Some code I wrote using ramda.js

sample-ramda.js

//getFieldDefinition :: key -> [a]  -> a
var getFieldDefinition = r.useWith(
  r.find, // #final function :: Relation -> [a] -> a
  r.propEq(1), //takes `key` where [1]==key  #function for 1st param
  r.identity //#placeholder func for 2nd param
)

// getFieldSpec :: String -> Object
// getFieldSpec('duration')
// > {type:'number', max:60, min: 1}
var getFieldSpec = r.memoize(
  r.compose(r.defaultTo({}), r.prop(2), r.defaultTo([]), getFieldDefinition(r.__, textFields)) 
)
//getFieldLabel :: fieldName -> fieldLabel
var getFieldLabel = r.memoize(r.compose(r.head, getFieldDefinition(r.__,textFields)))

// fieldInvalid :: Object -> Array -> String -> Boolean 
var fieldInvalid = r.curry(function(model,fieldDefinitions, key){
  
  // modelKeyValue :: Model {someKey: { value: someValue }} -> String someValue
  var modelKeyValue = r.pipe(r.prop(key), r.prop('value'))

  var fieldDef = getFieldDefinition(key, fieldDefinitions)

  if(!fieldDef) return false
  var attrs = fieldDef[2] || {}
  var value = modelKeyValue(model)
  return isValid(value, attrs)===false
})

//invalidFields :: model -> Array
function invalidFields(model){
  var fieldnames = getModelPropKeys(model)
  return r.filter(fieldInvalid(model, textFields), fieldnames)
}

//wrapItem :: item -> ReactDomNode
var wrapItem = (i)=>{ return (<li>{i}</li>) }
var itemizeFieldLabel = r.compose(wrapItem, getFieldLabel)

not all that recognisable as javascript. It's 25% comments, I'm the one that wrote it, and it still looks foreign.