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flutter web DioException“TypeError: Instance of 'HttpRequestEventTarget': type 'HttpRequestEventTarget' is not a subtype of type 'HttpRequest'” about dio HOT 3 CLOSED

ZhangZeQiao avatar ZhangZeQiao commented on July 30, 2024
flutter web DioException“TypeError: Instance of 'HttpRequestEventTarget': type 'HttpRequestEventTarget' is not a subtype of type 'HttpRequest'”

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Comments (3)

AlexV525 avatar AlexV525 commented on July 30, 2024

#2157 (comment) Please follow the comment to reproduce, rather than create custom implementations. As I've stated, I'm running on Flutter Web with our example and reproducing no issues.

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AlexV525 avatar AlexV525 commented on July 30, 2024

It is very likely your implementation imports libraries from the native platform, where HttpRequest is a subtype of Stream<Uint8List>, rather than HttpRequestEventTarget.

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ZhangZeQiao avatar ZhangZeQiao commented on July 30, 2024

I finally found the problem because I added the following content to web/index.html:

<head>
  ... ...
  <!-- This script adds the flutter initialization JS code -->
  <script src="flutter.js" defer></script>
  ... ...
  <script src="https://unpkg.com/vconsole@latest/dist/vconsole.min.js">
    // 调试台:https://github.com/Tencent/vConsole
  </script>
  <script>
    var vConsole = new window.VConsole();
  </script>
  ... ...
</head>

Adding this content will cause:
wasm streaming compile failed: TypeError: Failed to execute 'compile' on 'WebAssembly': An argument must be provided, which must be a Response or Promise object
falling back to ArrayBuffer instantiation

As a result, it can cause:
Error: DioException [unknown]: null
Error: TypeError: Instance of 'HttpRequestEventTarget': type 'HttpRequestEventTarget' is not a subtype of type 'HttpRequest'

Remove the content to use Dio normally!

But it's strange, last year this method was still working properly?!

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