gistfile1.txt

Object.keys(Case).map(function (k) {
 if (Case[k] instanceof Function) {return k}
}).filter(function (x) {return x} ).reduce(function (h, k) {
  h[k] =  Case[k]("attrClass");  return h
}, {})

{
  "of": "camel",
  "flip": "ATTRcLASS",
  "random": "aTTrClaSs",
  "lower": "attr class",
  "snake": "attr_class",
  "constant": "ATTR_CLASS",
  "camel": "attrClass",
  "kebab": "attr-class",
  "upper": "ATTR CLASS",
  "capital": "Attr Class",
  "pascal": "AttrClass",
  "title": "Attr Class",
  "sentence": "Attr class",
  "squish": "AttrClass"
}