expose react hook internals

reactHooks.js

(function() {
  var noop = function() {};
  var h = __REACT_DEVTOOLS_GLOBAL_HOOK__;
  var helpers = h.helpers[ Object.keys(h.helpers)[0] ];
  window.helpers = helpers;
  /*helpers.walkTree(
    noop,
    function(r) {
      window.root = r;
    }
  );*/

  window.findInstancesByName = function(name) {
    var i = [];
    helpers.walkTree(
      function(n) {
        const t = n._currentElement.type;
        if (typeof t === 'function' && name === t.name) {
          i.push(n._instance);
        }
      },
      noop
    );
    return i;
  }

  window.findInstancesByTag = function(tagName) {
    var i = [];
    helpers.walkTree(
      function(n) {
        if (n._tag === tagName) {
          i.push(n._currentElement._owner._instance);
        }
      },
      noop
    );
    return i;
  };

  window.findInstancesByClass = function(className) {
    var i = [];
    helpers.walkTree(
      function(n) {
        if (n._hostNode && n._hostNode.className && n._hostNode.className === className) {
          i.push(n._currentElement._owner._instance);
        }
      },
      noop
    );
    return i;
  };

  window.findInstanceByName = function(name) {
    return window.findInstancesByName(name)[0];
  };

  window.findInstanceByTag = function(tagName) {
    return window.findInstancesByTag(tagName)[0];
  };

  window.findInstanceByClass = function(className) {
    return window.findInstancesByClass(className)[0];
  };
})();