diff --git a/eo2js/src/commands/link.js b/eo2js/src/commands/link.js
index a4cbc29..6e55054 100644
--- a/eo2js/src/commands/link.js
+++ b/eo2js/src/commands/link.js
@@ -64,6 +64,17 @@ const link = function(options) {
   execSync('npm install', {cwd: project})
 
   console.log(`Copying ${main} file...`)
+  const lock = path.resolve(project, 'package-lock.json')
+  if (!fs.existsSync(lock)) {
+    execSync('npm install', {cwd: project})
+    if (options.dependency) {
+      fs.cpSync(
+        options.dependency,
+        path.resolve(project, 'node_modules/eo2js-runtime'),
+        {recursive: true}
+      )
+    }
+  }
   fs.copyFileSync(
     path.resolve(options.resources, `js/${main}`),
     path.resolve(project, main)
diff --git a/eo2js/test/commands/link.test.js b/eo2js/test/commands/link.test.js
index eff85e7..18e19c7 100644
--- a/eo2js/test/commands/link.test.js
+++ b/eo2js/test/commands/link.test.js
@@ -1,6 +1,7 @@
 const {runSync, assertFilesExist} = require('../helpers')
 const path = require('path');
 const fs = require('fs');
+const assert = require('assert');
 
 describe('link', function() {
   const home = path.resolve('temp/test-link')
@@ -39,4 +40,14 @@ describe('link', function() {
     assertFilesExist(link('--tests'), project, ['node_modules/mocha'])
     done()
   })
+  it('should not reinstall npm packages if package-lock.json exists', function(done) {
+    this.timeout(10000)
+    link()
+    const lockFilePath = path.resolve(project, 'package-lock.json')
+    const initialMtime = fs.statSync(lockFilePath).mtime
+    link()
+    const finalMtime = fs.statSync(lockFilePath).mtime
+    assert.strictEqual(initialMtime.getTime(), finalMtime.getTime(), 'package-lock.json was modified on second run')
+    done()
+  })
 })