Serhii Kulykov

### Description I try to implement source maps generation for my vulcanized Polymer project using `gulp-sourcemaps`. But parsing one of source maps in browser is being broken, because I use...

Deprecate old flexbox syntax used by IE 10 to make Lighthouse happy

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### Description As of now, Polymer 2.0 is unlikely to support IE 10, due to Mutation Observer bugs and more. So, shall we still include old 2012 syntax prefixes? Lighthouse...

Move behavior description from HTML comment to JSDoc. Fixes #117

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/cc @rictic --- This change is [](https://reviewable.io/reviews/polymerelements/paper-item/118)

### Description The following warning is produced by `polymer-analyzer`: ``` Polymer.PaperItemBehaviorImpl = { ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ hostAttributes: { ~~~~~~~~~~~~~~~~~~~~~ role: 'option', ~~~~~~~~~~~~~~~~~~~~~ tabindex: '0' ~~~~~~~~~~~~~~~~~~~ } ~~~~~ }; ~~~~ ``` The reason...

This PR updates the link to the Web Components awesome list, which has been transferred and renamed: - Before: https://github.com/mateusortiz/webcomponents-the-right-way - After: https://github.com/web-padawan/awesome-web-components Background: @mateusortiz has created this repo, but...

Potentially related to #399 or #2983 - if so, feel free to close as duplicate. Here is the [reproduction](https://github.com/web-padawan/test-esbuild-import). Run `npm i && npm run build && npm start` and...

chore: fix incorrect npm version badges in READMEs

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## Description The `vaadin-select` had incorrect `@vaadin/vaadin-select` npm version badge in README (the one that refers to Vaadin 23), and `vaadin-side-nav` was apparently copied from there by mistake. This PR...

### Describe your motivation Follow-up from https://github.com/vaadin/web-components/pull/7204#discussion_r1523410953 Currently, we only have visual tests for `readonly` state without `value` set. It would be good to extend those. ### Describe the solution...

fix: observe tabs ID attribute changes and update panels

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## Description Fixes https://github.com/vaadin/flow-components/issues/6072 Here's the code example to reproduce the issue and test the fix: ```html Tab 1 Tab 2 Panel 1 Panel 2 ``` Put this to dev...

feat: add readonly property to checkbox and checkbox-group

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## Description Related to #688 Work in progress, the final design is missing. ## Type of change - Prototype ## Note According to [HTML test cases](https://russmaxdesign.github.io/accessible-forms/#readonly) and my tests, `aria-readonly`...