mimeTypesToExtensions = mimeTypes => {
  const extensions = mimeTypes.map(mimeTypeToExtension)

  return extensions.filter(hasValue)
}
Returns the corresponding file extensions from the provided MimeTypes.

Unlike `mimeTypeToExtension`, this will never return `undefined` values. MimeTypes
that aren't found are discarded.

@param {string[]} mimeTypes
@returns {string[]} Mapped file extensions each MimeType