Install polymer-cli:

npm install -g polymer-cli

# Using CLI
mkdir shop
cd shop
polymer init shop

# Or cloning direct from GitHub
git clone https://github.com/Polymer/shop.git
cd shop
bower install

polymer serve

polymer test

Build presets provide an easy way to define common build configurations in your polymer.json file. There are 3 build presets we put in polymer.json file in Shop:

es5-bundled

• js: {minify: true, compile: true}
• css: {minify: true}
• html: {minify: true}
• bundle: true
• addServiceWorker: true
• addPushManifest: true
• insertPrefetchLinks: true

es6-unbundled

• js: {minify: true, compile: false}
• css: {minify: true}
• html: {minify: true}
• bundle: false
• addServiceWorker: true
• addPushManifest: true
• insertPrefetchLinks: true

es6-bundled

• js: {minify: true, compile: false}
• css: {minify: true}
• html: {minify: true}
• bundle: true
• addServiceWorker: true
• addPushManifest: true
• insertPrefetchLinks: true

Run the command to build the presets:

polymer build

Use polymer serve to serve a specific build preset of the app. For example:

polymer serve build/es5-bundled