Native ESM Support

[lukeed]

I have this 98% completed in local branch.

Allows you to run uvu with native ESM purely, making my current usage of -r esm completely optional.
This also has to maintain functionality within browsers, which will come for free.

[lukeed]

Will still be completed in the next day or two. Ran out of OSS time for the day~

[Hotell]

Luke is our hero !

[calebeby]

Hey Luke! I'd love to see this feature shipped! Is there anything I can help with?

[lukeed]

You can check it out on uvu@next right now.

I am/was not actively advertising it because it throws syntax errors in Node 8.x and Node 10.x – I'm being stubborn and want to hold onto support for those versions. I feel like there must be a way

[FredKSchott]

Node v8 is out of LTS no longer receiving updates, and enough major packages have dropped support that I rarely see anyone still using it (although they do exist).

Node v10 is trickier... not out of LTS until 2021. Would it be possible to provide Node v8 & v10 support via a separate entrypoint (uvu/cjs or uvu/node10) that gets built at publish time (ESM->CJS via rollup, for example?)

[lukeed]

Right. Node 8.x (and 10) are support goals simply because I have older packages that I'd like to test with uvu, so that they have a single CI workflow that covers all Node versions. I don't necessarily plan to have all modules raise their engines floor simply because Node bumped. With enough dependents, that causes more harm than good to the ecosystem -- especially if the code isn't changing.

[lukeed]

Last night dequal@2.0.0 went out, which added native ESM support (among other things). Now the remaining blocker for pure ESM resolutions is kpdecker/jsdiff#293

I still have to figure out my Node 8.x and 10.x workarounds -- haven't had time to dig back into that yet but I remain hopeful.

[talentlessguy]

@lukeed looks like that PR got merged :D

[lukeed]

Yup! But it hasn't been published

[talentlessguy]

@lukeed oh, waiting then :)

[talentlessguy]

@lukeed it's finally released!!!

I mean jsdiff with the fix

kpdecker/jsdiff@d358a57

[FredKSchott]

Woo!

[talentlessguy]

Is Native ESM still not supported by uvu because it still has an old (4.0.2) version of jsdiff?

or it should work already?

[TrySound]

uvu@next works fine

[lukeed]

Now available in v0.5.0 (stable) :)

[FredKSchott]

woo!