prefixer.js

const WEBKIT = 'Webkit';
const MICROSOFT = 'Ms';

const properties = {
  transform: [WEBKIT, MICROSOFT]
};

function capitalize (string) {
  return string.charAt(0).toUpperCase() + string.substr(1);
}

function getPrefixes (property, value) {
  return properties[property].reduce(function (acc, item) {
    acc[`${item}${capitalize(property)}`] = value;
    return acc;
  }, {});
}

function addPrefixesTo (style, property, value) {
  const vendor = getPrefixes(property, value);
  for (const prefix in vendor) {
    style[prefix] = vendor[prefix];
  }

  return style;
}

function prefixer (style, defaultValue = {}) {
  const _style = defaultValue;
  for (const property in style) {
    _style[property] = style[property];
    if (properties[property]) {
      addPrefixesTo(_style, property, style[property]);
    }
  }

  return _style;
}

export default prefixer;