Frontend building is delegated to NPM and so leverages the NodeJS ecosystem.

In particular:

• a package.json file is used to configure frontend dependencies, needed tools and building scripts
• babel is used for ES6/7 and JSX transpiling integrated with the other tools (e.g. webpack)
• webpack-dev-server is used to host the development application instance
• mocha/expect is used as a testing framework (with BDD style unit-tests)
• webpack: as the bundling tool, for development (see webpack.config.js), deploy (see prod-webpack.config.js) and test (see test.webpack.js
• karma is used as the test suite runner, with several plugins to allow for custom reporting, browser running and so on; the test suite running is configured through different configuration files, for single running or continuous testing
• istanbul/coveralls are used for code coverage reporting
• eslint is used to enforce coding styles guidelines, the tool is configured using a .eslintrc file

Available scripts

• download dependencies and init developer environment

npm install

• start development instance

npm start

• start development instance with examples

npm run examples

• run test suite once

npm test

• run continuous test suite running

npm run continuoustest

• run single build / bundling

npm run compile

• run ESLint checks

npm run lint

• run tests from Maven

npm run mvntest

• build for travis

npm run travis