Hey there! Sorry you hit this snag as a new Node.js developer—let’s get this sorted out right away. The error is clear: the old formidable@1.0.17 version doesn’t play nice with your current Node.js setup, so we need to upgrade it to at least 1.2.0. Here’s how to do it depending on your situation:

If you’re directly using Formidable in your project #

If you added formidable as a direct dependency (you can check your package.json to confirm), just run this command in your project folder:

npm install formidable@^1.2.0 --save

The @^1.2.0 ensures you install the latest compatible version of 1.x (which is backward-compatible with most use cases), and --save updates your package.json so future installs use this version.

If Formidable is a sub-dependency (installed by another package) #

Sometimes formidable gets pulled in by another package you’re using (like an older Express middleware or file upload library). In this case, you’ll need to force the upgrade:

For npm 8.3.0 or newer (recommended) #

Use npm’s built-in overrides feature to lock in the correct version. Add this to your package.json:

"overrides": {
  "formidable": "^1.2.0"
}

Then re-run:

npm install

This tells npm to ignore the version required by the sub-dependency and use the one you specified instead.

For older npm versions (before 8.3.0) #

You’ll need a helper tool called npm-force-resolutions:

1. First install it as a dev dependency:

npm install npm-force-resolutions --save-dev

2. Add a preinstall script to your package.json (this runs automatically before npm install):

"scripts": {
  "preinstall": "npx npm-force-resolutions"
}

3. Add a resolutions field to your package.json:

"resolutions": {
  "formidable": "^1.2.0"
}

4. Finally, run npm install again.

Verify the upgrade worked #

To make sure everything’s set, run this command to check the installed version of formidable:

npm ls formidable

You should see a version number starting with 1.2.0 or higher in the output.

内容的提问来源于stack exchange，提问作者Ariel