Promise { <state>: "pending" }

    async function getUserSkinJSContent() {
      var content = await ( new mw.Api() ).get( {
        action: 'query',
        titles: 'User:' + mw.config.get( 'wgUserName' ) + '/' + mw.user.options.get( 'skin' ) + '.js',
        prop: 'revisions',
        rvprop: 'content',
        indexpageids: true
      } ).done( function( data ) {
        var qry = data.query;
        return qry.pages[ qry.pageids[ 0 ] ].revisions[ 0 ][ "*" ];
      } );
      return content;
    }