Method componentWillUnmount

CustomApps/reddit/index.js:223–229

()

	}

	componentWillUnmount() {
		gridUpdateTabs = gridUpdatePostsVisual = null;
		const viewPort = document.querySelector(this.viewportSelector);
		lastScroll = viewPort.scrollTop;
		viewPort.removeEventListener("scroll", this.checkScroll);
		this.configButton.deregister();
	}

	isScrolledBottom(event) {
		const viewPort = event.target;