use terser for minification

[Antoine Martin]

​terser

The main difficulty is to ensure this is installed on all the build environment as there aren't many packages for it...

[brief]

Do you plan to use terser standalone? Or in combination with webpack (can bundle assets)?

If nodejs is used, I would also use forge.js as a dependency (as well as the other libraries if possible).

[Antoine Martin]

Do you plan to use terser standalone? Or in combination with webpack (can bundle assets)?

I don't know.
I profoundly dislike how some of those frameworks make it difficult to deploy things.
As things stand, I can just copy the js files, by hand if necessary, and things just work. That's invaluable to me.

[brief]

uglifyjs.terser exists in sid, ubuntu (disco, eoan, focal) only. It can be used where available.

If terser is not available, minifyjs or yui compressor is used after let/const is replaced by var.
Further JS changes (e.g. ES6) need manual adjustments to be compatible to minifying until terser can be used.

npm is not used to avoid a humongus build dependency, which we can't easily have on MacOS. Furthermore, there should only be one package manager or none (macos).

[migration script]

this ticket has been moved to: ​https://github.com/Xpra-org/xpra/issues/2709