How to get list from different site using Sharepiont framework like cross-domain library

Hi Waqar,

It is possible to use JSOM or SP.RequestExecutor in SPFx's web parts too, when corresponding .js files are loaded explicitly, e.g.:

var hostweburl = _spPageContextInfo.webAbsoluteUrl;
​
var scriptbase = hostweburl + '/_layouts/15/';
​
$.getScript(scriptbase + 'SP.Runtime.js', function () {
  $.getScript(scriptbase + 'SP.js', function () { 
    $.getScript(scriptbase + 'SP.RequestExecutor.js', execCrossDomainRequest); 
   });
});
​
function execCrossDomainRequest () {
    var appweburl = '[..web absolute url..]';
    var executor = new SP.RequestExecutor(appweburl);
    executor.executeAsync({
        url: appweburl + '/_api/web/lists',
        method: 'GET',
        headers: { 
          "Accept": "application/json; odata=verbose" 
        },
        success: function(results) {
           console.log(results.body);
        },
        error: function(sender, args) {
            console.log('Error: ' + args.get_message() + ' ' + args.get_stackTrace());
        }
    });
}

P.S.

I can't check it for sure at the moment, yet this should work.