add module helper

module.mjs

@@ -0,0 +1,20 @@
+import { defineNuxtModule, extendViteConfig } from '@nuxt/kit'
+
+export default defineNuxtModule({
+  meta: {
+    name: 'trpc-nuxt',
+    configKey: 'trpc',
+    compatibility: {
+      nuxt: '^3.0.0',
+    },
+  },
+  async setup(_moduleOptions, nuxt) {
+    nuxt.options.build.transpile.push('trpc-nuxt')
+
+    extendViteConfig((config) => {
+      config.optimizeDeps = config.optimizeDeps || {}
+      config.optimizeDeps.exclude = config.optimizeDeps.exclude || []
+      config.optimizeDeps.include.push('trpc-nuxt/client')
+    })
+  },
+})