Update JSTypedArray.swift

j-f1 · j-f1 · commit be1f916934c8 · 2020-09-15T10:11:04.000-04:00
diff --git a/Sources/JavaScriptKit/BasicObjects/JSTypedArray.swift b/Sources/JavaScriptKit/BasicObjects/JSTypedArray.swift
@@ -39,7 +39,8 @@ public class JSTypedArray<Element>: JSValueConvertible, ExpressibleByArrayLitera
         self.init(unsafe: jsObject)
     }
 
-    public init(objectRef jsObject: JSObjectRef) {
+    public init?(objectRef jsObject: JSObjectRef) {
+        guard jsObject.isInstanceOf(Element.typedArrayClass) else { return nil }
         _retain(jsObject.id)
         super.init(id: jsObject.id)
     }

Original file line number	Diff line number	Diff line change
`@@ -39,7 +39,8 @@ public class JSTypedArray<Element>: JSValueConvertible, ExpressibleByArrayLitera`
`39`	`39`	`self.init(unsafe: jsObject)`
`40`	`40`	`}`
`41`	`41`
`42`		`- public init(objectRef jsObject: JSObjectRef) {`
	`42`	`+ public init?(objectRef jsObject: JSObjectRef) {`
	`43`	`+ guard jsObject.isInstanceOf(Element.typedArrayClass) else { return nil }`
`43`	`44`	`_retain(jsObject.id)`
`44`	`45`	`super.init(id: jsObject.id)`
`45`	`46`	`}`