Function normalizeClassList

src/forest/method/spec.ts:109–132

(
  classList: ClassListMap | ClassListArray,
  cb: (property: ClassListProperty) => void,
)

}

function normalizeClassList(
  classList: ClassListMap | ClassListArray,
  cb: (property: ClassListProperty) => void,
) {
  if (Array.isArray(classList)) {
    classList.forEach(className => {
      const name =
        typeof className === 'string'
          ? classListArray(className)
          : className.map(optionalClass => classListArray(optionalClass || ''))
      const enabled =
        typeof className === 'string'
          ? true
          : className.map(optionalClass => optionalClass !== null)

      cb({name, enabled})
    })
  } else {
    forIn(classList, (enabled, names) => {
      const name = classListArray(names)
      cb({name, enabled})
    })
  }
}

function classListArray(classNames: string): string[] {
  return classNames