whole_func_string: function convertCase(style) {
    const converted = {}
  
    for (const prop in style) {
      const key = prop.indexOf('--') === 0 ? prop : hyphenate(prop)
  
      converted[key] = style[prop]
    }
  
    if (style.fallbacks) {
      if (Array.isArray(style.fallbacks)) converted.fallbacks = style.fallbacks.map(convertCase)
      else converted.fallbacks = convertCase(style.fallbacks)
    }
  
    return converted
  }
func_code_string: function convertCase(style) {
    const converted = {}
  
    for (const prop in style) {
      const key = prop.indexOf('--') === 0 ? prop : hyphenate(prop)
  
      converted[key] = style[prop]
    }
  
    if (style.fallbacks) {
      if (Array.isArray(style.fallbacks)) converted.fallbacks = style.fallbacks.map(convertCase)
      else converted.fallbacks = convertCase(style.fallbacks)
    }
  
    return converted
  }
func_documentation_string: Convert camel cased property names to dash separated.
  
  @param {Object} style
  @return {Object}