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### Description
When I try to upgrade from Polymer 3.1 to Polymer 3.2,
When creating a `paper-dialog` (which depends on iron-a11y-keys-behavior),
An error is thrown
### Expected outcome
No …
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IINM, the polymer `fire()` method also sets the `cancellable` flag to `true`. This tripped me up in a recent upgrade since the code was testing `defaultPrevented` which was always false, even though `…
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I am using the Polymer framework, and specifically the polymer-build toolchain.
bower.json entry is:
```
"dependencies": {
"google-map": "GoogleWebComponents/google-map#^1.2.0"
}
```
We …
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### Use the Polymer CLI to create an application template and install Polymer
https://www.polymer-project.org/2.0/start/install-2-0
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`inputElement` does not return the native HTML input element but instead returns ``.
This almost certainly has to do with Polymer 2 doing away with the `is` attribute and requiring the use of `` as…
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As we all know polymer has released its 2.x version(though in preview mode) .We can upgrade the source code from 1.x to 2.x.
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what I did:
polymer init
select polymer-2-starter-kit
polymer serve
open the site in IE11, got a completely blank page, console shows these warnings:
HTML1414: Unexpected character: U+0021 EXCL…
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### Steps to reproduce
- Generated a Vaadin project via start.sprint.io (gradle build)
- In IDEA, installed Designer plugin
- select a folder/package below the top level, or the 1st level ( e.g.…
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i have some issues when using dhtmlx-gantt with polymer.
here are my code. it just shows data without style.
```
import { gantt } from 'dhtmlx-gantt';
import {computed, customElement, property} …
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I tried to convert the Polymer 2 stater-kit example to Polymer 3 and it fails to load in the browser. I'm using
polymer --version: 1.7.7
node --version: v8.11.3
npm --version: 6.3.0
bower --vers…