feat(module): add support for vue using unplugin (#2416)

Co-authored-by: Benjamin Canac <canacb1@gmail.com>

src/plugins/nuxt-environment.ts

@@ -0,0 +1,40 @@
+import type { UnpluginOptions } from 'unplugin'
+import { join, normalize } from 'pathe'
+import { resolvePathSync } from 'mlly'
+import MagicString from 'magic-string'
+
+import { runtimeDir } from '../unplugin'
+
+/**
+ * This plugin normalises Nuxt environment (#imports) and `import.meta.client` within the Nuxt UI components.
+ */
+export default function NuxtEnvironmentPlugin() {
+  const stubPath = resolvePathSync(join(runtimeDir, 'vue/stubs'), { extensions: ['.ts', '.mjs', '.js'] })
+
+  return {
+    name: 'nuxt:ui',
+    enforce: 'pre',
+    resolveId(id) {
+      // this is implemented here rather than in a vite `config` hook for cross-builder support
+      if (id === '#imports') {
+        return stubPath
+      }
+    },
+    transformInclude(id) {
+      return normalize(id).includes(runtimeDir)
+    },
+    transform(code) {
+      if (code.includes('import.meta.client')) {
+        const s = new MagicString(code)
+        s.replaceAll('import.meta.client', 'true')
+
+        if (s.hasChanged()) {
+          return {
+            code: s.toString(),
+            map: s.generateMap({ hires: true })
+          }
+        }
+      }
+    }
+  } satisfies UnpluginOptions
+}