source for roam/js snippet to append a meta element to head to tell twitter to render tweets with a dark theme

roam-dark-tweets.js

// adapted from https://github.com/wirtzdan/roam-js-extensions
// Twitter embed customization docs https://developer.twitter.com/en/docs/twitter-for-websites/webpage-properties
const themeMeta = document.createElement('meta');
themeMeta.name = "twitter:widgets:theme";
themeMeta.content = "dark";
document.getElementsByTagName("head")[0].appendChild(themeMeta);

const dntMeta = document.createElement('meta');
dntMeta.name = "twitter:dnt";
dntMeta.content = "on";
document.getElementsByTagName("head")[0].appendChild(dntMeta);