Error: "process is undefined" when using Cloudflare with Sveltekit (9.2.0)

[tarekfb]

Is there an existing issue for this?

• I have checked for existing issues https://github.com/getsentry/sentry-javascript/issues
• I have reviewed the documentation https://docs.sentry.io/
• I am using the latest SDK release https://github.com/getsentry/sentry-javascript/releases

How do you use Sentry?

Sentry Saas (sentry.io)

Which SDK are you using?

@sentry/sveltekit

SDK Version

9.2.0

Framework Version

No response

Link to Sentry event

No response

Reproduction Example/SDK Setup

export const handle: Handle = sequence(initCloudflareSentryHandle({
  dsn: "my-actual-dsn-here",
  tracesSampleRate: 1.0,
}), sentryHandle(), supabase, authGuard);

Steps to Reproduce

Follow instructions in new docs, and instructions in the pr for cloudflare & sveltekit support

Publish to cloudflare.
Error is printed to console, viewed in Cloudflare Real-time Logs under Functions for the build.

Expected Result

No error occurs.

Actual Result

Error occurs. I am not using environment anywhere in the sentry setup, so I'm not sure why this issue is occuring.

Logs:

{
  "truncated": false,
  "executionModel": "stateless",
  "outcome": "ok",
  "scriptVersion": {
    "id":redacted
  },
  "scriptName": "pages-worker--redacted-preview",
  "diagnosticsChannelEvents": [],
  "exceptions": [],
  "logs": [
    {
      "message": [
        {
         redacted
        }
      ],
      "level": "log",
      "timestamp": 1740572330174
    },
    {
      "message": [
        "ReferenceError: process is not defined"
      ],
      "level": "error",
      "timestamp": 1740572330174
    },
    {
      "message": [
        "ReferenceError: process is not defined"
      ],
      "level": "error",
      "timestamp": 1740572330174
    }
  ],
  "eventTimestamp": redacted
  "event": {
    "request": {
      "url": "https://redacted.pages.dev/",
      "method": "GET",
      "headers": {
        "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7",
        "accept-encoding": "gzip, br",
        "accept-language": "en,en-US;q=0.9,sv-SE;q=0.8,sv;q=0.7,zh-CN;q=0.6,zh;q=0.5,la;q=0.4",
        "cache-control": "max-age=0",
        "cf-connecting-ip": redacted
        "cf-ipcountry"redacted
        "cf-ray": redacted,
        "cf-visitor": "{\"scheme\":\"https\"}",
        "connection": "Keep-Alive",
        "host": "redacted.pages.dev",
        "priority": "u=0, i",
        "referer": "/",
        "sec-ch-ua": "\"Not(A:Brand\";v=\"99\", \"Google Chrome\";v=\"133\", \"Chromium\";v=\"133\"",
        "sec-ch-ua-mobile": "?0",
        "sec-ch-ua-platform": "\"Windows\"",
        "sec-fetch-dest": "document",
        "sec-fetch-mode": "navigate",
        "sec-fetch-site": "cross-site",
        "sec-fetch-user": "?1",
        "upgrade-insecure-requests": "1",
        "user-agent":redacted
        "x-forwarded-proto": "https",
        "x-real-ip": redacted
      },
      "cf": {
        "requestHeaderNames": {},
        "httpProtocol": "HTTP/3",
        "tlsCipher": "AEAD-AES128-GCM-SHA256",
        "continent": "EU",
        "asn": 2119,
        "clientAcceptEncoding": "gzip, deflate, br, zstd",
        "country":redacted
        "isEUCountry": "1",
        "verifiedBotCategory": "",
        "requestPriority": "",
        "tlsClientAuth": redacted
         tSHA1": ""
        },
        "tlsClientExtensionsSha1": "redacted
        "tlsExportedAuthenticator":redacted,
        "tlsVersion": "TLSv1.3",
        "colo": "redacted
        "timezone": "redacted
        "region": redacted
        "longitude":redacted,
        "edgeRequestKeepAliveStatus": 1,
        "tlsClientRandom": redacted,
        "latitude": redacted",
        "postalCode": "redacted,
        "city": "Solna",
        "regionCode": redacted,
        "asOrganization": redacted,
        "tlsClientHelloLength": "1761",
        "pagesHostName": redacted,
        "botManagement": {
          "corporateProxy": false,
          "verifiedBot": false,
          "jsDetection": {
            "passed": false
          },
          "staticResource": false,
          "detectionIds": {},
          "score": 99
        }
      }
    },
    "response": {
      "status": 500
    }
  },
  "id": 0
}

[tarekfb]

maybe @Lms24 knows anything about this? I read your new docs saying platform.env has to be used, however as stated above, I'm not using env vars whatsoever in the sentry config

[lforst]

Hi, did you add the compat flag to your wrangler config? https://github.com/getsentry/sentry-docs/blob/0dd74191b9e3c032a8506657908274a3eea46bef/docs/platforms/javascript/guides/cloudflare/frameworks/sveltekit.mdx#2-cloudflare-configuration

[tarekfb]

Hi, did you add the compat flag to your wrangler config? https://github.com/getsentry/sentry-docs/blob/0dd74191b9e3c032a8506657908274a3eea46bef/docs/platforms/javascript/guides/cloudflare/frameworks/sveltekit.mdx#2-cloudflare-configuration

Yes, I've set it in the cloudflare dashboard. I've just downloaded (generated) a local wrangler.toml file and it had compatibility_flags = [ "nodejs_compat" ]. I'll push that too, although it shouldnt make a difference

Edit: no difference

[Lms24]

Hi, thanks for writing in! This sounds a bit strange to me as I wasn't aware that process isn't available in CF 🤔

We do access process.env when flushing out events on the server side:

sentry-javascript/packages/sveltekit/src/server-common/utils.ts

Lines 21 to 22 in fda7103

	export async function flushIfServerless(): Promise<void> {
	const platformSupportsStreaming = !process.env.LAMBDA_TASK_ROOT && !process.env.VERCEL;

Without a stack trace it's hard to tell but maybe this is where things go wrong... I can add a guard for process but not sure if this actually fixes things or we fail further down in the chain.