[🐛 Bug]: iifefy breaks export default string contents

[nickbabcock]

next-on-pages environment related information

System:
        Platform: linux
        Arch: x64
        Version: #40~22.04.3-Ubuntu SMP PREEMPT_DYNAMIC Tue Jul 30 17:30:19 UTC 2
        CPU: (12) x64 AMD Ryzen 9 5900X 12-Core Processor
        Memory: 20 GB
        Shell: /bin/bash
Package Manager Used: npm (10.8.1)

Relevant Packages:
        @cloudflare/next-on-pages: 1.13.2
        vercel: N/A
        next: N/A

Description

all instances of "export default " get replaced by "return " even if the "export default " occurs within a string (ie: not javascript that gets executed):

next-on-pages/packages/next-on-pages/src/buildApplication/processVercelFunctions/dedupeEdgeFunctions.ts

Line 312 in 12080f6

.replace(/export\s+default\s+/g, 'return ')}

Seems like

Reproduction

Pretty easy to replicate:

import { NextResponse } from "next/server";
export const runtime = "edge"

export const GET = () => NextResponse.json("LOREM export default IPSUM");

What gets uploaded to cloudflare ends up being "LOREM return IPSUM"

Pages Deployment Method

None

Pages Deployment ID

No response

Additional Information

The best workaround I've found is to do string concatenation with values wrapped in promises.

It's tedious but some layer in the pipeline can do constant folding which thwarted more straightforward solutions.

Would you like to help?

• Would you like to help fixing this bug?