Peter Burns

Add compilation with closure compiler to travis for all elements

1

This is desirable as it will catch a number of bugs and documentation errors, as well as reducing the impedance mismatch for folks who want to compile Polymer. Steps: -...

See https://github.com/GoogleWebComponents/firebase-element/pull/87#issuecomment-174342352

Two issues that will need change: 1) It's in PolymerLabs 2) They have element subdirs and want a README.md for each subdir. e.g. https://github.com/PolymerLabs/app-layout/tree/header/app-box

Use a single definition per tag name

2

Update it when the tag is redefined. This way LatestCtor and the callbacks are updated for all instances immediately on redefinition. I'm not certain this change is an improvement in...

Don't use the constructor call trick when a custom element is constructed with new

2

We need to use the constructor call trick in the PivotCtor when the element has been created by the browser directly (e.g. document.createElement, or via the parser) because in that...

Separate code out into an implementaiton file that does not activate when imported.

1

The main index file behaves the same so this is backwards compatible. I'm working on using this library at google, and I want to make sure we only use it...

[reactive-element] Reset property to its initial value when attribute is removed.

10

### Should this be an RFC? - [X] This is not a substantial change ### Which package is this a feature request for? Lit Core (lit / lit-html / lit-element...

Feature request: tc39 Explicit Resource Management

1

This could be broken out into multiple features: - Symbol.dispose - Symbol.asyncDispose - `using` syntax - `await using` syntax - DisposableStack - AsyncDisposableStack Spec: https://github.com/tc39/proposal-explicit-resource-management Looks like Chrome is shipping...

A subclass that overrides DisposableStack#dispose must also override DisposableStack#[Symbol.dispose]

5

Consider code like: ```ts class NotifyingStack extends DisposableStack { dispose() { const wasDisposed = this.disposed; super.dispose(); if (!wasDisposed) { notify(); } } } ``` By my reading of https://tc39.es/proposal-explicit-resource-management/#sec-disposablestack.prototype-@@dispose this...