es1995 VS proposal-change-array-by-copy

> The API matters, and readability matters.

Exactly, lodash should be part of the language. https://github.com/mlajtos/es1995

Yes, https://github.com/mlajtos/es1995

> It made the decision to extend prototypes. In hindsight, a huge mistake.

I think it was a mistake at the time, but I still believe prototypal inheritance is pretty great idea. And JS desperately needs standard library, which IMO should extend built-in prototypes, so the language would be more coherent. ES1995 [0] was a funny take on this direction, but people (mainly non-JS people) would like to seriously use it. Go figure.

[0]: https://github.com/mlajtos/es1995

(I was trying out some old school way with ES1995. I might rewrite it to TS one day.)

ES1995 agrees.

Thanks! I think we share a few aesthetic ideals :) I really like your work on L1 and New Kind of Paper, and just noticed ES1995 – if only it was true…

The new change array by copy methods (ES2023) will also work with tuples. So while you can't

Change Array by Copy

Stage 3 Change array by copy proposal offers methods like sortTo() that return a new array instead of mutating the original.

Note: there's a stage 3 proposal that introduces copy = arr.toSorted().

Change Array by Copy: Provides additional methods on Array.prototype and TypedArray.prototype to enable changes on the array by returning a new copy of it with the change.

The proposal is described here, with the other methods being:

Proposal, Polyfill

You're unlikely to see any new methods being added to JavaScript's Array that would modify an array in place like reverse() and sort() do. In fact some of the new methods that are being added are versions of reverse() and sort() (and splice()) that create copies rather than modifying the originals. Read more about them here: Proposal: Change Array by copy.

Since cloning is so common, a new specification has been written which has reached stage 3, which will give us a host of new ways to copy and then change an array. This proposal is called the "Change Array by Copy" proposal. Let's take a look at how it works.