Blob in ie10 throw error: InvalidStateError #1238

caijf · 2023-04-20T06:30:44Z

What started as a problem of Uint8Array is Blob. #1014

The following is the test code, please help to answer it:

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Test</title>
</head>
<body>
  <!-- No error is reported if it is not imported -->
  <script src="https://www.unpkg.com/core-js-bundle@3.30.1/minified.js"></script>

  <script>
    var str = 'hello world';
    var n = str.length;
    var uiArr = new Uint8Array(n);
    for (var i = 0; i < n; i++) {
      uiArr[i] = str.charCodeAt(i);
    }
    console.log(uiArr);
    console.log(new Blob([uiArr])); // in ie10 throw error: InvalidStateError
  </script>
</body>
</html>

zloirock · 2023-04-22T19:29:57Z

Yes, this is an issue. In IE10 and some early IE11 versions, core-js is forced to completely reimplement typed arrays - and native Blob and some other features do not properly work with polyfilled typed arrays.

I'm not sure what should core-js do in this case since adding workarounds for all possible cases is problematic.

I'll think about what can be done - maybe it makes sense to add a wrapper / workaround for Blob, maybe not.

zloirock added the compatibility label Apr 24, 2023

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Blob in ie10 throw error: InvalidStateError #1238

Blob in ie10 throw error: InvalidStateError #1238

caijf commented Apr 20, 2023

zloirock commented Apr 22, 2023 •

edited

Blob in ie10 throw error: InvalidStateError #1238

Blob in ie10 throw error: InvalidStateError #1238

Comments

caijf commented Apr 20, 2023

zloirock commented Apr 22, 2023 • edited

zloirock commented Apr 22, 2023 •

edited