Wallaby requires that you create a configuration file which requires knowledge of Wallaby internals and also, in certain projects, Babel and Webpack.
Here's a few example apps I used to practice setting up Wallaby. In order of complexity:
First, a bare bones node app with virtually zero dependencies, mostly a 'Hello Wallaby' app.
Second, a front end app using the create-react-app package, for which we can copy-paste the suggested wallaby config.
Third and last, a production ready front-end boilerplate that uses Webpack, React, Mocha, Jasmine and other packages, called react-slingshot. Similar to 'create-react-app' but more complex, with different tooling.