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Minification, Testing, and Documentation

To run tests, build minified files, or build documentation you need node and grunt-cli on your system.

  • install NodeJS using the instructions on their website
  • use npm to install the GruntJS task runner for the command-line

      npm install -g grunt-cli

Now for any repository in which you want to use tools, install the Node dependencies and use Grunt to perform tasks. In the project’s root folder (e.g. <somepath>/platform/), run:

npm install


Once things are installed, you may run the tests or use grunt to perform tasks.

Build minified project files (default):


Build documentation:

grunt docs

Run tests:

grunt test

Source maps

Toolkitchen polyfills the HTML Imports specification. In order for code to be debuggable at run-time, scripts embedded in components are injected into <head> in the main document. Tools/browsers that support source maps will identify these scripts as belonging to their source components.

Debugging Shadow DOM

In Chrome, native Shadow DOM is not inspectable. That is, you can’t use the DevTools to drill down into a Shadow Root.

To be able to inspect Shadow DOM, turn on “Show Shadow DOM” in the DevTools general settings:

Enable "Show Shadow DOM" in the Devtools

After reloading the DevTools, Shadow DOM is inspectable and renders as #document-fragments in the tree.