withDefaults.js

const l = console::console.log
const safeProp = prop => R.compose(S.toMaybe, R.prop(prop))
const withDefault = R.curry((def, safeFun) => (...args) => {
  const maybe = safeFun(...args)
  return S.maybe(def, R.identity, maybe)
})


const name = withDefault('anon', safeProp('name'))


l(name({name: 'foo'}))
l(name({nope: 'foo'}))