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vite-plugin/purge-comments/index.ts

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+import type { Plugin } from 'vite'
+import MagicString from 'magic-string'
+
+const commentRe = /<!--(?:.{2,}?)-->/sg
+
+/**
+ * This plugin removes HTML comments from your code.
+ */
+export function PurgeComments() {
+  let sourcemap: boolean | 'inline' | 'hidden' | undefined
+  return {
+    name: 'purge-comments',
+    enforce: 'pre',
+    configResolved(config) {
+      sourcemap = config.build.sourcemap
+    },
+    transform: (code, id) => {
+      if (
+        !(
+          id.endsWith('.vue')
+          || id.endsWith('.html')
+          || id.endsWith('.svg')
+        )
+      ) {
+        return
+      }
+      if (!code.includes('<!--')) {
+        return
+      }
+
+      const s = new MagicString(code)
+      s.replace(commentRe, '')
+
+      if (s.hasChanged()) {
+        return {
+          code: s.toString(),
+          map: sourcemap ? s.generateMap() : null,
+        }
+      }
+    },
+  } satisfies Plugin
+}