SOMOS Polymer App

This template, along with the polymer-cli toolchain, also demonstrates use of the "PRPL pattern" This pattern allows fast first delivery and interaction with the content at the initial route requested by the user, along with fast subsequent navigation by pre-caching the remaining components required by the app and progressively loading them on-demand as the user navigates through the app.

The PRPL pattern, in a nutshell:

• Push components required for the initial route
• Render initial route ASAP
• Pre-cache components for remaining routes
• Lazy-load and progressively upgrade next routes on-demand

Setup

Prerequisites

First, install Polymer CLI using npm (we assume you have pre-installed node.js).

npm install -g polymer-cli

Second, install Bower using npm

npm install -g bower

Initialize project from template

mkdir my-app
cd my-app
polymer init polymer-2-starter-kit

Start the development server

This command serves the app at http://127.0.0.1:8081 and provides basic URL routing for the app:

polymer serve

Build

The polymer build command builds your Polymer application for production, using build configuration options provided by the command line or in your project's polymer.json file.

Builds will be output to a subdirectory under the build/ directory as follows:

build/
  unbundled/

• unbundled is an unbundled, minified build with a service worker. ES6 code is served as-is. This build is for browsers that support HTTP/2 push.

Run polymer help build for the full list of available options and optimizations.

Preview the build

This command serves your bundled app.

polymer serve build/unbundled/

Run tests

This command will run Web Component Tester against the browsers currently installed on your machine:

polymer test

If running Windows you will need to set the following environment variables:

• LAUNCHPAD_BROWSERS
• LAUNCHPAD_CHROME

Read More here daffl/launchpad

Adding a new view

You can extend the app by adding more views that will be demand-loaded e.g. based on the route, or to progressively render non-critical sections of the application. Each new demand-loaded fragment should be added to the list of fragments in the included polymer.json file. This will ensure those components and their dependencies are added to the list of pre-cached components and will be included in the build.