remove uiw codemirror themes to fix site

+ todo: refactor themes to not use uiw package

packages/codemirror/themes-vanilla.mjs

@@ -0,0 +1,116 @@
+import strudelTheme from './themes/strudel-theme-vanilla.mjs';
+import { setTheme } from '@strudel/draw';
+
+export const themes = {
+  strudelTheme,
+};
+
+// lineBackground is background with 50% opacity, to make sure the selection below is visible
+
+export const settings = {
+  strudelTheme: {
+    background: '#222',
+    lineBackground: '#22222299',
+    foreground: '#fff',
+    // foreground: '#75baff',
+    caret: '#ffcc00',
+    selection: 'rgba(128, 203, 196, 0.5)',
+    selectionMatch: '#036dd626',
+    // lineHighlight: '#8a91991a', // original
+    lineHighlight: '#00000050',
+    gutterBackground: 'transparent',
+    // gutterForeground: '#8a919966',
+    gutterForeground: '#8a919966',
+  },
+};
+
+function getColors(str) {
+  const colorRegex = /#([0-9A-Fa-f]{6}|[0-9A-Fa-f]{3})/g;
+  const colors = [];
+
+  let match;
+  while ((match = colorRegex.exec(str)) !== null) {
+    const color = match[0];
+    if (!colors.includes(color)) {
+      colors.push(color);
+    }
+  }
+
+  return colors;
+}
+
+// TODO: remove
+export function themeColors(theme) {
+  return getColors(stringifySafe(theme));
+}
+
+function getCircularReplacer() {
+  const seen = new WeakSet();
+  return (key, value) => {
+    if (typeof value === 'object' && value !== null) {
+      if (seen.has(value)) {
+        return;
+      }
+      seen.add(value);
+    }
+    return value;
+  };
+}
+
+function stringifySafe(json) {
+  return JSON.stringify(json, getCircularReplacer());
+}
+
+export const theme = (theme) => themes[theme] || themes.strudelTheme;
+
+// css style injection helpers
+export function injectStyle(rule) {
+  const newStyle = document.createElement('style');
+  document.head.appendChild(newStyle);
+  const styleSheet = newStyle.sheet;
+  const ruleIndex = styleSheet.insertRule(rule, 0);
+  return () => styleSheet.deleteRule(ruleIndex);
+}
+
+let currentTheme,
+  resetThemeStyle,
+  themeStyle,
+  styleID = 'strudel-theme-vars';
+export function initTheme(theme) {
+  if (!document.getElementById(styleID)) {
+    themeStyle = document.createElement('style');
+    themeStyle.id = styleID;
+    document.head.append(themeStyle);
+  }
+  activateTheme(theme);
+}
+
+export function activateTheme(name) {
+  if (currentTheme === name) {
+    return;
+  }
+  currentTheme = name;
+  if (!settings[name]) {
+    console.warn('theme', name, 'has no settings.. defaulting to strudelTheme settings');
+  }
+  const themeSettings = settings[name] || settings.strudelTheme;
+  // set css variables
+  themeStyle.innerHTML = `:root {
+      ${Object.entries(themeSettings)
+        // important to override fallback
+        .map(([key, value]) => `--${key}: ${value} !important;`)
+        .join('\n')}
+    }`;
+  setTheme(themeSettings);
+  // tailwind dark mode
+  if (themeSettings.light) {
+    document.documentElement.classList.remove('dark');
+  } else {
+    document.documentElement.classList.add('dark');
+  }
+  resetThemeStyle?.();
+  resetThemeStyle = undefined;
+  if (themeSettings.customStyle) {
+    resetThemeStyle = injectStyle(themeSettings.customStyle);
+  }
+}