Fix Flow typecheck for root node

muan · muan · commit fda99df72277 · 2019-11-04T17:18:24.000-05:00
diff --git a/src/clipboard-copy-element.js b/src/clipboard-copy-element.js
@@ -14,6 +14,7 @@ function copy(button: HTMLElement) {
     copyText(text).then(trigger)
   } else if (id) {
     const root = 'getRootNode' in Element.prototype ? button.getRootNode() : button.ownerDocument
+    if (!(root instanceof Document || ('ShadowRoot' in window && root instanceof ShadowRoot))) return
     const node = root.getElementById(id)
     if (node) copyTarget(node).then(trigger)
   }

Original file line number	Diff line number	Diff line change
`@@ -14,6 +14,7 @@ function copy(button: HTMLElement) {`
`14`	`14`	`copyText(text).then(trigger)`
`15`	`15`	`} else if (id) {`
`16`	`16`	`const root = 'getRootNode' in Element.prototype ? button.getRootNode() : button.ownerDocument`
	`17`	`+ if (!(root instanceof Document \|\| ('ShadowRoot' in window && root instanceof ShadowRoot))) return`
`17`	`18`	`const node = root.getElementById(id)`
`18`	`19`	`if (node) copyTarget(node).then(trigger)`
`19`	`20`	`}`