proposal-slice-notation VS Super-Template-Tetris

> Switch statements

JS has had switch statements for a long time. Do you mean switch "expressions" that can be used inline? It's not pretty but JS has long supported that too using either eval() "hacks" or IIFEs: https://stackoverflow.com/questions/32451049/is-eval-the-onl...

Do you mean pattern matching? There are two Stage 1 TC39 proposals with different approaches to it:

More hands-on/direct: https://github.com/tc39/proposal-pattern-matching

More indirect: https://github.com/tc39/proposal-do-expressions

> list comprehensions

There are several libraries with strong Iterator support today that while not syntactically gorgeous do great jobs at allowing you to write simple list operations. Off the top of my head are IxJS and iter-tools, but also classic mainstays like up to date versions of lodash and Ramda.

There's a Stage 2 proposal to bring more of them into "the standard library": https://github.com/tc39/proposal-iterator-helpers

There's also a Stage 2 proposal for an operator to make the syntax generally nicer no matter the library: https://github.com/tc39/proposal-pipeline-operator

> array slicing

Array.prototype.slice() was added back in ES2015: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

Array.prototype.at() was "just added" in ES2022 for unary "slice" (ability to use negative indexes): https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

If you prefer syntax to function calls, there's a Stage 1 proposal still live for that: https://github.com/tc39/proposal-slice-notation

> better equality operators

That ship has probably sailed. Most projects at this point just have linter rules to standardize everything to the more reliable "triple equals" (===, and !==).

There are proposals for more structural equality functions in the standard library, though, for instance: https://github.com/tc39/proposal-array-equality

Both are stage 1 proposals that I hope get in there some day.

https://github.com/tc39/proposal-slice-notation

https://github.com/tc39/proposal-pattern-matching

Agreed... by nature a "command line game" would have to be turn oriented, I think. I was curious what kind of games where going to be linked here. It seems is mostly games that run on "text mode" on a terminal, as opposed to turn based games using the command line as UI.

Counter example: command line tetris! [0]. Although... still gives the player the advantage of "freezing time" on every move :-).

0: https://github.com/mattbierner/Super-Template-Tetris