Underscore.js chaining

chain.js

// Compose function
var cleanArray = _.compose(_.compact, _.uniq, _.flatten);
result = cleanArray(lottery);

// Chainable way
result = _.chain(lottery)
            .flatten()
            .uniq()
            .compact()
            .value()

// source: http://www.miniarray.com/blog/chaining-in-underscore