First you have to install the following dependencies:

• node Node.js v5.7.0 or later
• npm Node Packaged Modules

After installing Node.js you can use the included npm package manager to download all dependencies:

git submodule init
git submodule update Lychee-front
cd Lychee-front/
npm install

The Gulpfile is located in Lychee-front/ and can be executed using the npm run compile command.

While developing, you might want to use the following command to automatically build Lychee everytime you save a file:

npm start

git pull
git submodule update