fix(intersection obs): handled edge case where component not visible (#115)

crisboarna · web-flow · commit d6ac7c75a3b8 · 2022-11-07T19:35:05.000+01:00
diff --git a/src/components/PlaceholderWithoutTracking.jsx b/src/components/PlaceholderWithoutTracking.jsx
@@ -51,7 +51,7 @@ class PlaceholderWithoutTracking extends React.Component {
 	}
 
 	componentWillUnmount() {
-		if (this.observer) {
+		if (this.observer && this.placeholder) {
 			this.observer.unobserve(this.placeholder);
 		}
 	}

Original file line number	Diff line number	Diff line change
`@@ -51,7 +51,7 @@ class PlaceholderWithoutTracking extends React.Component {`
`51`	`51`	`}`
`52`	`52`
`53`	`53`	`componentWillUnmount() {`
`54`		`- if (this.observer) {`
	`54`	`+ if (this.observer && this.placeholder) {`
`55`	`55`	`this.observer.unobserve(this.placeholder);`
`56`	`56`	`}`
`57`	`57`	`}`