The components Country and CountryChooser display data synchronously -- it is passed to their props.

The higher order component Promised decorates a component class to load props asynchronously from a promise.

These are combined in the main.js entry point to load country information from HTTP+JSON APIs.

Prerequisites:

• node and npm
• Gnu Make & the standard Unix command-line utilities
• jq

On MacOS X these can all be installed with Homebrew.

To build:

% npm install
% make

To run:

Execute the command:

% make available

Then open http://localhost:8000/ in a modern web browser.