Describe the bug
The extension host crashes on debugging (Another reproduction of #1911). Unfortunately this is a proprietary project so I can't share an immediate reproduction, but I'll share whatever I can that can help pinpoint what causes the crash.

To Reproduce
Steps to reproduce the behavior:

1. Try to debug JavaScript in a project with very large source maps.

Log File

vscode-debugadapter-f7de7273.json

VS Code Version: 1.97.2

Additional context

Another reproduction of #1911