This is the first time I am using ParcelJS. I npm it following their instruction everything looks good. So it would be the latest version. As soon as I run it against my project (a .html file with some js and css attached to it), I get this error.

favicon.ico: Invalid Version: undefined

I have tried to ask Google without much luck. Got any ideas?

This is the first time I am using ParcelJS. I npm it following their instruction everything looks good. So it would be the latest version. As soon as I run it against my project (a .html file with some js and css attached to it), I get this error.

favicon.ico: Invalid Version: undefined

I have tried to ask Google without much luck. Got any ideas?

• javascript
• parceljs

4 Answers 4

If you are using Parcel version 1.12.4 this github issue is the reason why you got this error. It's not your fault.

You may try to pin your Parcel version as 1.12.3 in package.json:

"dependencies": {
  "parcel": "1.12.3"
},

If your Parcel is installed globally, you may check your version of Parcel:

parcel --version
1.12.4

Uninstall 1.12.4 and reinstall 1.12.3:

npm uninstall -g parcel-bundler
npm install -g [email protected]

I had the same error and first I installed "@babel/preset-env": "^7.13.8" and it worked properly.

In my case, I had the quite similar error because my IDE accidentally imported a non-existent module. I had been suffering for a few hours, before I noticed that Т_Т So if decisions don't solve your problem, maybe it will be your case. Just check imports

TypeError: Invalid Version: undefined at new SemVer 

The Parcel lead's recommendation in the GitHub issue is to move to v2

npm uninstall -g parcel-bundler
npm install -g parcel