Shadow DOM for custom elements?

Issue description

Evaluate if there is any benefits if Topincs custom elements would make use of shadow DOM.

Developer comments

A shadow root is a new DOM root inside another DOM tree's leaf. The outer DOM tree is called _host_. The main motivation is encapsulation of style. When a custom-element is reused on various sites, the intended style gets changed on accident by rules that are applied to the host document.

Seems like a lot of effort for little gain since all custom elements are only available within Topincs.

Reporting date

2025-09-02

Reported by

Robert Cerny

Planned for version

Topincs Psi Ψ

Helpful webpages2

developer.mozilla.org/…ts/Using_shadow_DOM

dev.to/…m-matters-more-than-you-think-3cmm