/maps/editor/zoo. It can also be accessed in-game, by typing "map editor/zoo/script_zoo" into the game console.
Note:As of Limited Test Build v. 2000121/13936, VScript is not working, and Pulse is unavailable for end users to create, but inspection of CS2's internal files confirms that Lua scripts previously used for configuration of the Wingman gamemode, as well as managing behavior of various interactive elements on 
de_vertigo.
Confirm:Does TypeScript (.vts) still work using point_script?