refactor: externalize @nuxt/app

packages/app/package.json

@@ -0,0 +1,31 @@
+{
+  "name": "@nuxt/app",
+  "version": "0.0.0",
+  "repository": "nuxt/framework",
+  "license": "MIT",
+  "main": "./dist/index.ts",
+  "files": [
+    "dist"
+  ],
+  "scripts": {
+    "build": "mkdist",
+    "stub": "rm -rf dist && ln -s src dist #",
+    "prepublishOnly": "yarn build"
+  },
+  "dependencies": {
+    "create-require": "^1.1.1",
+    "defu": "^3.2.2",
+    "dotenv": "^8.2.0",
+    "jiti": "^1.6.4",
+    "rc9": "^1.2.0",
+    "scule": "^0.1.1",
+    "std-env": "^2.3.0",
+    "ufo": "^0.6.10",
+    "untyped": "^0.2.2"
+  },
+  "build": {
+    "entries": {
+      "index": {}
+    }
+  }
+}

packages/kit/package.json

@@ -4,6 +4,7 @@
   "repository": "nuxt/framework",
   "license": "MIT",
   "main": "./dist/index.js",
+  "types": "./dist/index.d.ts",
   "files": [
     "dist"
   ],
@@ -26,7 +27,7 @@
   },
   "build": {
     "entries": {
-      "index": {}
+      "index": { "format": "cjs" }
     }
   }
 }

packages/nitro/package.json

@@ -14,7 +14,7 @@
   },
   "build": {
     "entries": {
-      "index": {},
+      "index": { "format": "cjs" },
       "compat": { "format": "cjs" },
       "runtime/": {}
     },

packages/nuxt3/package.json

@@ -14,8 +14,7 @@
   },
   "build": {
     "entries": {
-      "index": {},
-      "app/": {}
+      "index": { "format": "cjs" }
     },
     "dependencies": [
       "@vue/compiler-sfc",
@@ -39,6 +38,7 @@
     ]
   },
   "dependencies": {
+    "@nuxt/app": "0.0.0",
     "@nuxt/friendly-errors-webpack-plugin": "^2.5.0",
     "@nuxt/nitro": "^0.1.11",
     "@vitejs/plugin-vue": "^1.1.5",

packages/nuxt3/src/consts.ts

@@ -1,3 +0,0 @@
-import { resolve } from 'path'
-
-export const APP_DIR = resolve(__dirname, 'app')

packages/nuxt3/src/core/load.ts

@@ -1,4 +1,4 @@
-import { resolve } from 'path'
+import { dirname } from 'path'
 import { loadNuxtConfig } from '@nuxt/kit'
 import Nuxt from './nuxt'
 export interface LoadNuxtOptions {
@@ -8,7 +8,7 @@ export async function loadNuxt (opts: LoadNuxtOptions) {
   const options = await loadNuxtConfig(opts)
 
   // Temp
-  options.appDir = resolve(__dirname, '../app')
+  options.appDir = dirname(require.resolve('@nuxt/app'))
   options._majorVersion = 3
 
   const nuxt = new Nuxt(options)

packages/nuxt3/src/index.ts

@@ -1,4 +1,3 @@
-
 export { loadNuxt } from './core'
 export { build } from './builder'
 export { main } from './cli'

scripts/build.ts

@@ -56,12 +56,12 @@ async function main () {
       if (entry.bundle) {
         const input = resolve(ctx.rootDir, entry.input)
         stubbed.push(entry.output)
-        const output = resolve(ctx.rootDir, entry.output) + '.ts'
+        const output = resolve(ctx.rootDir, entry.output) + '.js'
         await mkdir(dirname(output)).catch(() => { })
-        await writeFile(output, entry.format === 'cjs'
-          ? `module.exports = require('jiti')()('${input}')`
-          : `export * from '${input}'`
-        )
+        const cjsStub = `module.exports = require('jiti')()('${input}')`
+        const esStub = `export * from '${input}'`
+        await writeFile(output, entry.format === 'cjs' ? cjsStub : esStub)
+        await writeFile(output.replace('.js', '.d.ts'), esStub)
       }
     }
     consola.success(`Stub done: ${stubbed.join(', ')}`)