From 0c98f33573c8d2844eddc5892c4e7f39fdfa70ad Mon Sep 17 00:00:00 2001
From: alex8088 <244096523@qq.com>
Date: Fri, 15 Dec 2023 21:40:24 +0800
Subject: [PATCH] perf(externalizeDepsPlugin): use cached package data to
 improve performance

---
 src/plugins/externalizeDeps.ts | 7 ++-----
 src/utils.ts                   | 4 +++-
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/src/plugins/externalizeDeps.ts b/src/plugins/externalizeDeps.ts
index 69aa123..e2b089b 100644
--- a/src/plugins/externalizeDeps.ts
+++ b/src/plugins/externalizeDeps.ts
@@ -1,6 +1,5 @@
-import path from 'node:path'
-import { createRequire } from 'node:module'
 import { type Plugin, mergeConfig } from 'vite'
+import { loadPackageData } from '../utils'
 
 export interface ExternalOptions {
   exclude?: string[]
@@ -13,9 +12,7 @@ export interface ExternalOptions {
 export function externalizeDepsPlugin(options: ExternalOptions = {}): Plugin | null {
   const { exclude = [], include = [] } = options
 
-  const packagePath = path.resolve(process.cwd(), 'package.json')
-  const require = createRequire(import.meta.url)
-  const pkg = require(packagePath)
+  const pkg = loadPackageData() || {}
   let deps = Object.keys(pkg.dependencies || {})
 
   if (include.length) {
diff --git a/src/utils.ts b/src/utils.ts
index e2b2e64..810a0c1 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -53,6 +53,7 @@ export function loadEnv(
 interface PackageData {
   main?: string
   type?: 'module' | 'commonjs'
+  dependencies?: Record<string, string>
 }
 
 let packageCached: PackageData | null = null
@@ -65,7 +66,8 @@ export function loadPackageData(root = process.cwd()): PackageData | null {
     const data = _require(pkg)
     packageCached = {
       main: data.main,
-      type: data.type
+      type: data.type,
+      dependencies: data.dependencies
     }
     return packageCached
   }