Pokedex.org 
An index of Pokémon, built as a client-side JavaScript webapp. Powered by ServiceWorker, PouchDB, virtual-dom, and web workers.
See the Introducing Pokedex.org blog post for details on the architecture.
Developing
First, be sure to install dependencies:
npm install
Then start a dev server on localhost:9000:
npm run serve
To disable ServiceWorker:
NODE_ENV=testing npm run serve
Building
npm run build
This will write files to www/.
Bumping the ServiceWorker version
The ServiceWorker version is tied to the package.json version. So you can bump it by simply doing:
npm version patch
Building up the database via PokéAPI
Note: you don't need to build up the database to start developing; these are just steps to generate the database files (src/assets/*.txt) from scratch.
This site uses data provided by PokéAPI. To build up the database, you'll need to run:
./node_modules/.bin/babel-node bin/build-monsters-database.js
./node_modules/.bin/babel-node bin/build-descriptions-database.js
./node_modules/.bin/babel-node ... # there are several of these
Some of the build scripts pull from src/js/shared/data (which contains some files that I had to build myself by scraping Bulbapedia), whereas the main ones pull from the live PokeAPI. (I never got the local PokeAPI working correctly, so I just pulled from the remote.)
Debugging
You can add ?highPerfAnims=1 to the URL to force high-performance animations to run. (Normally they are disabled for Firefox and Android <5.)
Credits
Thanks to PokeAPI and Bulbapedia for the Pokémon data, and of course to Nintendo, Game Freak, and The Pokémon Company for making such an awesome series of games.