app.d.ts incorrectly defines 'data' prop on DS classes #105

The 'data' prop is currently defined as follows:

  /**
   * Extra properties
   * @return \{ key, value }
   */
  data: { key: str; value: all }

That defines 'data' as an object with two firm props, 'key' and 'value'. It doesn't define a dictionary of key/value pairs.
The @return statement is for functions, not props.

Proposal for replacement in all .d.ts files for 'data':

  /**
   * Extra properties
   * @type {{ [key: string]: any }}
   */
  data;

Please check for other type definitions that use @return or which define literals rather than a dictionary.