diff --git a/tools/mirror.mjs b/tools/mirror.mjs
index 378639d364a8077860eb259f1e420a94413b7620..58a01795511ea2699be54214061c41085152ac8d 100644
--- a/tools/mirror.mjs
+++ b/tools/mirror.mjs
@@ -18,11 +18,32 @@ const sources = [
     ".gitignore"
 ]
 
+const projects = [
+    "arkoala-arkts",
+    "incremental",
+    "interop",
+    "ui2abc"
+]
+
 const gitignoreOhos = `out
 sdk
 koala_build.log
 `
 
+function generatePackageJson(configPath) {
+
+    const packageJson = {
+        "name": "root",
+        "private": true,
+        "//": "DO NOT ADD dependencies or devDependencies clauses to this level! Keep subfolders autonomous.",
+        "scripts": {
+          "prepare": `${ projects.map(name => { return `cd ${name} && npm i && cd ..`}).join(" && ") }`,
+        }
+    }
+      
+    fs.writeFileSync(configPath, JSON.stringify(packageJson, null, 4), 'utf-8');
+}
+
 // Improve: need remove
 const excludes = [
     ".gitlab-ci.yml",
@@ -70,6 +91,8 @@ function main() {
 
     fs.mkdirSync(outPath)
 
+    generatePackageJson(path.join(outPath, "package.json"))
+
     const matches = (file, patterns) => patterns.some(p => file.endsWith(p) || file.match(`/${p}/`))
 
     sources.forEach(project => {