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=== tests/cases/compiler/arrayBufferIsViewNarrowsType.ts ===
var obj: Object;
>obj : Object
>Object : Object
if (ArrayBuffer.isView(obj)) {
>ArrayBuffer.isView(obj) : boolean
>ArrayBuffer.isView : (arg: any) => arg is ArrayBufferView
>ArrayBuffer : ArrayBufferConstructor
>isView : (arg: any) => arg is ArrayBufferView
>obj : Object
// isView should be a guard that narrows type to ArrayBufferView.
var ab: ArrayBufferView = obj;
>ab : ArrayBufferView
>ArrayBufferView : ArrayBufferView
>obj : ArrayBufferView
}
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