https://community.openhab.org/t/java223-scripting-script-with-java-on-openhab-5-0-1-0-6-0-0-0/159853/28 suggests that the transitive dependencies, fixed by #4922, still do not work, when a ScriptEngine transformation utilizes a library, versus a script utilizing a library:

Changing a lib dependency SHOULD force recompilation of script that declares depending on this library. It works for “standard” script (i.e. I tested a script created from the GUI in the “script” section, and it runs every time with updated lib), but it doesn’t work for a transformation script.
I debugged a little, and I found that transform scripts are not registered in the dependency tracking system, at all.

Steps to reproduce with OH openHAB 5.1.0 Build 4836:

• I create a very simple npm package with index.js containing just

var a = "A"
module.exports = {
  a
};

and npm pack creates nmod1-1.0.0.tgz - change manually the file extension to tgz, I put .txt so that I can upload tgz file in github

• I installed it in openhab/automation/js with npm install ~/nmod1-1.0.0.tgz
• With an item String x I create a file sitemaps/cd.sitemap with content:

sitemap cd label="B3" {
  Text item=x label="Y [JS(|require('nmod1').a + ' E'):%s]"
}

Its value is, correctly, Y: A E.

• I change in openhab/automation/js/node_modules/nmod1/index.js the first line to var a = "M" and reload the sitemap in the browser. The value does not change, unless I modify the function in the sitemap. That change can mean for instance substituting E with something else, but not modifying Y .

That said, the dependency tracking for ScriptEngines/JSR223 in openhab-core does not work yet, when a transformation is written in a Script/Rule engine. When a file, imported by a transformation is changed, the transformation is not recompiled, until the source code of the transformation is changed, too.

The above is for JavaScript(GraalVM).