How to use the fbjs/lib/CSSCore.removeClass function in fbjs

var endListener = function (e) {
      if (e && e.target !== node) {
        return;
      }

      clearTimeout(timeout);

      CSSCore.removeClass(node, className);
      CSSCore.removeClass(node, activeClassName);

      ReactTransitionEvents.removeEndEventListener(node, endListener);

      // Usually this optional callback is used for informing an owner of
      // a leave animation and telling it to remove the child.
      if (finishCallback) {
        finishCallback();
      }
    };

var endListener = function (e) {
        if (e && e.target !== node) {
          return;
        }

        clearTimeout(timeout);

        CSSCore.removeClass(node, className);
        CSSCore.removeClass(node, activeClassName);

        ReactTransitionEvents.removeEndEventListener(node, endListener);

        // Usually this optional callback is used for informing an owner of
        // a leave animation and telling it to remove the child.
        if (finishCallback) {
          finishCallback();
        }
      };

var endListener = function (e) {
      if (e && e.target !== node) {
        return;
      }

      clearTimeout(timeout);

      CSSCore.removeClass(node, className);
      CSSCore.removeClass(node, activeClassName);

      ReactTransitionEvents.removeEndEventListener(node, endListener);

      // Usually this optional callback is used for informing an owner of
      // a leave animation and telling it to remove the child.
      if (finishCallback) {
        finishCallback();
      }
    };

var endListener = function(e) {
      if (e && e.target !== node) {
        return;
      }

      clearTimeout(timeout);

      CSSCore.removeClass(node, className);
      CSSCore.removeClass(node, activeClassName);

      ReactTransitionEvents.removeEndEventListener(node, endListener);

      // Usually this optional callback is used for informing an owner of
      // a leave animation and telling it to remove the child.
      if (finishCallback) {
        finishCallback();
      }
    };

var endListener = function (e) {
      if (e && e.target !== node) {
        return;
      }

      clearTimeout(timeout);

      CSSCore.removeClass(node, className);
      CSSCore.removeClass(node, activeClassName);

      ReactTransitionEvents.removeEndEventListener(node, endListener);

      // Usually this optional callback is used for informing an owner of
      // a leave animation and telling it to remove the child.
      if (finishCallback) {
        finishCallback();
      }
    };

setTimeout(() => {
            CSSCore.removeClass(node, className);
            CSSCore.removeClass(node, activeClassName);
          }, delay);
        }

setTimeout(() => {
            CSSCore.removeClass(node, className);
            CSSCore.removeClass(node, activeClassName);
          }, delay);
        }

_removeConfirm = () => {
    this.isHiding = false;
    this.props.hideConfirm();
    const body = document.querySelector('body');
    CSSCore.removeClass(this.confirm, 'bounceOutUp');
    CSSCore.removeClass(this.confirm, 'bounceInDown');
    CSSCore.removeClass(body, 'toastr-confirm-active');
  };

_clearTransition = () => {
    const node = this.toastrBox;
    CSSCore.removeClass(node, this.transitionIn);
    CSSCore.removeClass(node, this.transitionOut);
  };

_removeConfirm = () => {
    this.isHiding = false;
    this.props.hideConfirm();
    const body = document.querySelector('body');
    CSSCore.removeClass(this.confirm, 'bounceOutUp');
    CSSCore.removeClass(this.confirm, 'bounceInDown');
    CSSCore.removeClass(body, 'toastr-confirm-active');
  };