first commit

dev/themeData.ts

@@ -0,0 +1,44 @@
+import { loadShikiTheme, type BundledShikiTheme } from 'astro-expressive-code'
+import { bundledThemes } from 'shiki'
+import { flattenThemeColors } from '~/utils'
+
+// Use this function to export theme data for analysis
+const exportThemeData = async () => {
+  const keyArrays = await Promise.all(
+    Object.keys(bundledThemes).map(async (theme) => {
+      const exTheme = await loadShikiTheme(theme as BundledShikiTheme)
+      const flatTheme = flattenThemeColors(exTheme)
+      return Object.keys(flatTheme)
+    }),
+  )
+  // Find intersection of all key arrays
+  const commonKeys = keyArrays.reduce((acc, keys) =>
+    acc.filter((key) => keys.includes(key)),
+  )
+  const allKeys = keyArrays.flat()
+  const keyCount = allKeys.reduce((acc: Record<string, number>, key) => {
+    acc[key] = (acc[key] || 0) + 1
+    return acc
+  }, {})
+  // Filter keys that appear in less than 10% of themes
+  // and sort them alphabetically
+  const sortedEntries = Object.entries(keyCount)
+    .filter(([_, count]) => count > Math.ceil(Object.keys(bundledThemes).length / 10))
+    .sort((a, b) => a[0].localeCompare(b[0]))
+  const jsonData = JSON.stringify(
+    {
+      allKeys: Object.fromEntries(sortedEntries),
+      commonKeys: commonKeys.sort(),
+      bundledThemes: Object.keys(bundledThemes).sort(),
+    },
+    null,
+    2,
+  )
+  const outputPath = './data/theme-data.json'
+  // Write to file
+  const fs = await import('fs/promises')
+  await fs.writeFile(outputPath, jsonData, 'utf-8')
+  console.log(`Theme data written to ${outputPath}`)
+}
+
+await exportThemeData()