Svelte 5: structuredClone tries to clone proxy object instead of its contents #13562
Description
Describe the bug
Attempting to use structuredClone on any stateful object will result in an error with zero indication of a problem before running the code in both JavaScript and TypeScript.
Reproduction
Logs
No response
System Info
System: OS: Windows 11 10.0.22631 CPU: (20) x64 12th Gen Intel(R) Core(TM) i7-12700KF Memory: 48.76 GB / 63.85 GB Binaries: Node: 20.17.0 - C:\Program Files\nodejs\node.EXE npm: 10.8.2 - C:\Program Files\nodejs\npm.CMD pnpm: 9.3.0 - ~\AppData\Local\pnpm\pnpm.EXE bun: 1.1.30 - ~\.bun\bin\bun.EXE Browsers: Edge: Chromium (127.0.2651.74) npmPackages: svelte: ^5.0.0-next.264 => 5.0.0-next.264Severity
annoyance