Meteor 3.1 and mocha : Cannot find module 'fibers'

Hello !

It used to work. I’ve removed all my test and keept only the default test. I’ve removed all tests. Same error.
Removed meteortesting:mocha , reinstall.

shoudl I remove dispatch:mocha ? Here is the contante of my .meteor file

meteor-base@1.5.2             # Packages every Meteor app needs to have
mobile-experience@1.1.2       # Packages for a great mobile UX
mongo@2.0.3                   # The database Meteor supports right now
reactive-var@1.0.13            # Reactive variable for tracker

standard-minifier-css@1.9.3   # CSS minifier run for production mode
standard-minifier-js@3.0.0    # JS minifier run for production mode
es5-shim@4.8.1                # ECMAScript 5 compatibility for older browsers
ecmascript@0.16.10              # Enable ECMAScript2015+ syntax in app code
typescript@5.6.3              # Enable TypeScript syntax in .ts and .tsx modules
shell-server@0.6.1            # Server-side component of the `meteor shell` command
hot-module-replacement@0.5.4  # Update client in development without reloading the page


static-html@1.4.0             # Define static page content in .html files
react-meteor-data       # React higher-order component for reactively tracking Meteor data
dispatch:mocha
accounts-base@3.0.3
accounts-password@3.0.3
accounts-passwordless@3.0.0
meteortesting:mocha

here is the error :

[[[[[ Tests ]]]]]

=> Started proxy.
=> Started HMR server.
=> Started MongoDB.
W20241129-15:33:33.416(1)? (STDERR) packages/core-runtime.js:189
W20241129-15:33:33.423(1)? (STDERR)             throw error;
W20241129-15:33:33.423(1)? (STDERR)             ^
W20241129-15:33:33.424(1)? (STDERR) 
W20241129-15:33:33.424(1)? (STDERR) Error: Cannot find module 'fibers'````

Have you read the migration docs from meteor 2 to meteor 3?

I didnt see anythin about mocha testing there … All my project works like a charm with meteor 3.1 .

I am unable to locate any references to “meteortesting” on the webpage you shared regarding “meteortesting.”

You may wish to indicate the specific location where “meteortesting” is mentioned or provide additional details about your post.

It means that your testing package depends on fiber which needs to be updated to a version that does not

No need to. I have full confidence on your searching skills. If you didn’t find any, then it’s not there

TLDR : it was the dispatch:mocha package

For the record, i have made a new project because I was unable to know which package was needing Fibers. And finally found it.