data in createError() is missing in response

[ijkml]

Environment

node: 22.6.0
bun: 1.1.33

Reproduction

Run example from repo:

h3/examples/errors.ts

Lines 20 to 25 in 7324eee

	throw createError({
	status: 500,
	message: "Fatal error",
	fatal: true,
	data: { foo: "bar" },
	});

(log below)

Describe the bug

It's currently not possible to use err.data to pass additional data to client-side.

Additional context

#823 (comment)

Logs

{
  "url": "/devices/lol/",
  "statusCode": 500,
  "statusMessage": "",
  "message": "Fatal error",
  "stack": [
    "at createError (./node_modules/h3/dist/index.mjs:78:15)",
    "at badParamError (./.nitro/dev/index.mjs:934:9)",
    "at Object.handler (./.nitro/dev/index.mjs:992:11)",
    "at ./node_modules/h3/dist/index.mjs:1906:43",
    "at process.processTicksAndRejections (node:internal/process/task_queues:95:5)",
    "at async Object.handler (./node_modules/h3/dist/index.mjs:1978:19)",
    "at async Server.toNodeHandle (./node_modules/h3/dist/index.mjs:2270:7)"
  ]
}

[iiio2]

@ijkml , according to h3 docs, it is recommended to throw errors instead of returning them using createError utility. You may check and try with it (https://h3.unjs.io/guide/event-handler#responses-types).