A tool to generate modernity signatures for JavaScript projects.

• Clone this repository
• Make sure you are using node version 22.11
• Run npm install to install dependencies

This guide is for windows and linux systems only

• Determine the owner and name of the GitHub repository that you want to generate a signature for
• Open a terminal
• Run node ./run.js --owner=<owner> --repo=<repo>
  • You can optionally add a max date parameter --maxDate=<yyyy-mm-dd> to prevent any releases after that date from being taken into account

For visualization of the result, you can use the plots.ipynb file in the root of this repository. It has been created using jupyter notebook version 7.2.2. Other versions might work but have not been tested.

• Only ECMAScript versions ES3 to ES15 are taken into account. Features introduced before ES3 are counted as ES3 features. (This is due to espree supporting only from ES3 onwards)
• Signatures are generated for every release of a repository, if no releases exist within GitHub, than there will be no signature generated.

• *tempsig_gen** folders sometimes fail to get deleted after signature generation. After the signature generation is done you can safely delete these folders manually.