FunctionsCloud

JSON Parse error: Unexpected EOF when executing from console

May 18, 2025, 05:01

View on Discord

Votes

Replies

Participants

Unknown

Messages

razorOriginal post

NodeJS Developer

May 18, 2025, 03:46

Hi, I'm trying to test a piece of code and I can't figure out what I'm doing wrong. I've reduced the deployed main to just this

JavaScript

export default async ({ req, res, log, error }: any) => {
  log(Date.now())
  log(JSON.stringify(req, null, 2))
}

to debug. I'm trying to run an execution from the web console. Ive tried:

setting/unsetting the content-type: application/json header
body: {}, "{}", {"actual": "json"}, '{"actual": "json"}', some text, "some text"

But no matter what, I get this in the error console

SyntaxError: JSON Parse error: Unexpected EOF
    at <parse> (:0)
    at parse (native)
    at stringify (native)
    at <anonymous> (/usr/local/server/src/function/src/main.ts:7:12)
    at starDefault (/usr/local/server/src/function/src/main.ts:5:16)
    at <anonymous> (/usr/local/server/src/server.ts:172:20)
    at processTicksAndRejections (:12:39)

I'm using Bun1.1 as the runtime.

Summary

Developers are experiencing a JSON Parse error with the Bun1.1 runtime when executing from the console. The issue might be alternative runtime support. Solutions include porting to Node or ensuring a proper response is being returned at the end of the function. Finally, despite various test methods, the error persists, so further debugging is necessary.

Steven

May 18, 2025, 04:07

you need to return a response

Steven

May 18, 2025, 04:08

https://appwrite.io/docs/products/functions/develop#response

razor

NodeJS Developer

May 18, 2025, 04:12

Same thing

JavaScript

export default async ({ req, res, log, error }: any) => {
  log(Date.now())
  log(JSON.stringify(req, null, 2))
  return res.empty()
}

razor

NodeJS Developer

May 18, 2025, 04:16

If i just log(req) then I get

SyntaxError: JSON Parse error: Unexpected EOF
    at <parse> (:0)
    at parse (native)
    at stringify (native)
    at write (/usr/local/server/src/logger.ts:61:27)
    at log (/usr/local/server/src/server.ts:145:14)
    at <anonymous> (/usr/local/server/src/function/src/main.ts:7:3)
    at starDefault (/usr/local/server/src/function/src/main.ts:5:16)
    at <anonymous> (/usr/local/server/src/server.ts:172:20)
    at processTicksAndRejections (:12:39)

razor

NodeJS Developer

May 18, 2025, 04:26

Okay some more info:
Deploying the same code with node22 works as expected.
Trying to then switch this over to Bun gives me an error that npm is not installed

razor

NodeJS Developer

May 18, 2025, 04:26

Sounds like the issue is with the Bun1.1 runtime, I'll try porting to node later to see if that fixes things, but the support for Bun is one of the main reasons I switched from supabase

JSON Parse error: Unexpected EOF when executing from console

Need support?_