- Convert lots of JS to typescript, although marked a lot of it as ts-nocheck as adding types would take a very very long time. To be done separately, hopefully with help! - Upgrade many modules to polymer3 - Use chromium's build target for everything instead of duplicating a lot of build processes - Do the same for everything that was served by chrome://brave-resources, now that it's easier to have the build system for chrome://resources take our additional files TODO: Bring back manrope substitution for ru|el languages from brave_shared_resources_data_source.cc