From 31454eaac26bf081b206ee23756ff9d070a0d194 Mon Sep 17 00:00:00 2001
From: "Xin Du (Clark)" <clark.duxin@gmail.com>
Date: Tue, 12 Oct 2021 18:39:55 +0100
Subject: [PATCH] fix(nitro): firebase package.json is not exported (#809)

---
 src/presets/firebase.ts |  7 +++----
 src/utils/index.ts      | 15 +++++++++++++++
 2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/src/presets/firebase.ts b/src/presets/firebase.ts
index 25d5aaf4bd..a7bfbdaadd 100644
--- a/src/presets/firebase.ts
+++ b/src/presets/firebase.ts
@@ -4,7 +4,7 @@ import fse from 'fs-extra'
 import consola from 'consola'
 import globby from 'globby'
 
-import { writeFile } from '../utils'
+import { readPackageJson, writeFile } from '../utils'
 import { NitroPreset, NitroContext } from '../context'
 
 export const firebase: NitroPreset = {
@@ -69,9 +69,8 @@ async function writeRoutes ({ output: { publicDir, serverDir }, _nuxt: { rootDir
         dependencies,
         devDependencies: {
           'firebase-functions-test': 'latest',
-          'firebase-admin': _require('firebase-admin/package.json').version,
-          'firebase-functions': _require('firebase-functions/package.json')
-            .version
+          'firebase-admin': readPackageJson('firebase-admin', _require).version,
+          'firebase-functions': readPackageJson('firebase-functions', _require).version
         },
         engines: { node: nodeVersion }
       },
diff --git a/src/utils/index.ts b/src/utils/index.ts
index 997f363e66..998f659ead 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -125,3 +125,18 @@ export function getDependencies (dir: string, mode: keyof typeof _getDependencie
 export function serializeImportName (id: string) {
   return '_' + id.replace(/[^a-zA-Z0-9_$]/g, '_')
 }
+
+export function readPackageJson (
+  packageName: string,
+  _require: NodeRequire = createRequire(import.meta.url)
+) {
+  try {
+    return _require(`${packageName}/package.json`)
+  } catch (error) {
+    if (error.code === 'ERR_PACKAGE_PATH_NOT_EXPORTED') {
+      const [pkgModulePath] = /^(.*\/node_modules\/).*$/.exec(_require.resolve(packageName))
+      return fse.readJSONSync(resolve(pkgModulePath, packageName, 'package.json'))
+    }
+    throw error
+  }
+}