Refactored constants, added token format validation, flexible parameter parsing, and Jest unit testing.

[0xCaponte]

Added:

• constants.js to centralize the various constants used
• jwtValidator.js for format and algorithm validation of the JWT token. Only well formatted HS256 should pass
• argsParser.js for flexible argument parsing and improved help message by using Yargs
• index.test.js to replace test.js using jest and the new argument-flags
• Added all the git contributors to the package.json (ordered alphabetically)
• Added VSCode folders to the gitignore

Tests (with Jest):

• Unit-Tests for the JwtValidator
• The logic in test.js is now in index.test.js

Comments:

• Jest is still working on the ES integration, that is why --experimental-vm-modules is used for testing
• A refactoring of the index.js might make a more complete test of the "whole" logic easier/faster.

[0xCaponte]

Updating the README.md for the new argument format would also be needed:
jwt-cracker -t <token> [-a <alphabet>] [--max <maxLength>]

[lmammino]

Thanks for the awesome contribution! 🤟🏽

[lmammino]

The tests seems to be breaking, could you please have a look at them? @0xCaponte ?

[0xCaponte]

I had a wrong class name. Now all tests pass locally.

[lmammino]

Published as 3.0.0! https://github.com/lmammino/jwt-cracker/releases/tag/3.0.0

Thanks again for the contribution!

FYI, there's also a distribute version of this tool: lmammino/distributed-jwt-cracker