Array.from caused infinite loop in IE 11. Remove it, since it's not actually needed.

Daniel Schmidt · Daniel Schmidt · commit 98f2f2d1f13d · 2017-05-09T10:30:56.000+02:00
diff --git a/src/intersection.js b/src/intersection.js
@@ -45,7 +45,7 @@ export function unobserve(element) {
       observerInstance.unobserve(element)
     }
 
-    const itemsLeft = Array.from(INSTANCE_MAP.values()).some(
+    const itemsLeft = INSTANCE_MAP.values().some(
       item => item.threshold === instance.threshold,
     )
 

Original file line number	Diff line number	Diff line change
`@@ -45,7 +45,7 @@ export function unobserve(element) {`
`45`	`45`	`observerInstance.unobserve(element)`
`46`	`46`	`}`
`47`	`47`
`48`		`- const itemsLeft = Array.from(INSTANCE_MAP.values()).some(`
	`48`	`+ const itemsLeft = INSTANCE_MAP.values().some(`
`49`	`49`	`item => item.threshold === instance.threshold,`
`50`	`50`	`)`
`51`	`51`