[Webkit-unassigned] [Bug 202044] New: Block scoped variables should be visible across scripts

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=202044

            Bug ID: 202044
           Summary: Block scoped variables should be visible across
                    scripts
           Product: WebKit
           Version: Safari 12
          Hardware: Macintosh
                OS: macOS 10.14
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: paul.varna at gmail.com

Const and let should be scoped to global context if used in top level script. (warning, global context is not the same as global object).
Explanation: https://www.youtube.com/watch?v=5LEuJNLfLN0
Reproduction:

<script>
  var one = true;
  const two = true;
</script>

<script type="module">
  var three = true;
  const four = true;
</script>

<script type="module">
  console.log({ one });
  console.log({ two });
  console.log({ three }); // should throw
  console.log({ four }); // should throw
</script>

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