polyfills

polyfills copied to clipboard

Add element.dataset to list of unpatched custom-elements APIs

1

aomarks

[custom-elements]: `ShadowRoot.prototype.innerHTML` isn't patched.

1

This issue was previously tracked in https://github.com/webcomponents/custom-elements/issues/73, but got closed when the repo was archived after the polyfill moved here.

bicknellr

gecko 48 dispatch 'focus' event but intercept by polyfill

3

gecko 48 dispatch a event named 'focus'. but intercept by the polyfill. any suggest?

firegnu

[ShadyDOM] Mutation Observer callback is not called for shadow hosts

4

### Description Mutation Observer callback is not called when elements are added or removed from shadow host. ```html shadowHost.attachShadow({mode:'open'}).innerHTML = ``; var hostObserverCalled = false; (new MutationObserver((mutationsList)=>{ console.info('mutated'); hostObserverCalled =...

tomalec

[ShadyDOM] Node.prototype.replaceChild removes node when same ref_node is used

3

### Description When using `Node.prototype.replaceChild` with the same node as ref_node, the node gets cleaned. (eg. removed from its parent) ### Example https://jsbin.com/qajapuxupa/1/edit?html,console,output ### Steps to reproduce 1. Create a...

tmsns

Optimize exportparts tree with cache

2

We should be able to cache the exportsparts tree, maybe directly on each node, so that we don't need to walk the same exporting part ancestor more than once.

aomarks

ShadyParts: noPatch mode support

2

Need to ShadyDOM.wrap where appropriate.

aomarks

Make ShadyCSS Shadow Parts an optional shim

2

See https://github.com/webcomponents/polyfills/pull/329/files#r430699466 The most important reason to do this could be users who don't want to pay the byte cost of additional shadow parts support.

aomarks

Shady Parts: move some work to prepareTemplateDom if possible

2

The static parts of a template could be discovered once per template in `prepareTemplateDom`, which could give us a performance improvement. Would still need to account for dynamic DOM insertions,...

aomarks

Shady Parts: design for build step

2

Investigate whether/how an optional build step could be used to improve performance of shadow parts support in shady css.

aomarks