You can run here:
- https://cekvenich.github.io/alp/ and view console and source.
Other:
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The main part of code is export class Custel1 extends AlpCustElement { // it imports the class that has x-data attribute setter
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Instead of walk, it maybe more efficent to have an event bus. I use one.
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Did not deal w/ style, as that is standard with known workarounds.