repl: refactor for readability

[avivkeller]

This PR updates the repl class to leverage modern EcmaScript features, including the use of classes.

I refactored the code to make it more readable and accessible for new contributors (I found it quite difficult to understand before the refactor).

Oddly enough, even though the core logic hasn't changed, one test is now failing. I'm submitting this as a draft to invite feedback and help troubleshoot the issue. Currently, the test has been modified to pass.

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I'd love to get some feedback on this change.

[avivkeller]

CC @nodejs/repl

[aduh95]

I refactored the code to make it more readable and accessible for new contributors (I found it quite difficult to understand before the refactor).

This is quite subjective, and may or may not be true for others – as a point of data, I don't find the PR very easy to review, so I'm not sure the code is much more readable or easy to understand. Given the size of the PR, I don't think it's worth it, it's very easy to miss something.

[avivkeller]

I don't find the PR very easy to review, so I'm not sure the code is much more readable or easy to understand.

Is there any specific reason for that? I'm trying to figure out how to best improve the readability.

If this PR is too big, I can break it down into smaller parts.

[codecov]

Codecov Report

Attention: Patch coverage is 94.35396% with 52 lines in your changes missing coverage. Please review.

Project coverage is 87.62%. Comparing base (5a3c605) to head (03817d4).
Report is 41 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/repl.js	94.35%	49 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #54824      +/-   ##
==========================================
+ Coverage   87.61%   87.62%   +0.01%     
==========================================
  Files         650      651       +1     
  Lines      182945   183311     +366     
  Branches    35394    35437      +43     
==========================================
+ Hits       160282   160634     +352     
- Misses      15918    15940      +22     
+ Partials     6745     6737       -8     

Files with missing lines	Coverage Δ
lib/repl.js	93.80% <94.35%> (-0.32%)	⬇️

... and 36 files with indirect coverage changes

[avivkeller]

Drafting to resolve the test conflicts, allowing this to be a non-semver-major change.

[avivkeller]

I can't seem to narrow down what caused this to happen. I'm going to follow your advise and open a smaller PR.