getFileExtension

Returns the extension of a file, guessed by its MIME type.
Returns an empty string on failure.
This is an offline method.
Can be called before authorization.
Can be called synchronously.

getFileExtension(mime_type, callback, data)

Field	Type	Description
mime_type	string	The MIME type of the file.

Example

• Get file's extension guessing only by its mime type.

  getFileExtension('application/javascript')

  Response:

  {
    ["@type"] = "text",
    text = "js"
  }