Comments (2)
This polyfill is not dead. We did reach a point where the specification is almost fully implemented. Some parts that we are lacking are either impossible or would result in significant performance degradations. In other words: we don't aim to be 100% correct, but as close to 100% as feasible.
It is still quite a slow polyfill to run.
Could you provide an example of where our polyfill is slow? Our intention is to write a performant polyfill, so we want to resolve performance issues.
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Tim's statement is correct. The polyfill is very close to feature complete, and the many of the remaining issues are either difficult to solve, or need extensive evaluation for performance.
Not sure what part of the polyfill you consider slow, but if you have a good reproduction, please file an issue in the monorepo: https://github.com/webcomponents/polyfills/issues
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Related Issues (20)
- Node.append() should be monkeypatched by custom-elements/src/Patch/Node.js HOT 2
- Use webcomponents-loader in webpack HOT 2
- Native ES6 classes do not work when the native-shim is in use. HOT 7
- Transpiling CEs to ES5 and loading them correctly HOT 1
- Object doesn't support property or method ... HOT 1
- Add support for `customElements.upgrade`.
- Constructor called twice in some cases HOT 2
- Duplicate declaration exception differs from original HOT 1
- CE polyfill is incompatible with babelHelpers class adapter HOT 4
- Modifying DOM in connectedCallback leads to wrong callback order for children. HOT 1
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- Compiled version of custom-elements.min.js in latest version 1.1.2 does not exist in npm HOT 2
- Question: why use __ce_shadowRoot instead of shadowRoot HOT 7
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- IE11/Edge errors SCRIPT28 and SCRIPT2343 (es5) HOT 2
- appreciate your feedback for custom element diagram HOT 7
- A browser extension overwrites HTMLElement.prototype.appendChild HOT 1
- Setting textContent to `null` or `undefined` incorrectly creates text with the string `null` or `undefined`
- Some errors thrown during define are squelched
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