This template is a starting point for building apps using Polymer Starter Kit with a custom gulp process leveraging polymer-build, the library powering Polymer CLI.
First, install Polymer CLI and generator-polymer-init-custom-build-es6 using npm (we assume you have pre-installed node.js).
npm install -g polymer-cli
npm install -g generator-polymer-init-custom-build-es6
Generate your new project using polymer init:
mkdir my-app
cd my-app
polymer init custom-build-es6
This command serves the app at http://localhost:8080 and provides basic URL
routing for the app:
polymer serve --open
Rather than rely on the usual polymer build command, this project gives you an
"escape hatch" so you can include additional steps in your build process.
The included gulpfile.js relies on
the polymer-build library,
the same library that powers Polymer CLI. Out of the box it will clean the
build directory, and provide image minification. Follow the comments in the
gulpfile.js to add additional steps like JS transpilers or CSS preprocessors.
npm run build
This command serves the minified version of the app at http://localhost:8080:
polymer serve build/
This command will run Web Component Tester against the browsers currently installed on your machine:
polymer test
The gulpfile already contains an example build step that demonstrates how to run image minification across your source files. For more examples, refer to the section in the polymer-build README on extracting inline sources.
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 have bundles created in the fallback bundled build).