proposal-array-grouping VS cli

Global iterator type is coming: https://github.com/tc39/proposal-iterator-helpers

But a method named `groupBy` on iterators traditionally means a different thing: https://github.com/tc39/proposal-array-grouping/issues/51#is...

Global iterable type it's too late for, since there's many extant iterables in the language and on the web which don't have it in their prototype chain and can't reasonably be changed.

Array grouping to combine like data into groups using Object.groupBy() and Map.groupBy().

Array Grouping: A proposal to make grouping of array items easier.

They are coming out with array.group() soon, which is supposed to also fulfil the use-case of partitioning :) - https://github.com/tc39/proposal-array-grouping.

https://github.com/tc39/proposal-array-grouping for those curious

I'm also looking forward to map.emplace() and arr.group() and iterator helpers.

At the end of the day, it comes down to whether browser vendors are willing to ship the feature even though it breaks said websites, and they do have visitor data to back those decisions. If the rule was "never break any website ever", you'd be able to block proposals you don't personally like by crafting a website that "gets broken" by that proposal.

At least in the array grouping proposal, they did evaluate amount and popularity of possibly breaking sites, before eventually renaming the method from .groupBy to .group

https://github.com/tc39/proposal-array-grouping/issues/37

The proposal is described here.

Remarkably, this is now a TC39 proposal.

Proposal, Polyfill

Because sometimes I make idiotic mistakes and I really don't want that embarrassing stuff out there where people can see. I ran head first into an npm bug once when I tried to symlink the README file which resulted in the thing getting published without a README.

https://github.com/npm/cli/issues/6746

Embarrassing. And then they slapped me with a stupid 24 hour count down on top of it. I seriously hate this thing.

This is the same NPM that made a change causing the `integrity` field to go silently missing from `package-lock.json` [0] when installing packages, and then also not complaining at any other time in the future.

[0] https://github.com/npm/cli/issues/4460

Node.js v21 includes npm v10.2.0, which notably introduces a new sbom command that allows you to generate a Software Bill of Materials (SBOM) for the current project. You can read more about the changes in recent NPM releases on GitHub.

npm ERR! This is an error with npm itself. Please report this error at: npm ERR! https://github.com/npm/cli/issues

You'll need an AWS account and AWS credentials configured locally. We'll use pnpm but you could also use npm or yarn. The finished app is available on github.

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