YouTube is down because of minified dev build being deployed
youtube.com
youtube.com
You are currently using minified code outside of NODE_ENV === "production". This means that you are running a slower development build of Redux. You can use loose-envify (https://github.com/zertosh/loose-envify) for browserify or setting mode to production in webpack (https://webpack.js.org/configuration/mode/) to ensure you have the correct code for your production build.
At least it is minified :D
https://www.youtube.com/s/desktop/6babc418/jsbin/desktop_pol...
desktop_polymer_inlined_html_polymer_flags.js:9964 Uncaught TypeError: Cannot assign to read only property 'process' of object '#<Window>' at desktop_polymer_inlined_html_polymer_flags.js:9964 at desktop_polymer_inlined_html_polymer_flags.js:9972 at desktop_polymer_inlined_html_polymer_flags.js:22336 (anonymous) @ desktop_polymer_inlined_html_polymer_flags.js:9964 (anonymous) @ desktop_polymer_inlined_html_polymer_flags.js:9972 (anonymous) @ desktop_polymer_inlined_html_polymer_flags.js:22336