Description should be language-agnostic (regarding the examples

There appears to be a problem with the Coffeescript version of this kata with respect to the Random Tests. I receive the following error message "RangeError: Maximum call stack size exceeded" when the Random Tests are performed. If I copy the first random test arguments and make a new Fixed test using those exact same arguments, the error message is not generated.

Deprecation warning in Rust (tests use an outdated function):

warning: use of deprecated associated function `chrono::NaiveDate::from_ymd`: use `from_ymd_opt()` instead
  --> src/lib.rs:54:36
   |
54 |         let mut first = NaiveDate::from_ymd(year, 1, 1);

C++ Translation.

Just realize i misunderstand the phrase the first in order of appearance

Example case: BAABB

If you think B is first in order of appearance, it's wrong.

A is correct answer. It can paraphrase 'the first in order of appearance which have highest length`

Rust: no random tests

Python new test framework should be used

JS: Should use Node v12 and the approriate assertion tools (mocha + chai).

Python new test framework should be used and 3.8 enabled

Python new test framework should be used and 3.8 enabled

Python new test framework should be used and 3.8 enabled