refactor!: convert to Polymer 3 (#134)

.eslintrc.json

@@ -1,19 +1,15 @@
 {
-    "extends": ["vaadin", "eslint:recommended"],
-    "env": {
-        "browser": true,
-        "node": true,
-        "es6":true
-    },
-    "plugins": [
-        "html"
-    ],
-    "globals": {
-        "Vaadin": false,
-        "Polymer": false,
-        "CustomElements": false
-    },
-    "rules": {
-        "no-console": ["error",{"allow": ["warn", "error"] }]
-    }
+  "extends": [
+    "eslint:recommended",
+    "plugin:prettier/recommended"
+  ],
+  "plugins": ["prettier"],
+  "env": {
+    "browser": true,
+    "es6": true
+  },
+  "parserOptions": {
+    "sourceType": "module",
+    "ecmaVersion": 2020
+  }
 }

.github/workflows/sauce.yml

@@ -0,0 +1,28 @@
+name: sauce
+
+on:
+  push:
+    branches:
+      - '**'
+    tags-ignore:
+      - '*.*'
+
+jobs:
+  unit-tests:
+    runs-on: ubuntu-latest
+    if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v1
+      with:
+        node-version: 12
+
+    - name: Install dependencies
+      run: npm install
+
+    - name: SauceLabs tests
+      env:
+        SAUCE_USERNAME: ${{ secrets.SAUCE_USERNAME }}
+        SAUCE_ACCESS_KEY: ${{ secrets.SAUCE_ACCESS_KEY }}
+      run: npm run test:sauce

.github/workflows/tests.yml

@@ -0,0 +1,40 @@
+name: tests
+
+on: [pull_request]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v1
+      with:
+        node-version: 12
+
+    - name: Install dependencies
+      run: npm install
+
+    - name: Check version
+      run: npm run check-version
+
+    - name: Lint JavaScript
+      run: npm run lint:js
+
+    - name: Lint CSS
+      run: npm run lint:css
+
+  unit-tests:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v1
+      with:
+        node-version: 12
+
+    - name: Install dependencies
+      run: npm install
+
+    - name: Unit tests
+      run: npm test

.gitignore

@@ -1,8 +1,7 @@
-.idea/
-bower_components/
-node_modules/
-travis.log
+bower_components
+node_modules
 package-lock.json
 yarn.lock
 coverage
-analysis.json
+dist
+analysis.json

.prettierrc

@@ -0,0 +1,6 @@
+{
+  "singleQuote": true,
+  "printWidth": 120,
+  "trailingComma": "none",
+  "htmlWhitespaceSensitivity": "strict"
+}

.stylelintrc

@@ -1,3 +1,6 @@
 {
-  "extends": "stylelint-config-vaadin"
-}
+  "extends": [
+    "stylelint-config-vaadin",
+    "stylelint-config-prettier"
+  ]
+}

README.md

@@ -1,22 +1,18 @@
-[![npm version](https://badgen.net/npm/v/@vaadin/vaadin-board)](https://www.npmjs.com/package/@vaadin/vaadin-board)
-[![Bower version](https://badgen.net/github/release/vaadin/vaadin-board)](https://github.com/vaadin/vaadin-board/releases)
-[![Build Status](https://travis-ci.org/vaadin/vaadin-board.svg?branch=master)](https://travis-ci.org/vaadin/vaadin-board)
-[![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/vaadin/web-components?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
-
- [![Published on Vaadin  Directory](https://img.shields.io/badge/Vaadin%20Directory-published-00b4f0.svg)](https://vaadin.com/directory/component/vaadinvaadin-board)
-[![Stars on vaadin.com/directory](https://img.shields.io/vaadin-directory/star/vaadinvaadin-board.svg)](https://vaadin.com/directory/component/vaadinvaadin-board)
-
-
-# \<vaadin-board\>
+# &lt;vaadin-board&gt;
 
 [Live Demo ↗](https://vaadin.com/components/vaadin-board/html-examples)
 |
 [API documentation ↗](https://vaadin.com/components/vaadin-board/html-api)
 
-
 [&lt;vaadin-board&gt;](https://vaadin.com/components/vaadin-board) is a Web component to create flexible responsive layouts and build nice looking dashboard.
 Vaadin Board key feature is how it effectively reorders the widgets on different screen sizes, maximizing the use of space and looking stunning.
 
+[![npm version](https://badgen.net/npm/v/@vaadin/vaadin-board)](https://www.npmjs.com/package/@vaadin/vaadin-board)
+[![Build Status](https://travis-ci.org/vaadin/vaadin-board.svg?branch=master)](https://travis-ci.org/vaadin/vaadin-board)
+[![Published on Vaadin Directory](https://img.shields.io/badge/Vaadin%20Directory-published-00b4f0.svg)](https://vaadin.com/directory/component/vaadinvaadin-board)
+[![Stars on vaadin.com/directory](https://img.shields.io/vaadin-directory/star/vaadinvaadin-board.svg)](https://vaadin.com/directory/component/vaadinvaadin-board)
+[![Discord](https://img.shields.io/discord/732335336448852018?label=discord)](https://discord.gg/PHmkCKC)
+
 ```html
 <vaadin-board>
   <vaadin-board-row>
@@ -44,29 +40,6 @@ Vaadin Board key feature is how it effectively reorders the widgets on different
 
 ### Installation
 
-The Vaadin components are distributed as Bower and npm packages.
-Please note that the version range is the same, as the API has not changed.
-You should not mix Bower and npm versions in the same application, though.
-
-Unlike the official Polymer Elements, the converted Polymer 3 compatible Vaadin components
-are only published on npm, not pushed to GitHub repositories.
-
-### Polymer 2 and HTML Imports compatible version
-
-Install `vaadin-board`: 
-
-```sh
-$ bower i vaadin/vaadin-board --save
-```
-
-Once installed, import it in your application:
-
-```html
-<link rel="import" href="bower_components/vaadin-board/vaadin-board.html">
-```
-
-### Polymer 3 and ES Modules compatible version
-
 Install `vaadin-board`:
 
 ```sh
@@ -79,33 +52,29 @@ Once installed, import it in your application:
 import '@vaadin/vaadin-board/vaadin-board.js';
 ```
 
-## Running demos and tests in browser
-
-1. Clone the repository
-`git clone https://github.com/vaadin/vaadin-board.git`
-
-1. Make sure you have [npm](https://www.npmjs.com/) installed.
+## Running API docs in a browser
 
-1. When in the `vaadin-element` directory, run `npm install` and then `bower install` to install dependencies.
+1. Fork the `vaadin-board` repository and clone it locally.
 
-1. Make sure you have [polymer-cli](https://www.npmjs.com/package/polymer-cli) installed globally: `npm i -g polymer-cli`.
+1. Make sure you have [node.js](https://nodejs.org/) 12.x installed.
 
-1. Run `polymer serve --open`, browser will automatically open the component API documentation.
-
-1. You can also open demo or in-browser tests by adding **demo** or **test** to the URL, for example:
+1. Make sure you have [npm](https://www.npmjs.com/) installed.
 
-  - http://127.0.0.1:8080/components/vaadin-board/demo
-  - http://127.0.0.1:8080/components/vaadin-board/test
+1. When in the `vaadin-board` directory, run `npm install` to install dependencies.
 
+1. Run `npm start`, browser will automatically open the component API documentation.
 
 ## Running tests from the command line
 
-1. When in the `vaadin-board` directory, run `polymer test`
+1. When in the `vaadin-board` directory, run `npm test`
+
+## Debugging tests in the browser
 
+1. Run `npm run debug`, then choose manual mode (M) and open the link in browser.
 
 ## Following the coding style
 
-We are using [ESLint](http://eslint.org/) for linting JavaScript code. You can check if your code is following our standards by running `npm run lint`, which will automatically lint all `.js` files as well as JavaScript snippets inside `.html` files.
+We are using [ESLint](http://eslint.org/) for linting JavaScript code. You can check if your code is following our standards by running `npm run lint`, which will automatically lint all `.js` files.
 
 
 ## Contributing