🐛 BUG: wrangler pages dev failing with error on Identifier '__cf_cjs' has already been declared

[anywhichway]

Which Cloudflare product(s) does this pertain to?

Pages

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

Wrangler 3.96.0

What version of Node are you using?

N/A

What operating system and version are you using?

Windows 11

Describe the Bug

Observed behavior

X [ERROR] service core:user:bitter-bread-d12c: Uncaught SyntaxError: Identifier '__cf_cjs' has already been declared

    at null.<anonymous> (fn7s4pcgxfq.js:1026)

Expected behavior

App starts

Steps to reproduce

Occurs when the code below is added as a function

Note: You will need to modify line 251 in json-bigint and comment out //case 'null': not valid because your linter also causes a fatal failure on this line

import { PromptRole } from "@llumiverse/core";
import { TogetherAIDriver } from "@llumiverse/drivers";
export async function onRequestPost(ctx) {
    const driver = new TogetherAIDriver({
        apiKey: "<some key>"
    });

    const prompt = [
        {
            role: PromptRole.user,
            content: 'Please, write a short story about winter in Paris, in no more than 512 characters.'
        }
    ]

    const body = await driver.execute(prompt, {
        model:"meta-llama/Meta-Llama-3.1-8B-Instruct-Turbo",
        temperature: 0.6,
        max_tokens: 1024
    });
    return new Response(200,{body:JSON.stringify(body)})
    //return new Response(200,{body:JSON.stringify(prompt)});
}

Please provide a link to a minimal reproduction

No response

Please provide any relevant error logs

wrangler-2024-12-17_15-58-15_864.log

[Webstablish]

Having the same issue unfortunately.

Uncaught SyntaxError: Identifier '__cf_cjs' has already been declared

In my case it happens when I add a SDK to the project to make API calls to a third party. Commenting out the functions that use the SDK fixes the issue, but breaks the app.

Updating to the latest wrangler version didn't help.

[emily-shen]

Hey thanks for the report! Can I check if you're all using nodejs_compat? And @Webstablish would be super helpful to know which SDK this is happening with.

[Webstablish]

@emily-shen, currently I have this in my wrangler.toml:
compatibility_flags = ["nodejs_compat_v2"]

The SDK I'm using is monday-sdk-js.

[anywhichway]

I dug in a little and found that __cf_cjs looks like it might be dynamically defined by CloudFalre, if so, fix might be to test for undefined first. Here is my compat flag: compatibility_flags = ["nodejs_compat"]

…

On Wed, Dec 18, 2024 at 7:08 AM emily-shen ***@***.***> wrote: Hey thanks for the report! Can I check if you're all using nodejs_compat? And @Webstablish <https://github.com/Webstablish> would be super helpful to know which SDK this is happening with. — Reply to this email directly, view it on GitHub <#7572 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABF2US2V242CZZ5NYO5A4WT2GGFWBAVCNFSM6AAAAABTYYNYS2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDKNJRGU3DQOJXGU> . You are receiving this because you authored the thread.Message ID: ***@***.***>