🐛 BUG: getPlatformProxy DO proxy "undefined" is not a valid JSON

[dario-piotrowicz]

Which Cloudflare product(s) does this pertain to?

Wrangler core

What version(s) of the tool(s) are you using?

wrangler@3.50.0

What version of Node are you using?

20

What operating system and version are you using?

Mac

Observed behavior

When using getPlatformProxy with recent version of wrangler (v>=3.46.0) it seems like DurableObject proxies don't properly work and when trying to fetch from them an response saying that undefined is not a valid JSON value is presented:

Expected behavior

Fetching from a DurableObject proxy should work as expected (as it worked with wrangler versions <= 3.45.0):

Minimal reproduction

https://github.com/dario-piotrowicz/getPlatformProxy-DO-JSON-issue-repro

[dario-piotrowicz]

Ok, this issue explains this 🥲: #5599 (comment)
(and that's also why we were unable to prevent this regression from happening)

[clibequilibrium]

Ok, this issue explains this 🥲: #5599 (comment) (and that's also why we were unable to prevent this regression from happening)

Thank you for this ! Same issue here on latest wrangler, we are forced to use downgraded version for now

[dario-piotrowicz]

@clibequilibrium the fix is on it's way in #5669 🙂