Add gulp as build system to generate UMD wrapper also for extensions

[xhaggi]

This adds a minimal build system based on gulp.js to add a UMD wrapper, minify and gzip the source files, including all extensions.

Related issue #1469

[matsp]

I think the project would really benefit from this PR - I was already on the way to do a PR myself after discovering that extensions are not minified. When gulp is not minimal enough, we could run uglify over all distributed files?

[alexpetros]

Incorporating a build system into htmx has been discussed extensively, and then ultimately rejected. See here for some of that discussion:

• Built Toolchain? #151
• Convert htmx to TypeScript 😍 #606
• Convert build system to rollup and support ESM #1250

It looks like there's a reasonable workaround too? #1469 (comment)

The question of minifying/UMDing the extensions is a fair one. I would suggest opening an issue dedicated to it and then we can discuss the best way to handle that. I know there's some possible willingness to at least automating the UMD situation, but it's a slightly touchy subject, so a PR can't really happen until we have some consensus on that.

[gnat]

lol

[xhaggi]

@gnat what are you trying to tell us?

[matsp]

He is telling us that the he does not understand the PR at all.

[matsp]

@xhaggi maybe we should provide a fork which code is identical but with your PR content?

[xhaggi]

@matsp That would certainly not be the right way to go, nor is it my intention.

[matsp]

Sure it's not the right way. This library is getting more and more attraction and thus people will ask about this PR. Providing just a pull solution to import in their projects will lead to the right amount of pressure in the maintainer team to think about it.
I don't really want to fork away, it's just about a alternative solution till this team is ready to change their minds.

[andryyy]

Imo it's still the correct decision.