fix

node_modules/mongodb/etc/prepare.js

@@ -0,0 +1,12 @@
+#! /usr/bin/env node
+var cp = require('child_process');
+var fs = require('fs');
+var os = require('os');
+
+if (fs.existsSync('src')) {
+  cp.spawn('npm', ['run', 'build:dts'], { stdio: 'inherit', shell: os.platform() === 'win32' });
+} else {
+  if (!fs.existsSync('lib')) {
+    console.warn('MongoDB: No compiled javascript present, the driver is not installed correctly.');
+  }
+}