This is a graphical user interface (GUI) on top of the Streamlink command line interface (CLI).
Streamlink Twitch GUI is a NW.js application, which means that it is a web application written in JavaScript (EmberJS), HTML (Handlebars) and CSS (LessCSS) and is being run by a Node.js powered version of Chromium.
/Purge
Example: choco uninstall streamlink-twitch-gui -y -params '"/Purge"'
choco uninstall streamlink-twitch-gui -y -params '"/Purge"'