falcor-http-datasource/src/getXMLHttpRequest.browser.js

This package contains falcor components for use in browsers.

'use strict';
module.exports = function getXMLHttpRequest() {
  var progId,
    progIds,
    i;
  if (global.XMLHttpRequest) {
    return new global.XMLHttpRequest();
  } else {
    try {
    progIds = ['Msxml2.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.4.0'];
    for (i = 0; i < 3; i++) {
      try {
        progId = progIds[i];
        if (new global.ActiveXObject(progId)) {
          break;
        }
      } catch(e) { }
    }
    return new global.ActiveXObject(progId);
    } catch (e) {
    throw new Error('XMLHttpRequest is not supported by your browser');
    }
  }
};