proper.js

import { ERRORTYPES as error } from "./error";
import isNaN from "./isnan";

export default function proper(text) {
  if (text === undefined || text.length === 0) {
    return error.value;
  }
  if (text === true) {
    text = "TRUE";
  }
  if (text === false) {
    text = "FALSE";
  }
  if (isNaN(text) && typeof text === "number") {
    return error.value;
  }
  if (typeof text === "number") {
    text = "" + text;
  }

  return text.replace(/\w\S*/g, function(txt) {
    return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();
  });
}