Lit-html: ::part has been supported in Chrome 73 and ::theme soon (hopefully)

Created on 18 Jan 2019  路  2Comments  路  Source: Polymer/lit-html

I guess this is also part of the effort for webcomponentsjs's ShadyCSS to support that. What's the plan from the lit team for this feature?

picture motss

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Like Constructible StyleSheets, there's nothing really to do in lit-html for this, but there may be in LitElement.

picture justinfagnani on 20 Jan 2019
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I know that there are a couple solutions both with downsides. Turns out it is hard to polyfill performantly.

Polymer team has an experimental one. https://github.com/PolymerLabs/part-theme

Vaadin has a mixin that they use for their components. https://github.com/vaadin/vaadin-themable-mixin

stramel picture stramel on 18 Jan 2019
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Like Constructible StyleSheets, there's nothing really to do in lit-html for this, but there may be in LitElement.

justinfagnani picture justinfagnani on 20 Jan 2019
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