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I met some trouble when I try to upload a file to some OSS server. The console report ‘ClassCastException’ and I can’t cast a ArrayBuffer to Blob

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Thank you for reply! But it doesn’t match.

<https://developer.mozilla.org/en-US/docs/Web/API/Blob/Blob#parameters>

As WA you can use:
```reader.result.unsafeCast&lt;Array&lt;dynamic&gt;&gt;()```

Thanks, there is no doubt that `reader.result.unsafeCast&lt;Array&lt;dynamic&gt;&gt;`  is instance of `Array&lt;dynamic&gt;` , but Js can’t find the `@@iterator` property for `Array&lt;dynamic&gt;`

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```val buffer = reader.result as ArrayBuffer
val blob = Blob(arrayOf(buffer))```
?

I think I got the Blob correctly. But maybe I need to read the Ktor document again to solve this serialized problem. Thank you!

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