'use strict';

/* eslint-disable no-var, prefer-template */
var uppercasePattern = /[A-Z]/g;
var msPattern = /^ms-/;
var cache = {};

function toHyphenLower(match) {
  return '-' + match.toLowerCase()
}

function hyphenateStyleName(name) {
  if (cache.hasOwnProperty(name)) {
    return cache[name]
  }

  var hName = name.replace(uppercasePattern, toHyphenLower);
  return (cache[name] = msPattern.test(hName) ? '-' + hName : hName)
}

module.exports = hyphenateStyleName;