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https://github.com/web-padawan/polymer3-webpack-starter
Polymer 3 starter built with Vaadin components and Vaadin.Router library, using webpack and modern tools
https://github.com/web-padawan/polymer3-webpack-starter
pwa-boilerplate pwa-example starter-kit web-components webcomponents webpack-boilerplate
Last synced: 4 days ago
JSON representation
Polymer 3 starter built with Vaadin components and Vaadin.Router library, using webpack and modern tools
- Host: GitHub
- URL: https://github.com/web-padawan/polymer3-webpack-starter
- Owner: web-padawan
- Archived: true
- Created: 2018-05-31T19:48:46.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2020-06-30T10:02:20.000Z (almost 4 years ago)
- Last Synced: 2024-03-08T04:35:38.498Z (4 months ago)
- Topics: pwa-boilerplate, pwa-example, starter-kit, web-components, webcomponents, webpack-boilerplate
- Language: JavaScript
- Homepage: https://polymer3-webpack-starter.herokuapp.com
- Size: 1.55 MB
- Stars: 101
- Watchers: 9
- Forks: 21
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Lists
- awesome-pwa-starter-kit - Polymer 3 Webpack Starter
README
[](https://snyk.io/test/github/web-padawan/polymer3-webpack-starter)
[](https://github.com/prettier/prettier)
[](https://github.com/ebidel/lighthouse-badge)
# Polymer 3 Webpack Starter
This is an example project demonstrating how you can build a frontend part of the JavaScript
application using [Vaadin components](https://vaadin.com/components) and [Vaadin Router](https://github.com/vaadin/vaadin-router) library, and leverage the benefits of the modern tools.
[Lumo version ↗](https://polymer3-webpack-starter.herokuapp.com/)
|
[Material version ↗](https://polymer3-material-starter.herokuapp.com/)
## Features
- Latest Polymer 3 and up-to-date [webcomponentsjs](https://github.com/webcomponents/webcomponentsjs) polyfill
- UI built using latest [Vaadin components](https://vaadin.com/components) shipped as ES modules
- Application with two different themes: [Lumo](https://github.com/vaadin/vaadin-lumo-styles) and [Material](https://github.com/vaadin/vaadin-material-styles)
- [Vaadin Router](https://vaadin.com/router) configured for code splitting and lazy loading
- [webpack 4](https://github.com/webpack/webpack) for easy development and production bundling
- Up-to-date [Babel 7](https://github.com/babel/babel) verified to work nice with Custom Elements
- Modern build for evergreen browsers using [BabelMultiTargetPlugin](https://github.com/DanielSchaffer/webpack-babel-multi-target-plugin)
- Minification of JavaScript using [Terser](https://github.com/terser-js/terser) supporting ES2015+
- Minification of HTML and CSS in [tagged template literals](https://github.com/cfware/babel-plugin-template-html-minifier)
- Automatic service worker generation using [Workbox](https://github.com/GoogleChrome/workbox)
- Automatic [bundle analysis](https://github.com/webpack-contrib/webpack-bundle-analyzer) and report generation
- Web server using [express](https://github.com/expressjs/express) and [History API](https://github.com/bripkens/connect-history-api-fallback) middleware
- Compressing static files for production using [gzip](https://github.com/webpack-contrib/compression-webpack-plugin) and [Brotli](https://github.com/mynameiswhm/brotli-webpack-plugin) algorithm
- Serving compressed files using [express-static-gzip](https://github.com/tkoenig89/express-static-gzip) middleware
## Install dependencies
```sh
npm i
```
## Start the development server
Start `webpack-dev-server` on localhost `http://127.0.0.1:3000`:
```sh
npm run dev
```
## Lint JS
```sh
npm run lint:js
```
## Lint CSS
```sh
npm run lint:css
```
## Lint JS and CSS
```sh
npm run lint
```
## Build
Run production build:
```sh
npm run build
```
Serve the built output on localhost `http://127.0.0.1:8000`:
```sh
npm start
```
## Visualize build output
Run production build and start HTTP server to show bundle report:
```sh
npm run build:analyze
```
## Material version
Check out [material](https://github.com/web-padawan/polymer3-webpack-starter/tree/material) branch for [Material version](https://polymer3-material-starter.herokuapp.com/) of the starter, and a [full diff](https://github.com/web-padawan/polymer3-webpack-starter/compare/material) of changes.
## Known limitations
- Using `import.meta` suggested by Polymer docs is not supported out of the box, see [webpack/webpack#6719](https://github.com/webpack/webpack/issues/6719).
Support can be added with [babel-plugin-bundled-import-meta](https://github.com/cfware/babel-plugin-bundled-import-meta) or
webpack loader [import-meta-url-loader](https://github.com/open-wc/open-wc/blob/master/packages/webpack/loaders/import-meta-url-loader.js)