next.js: Next 12.2 ReferenceError: exports is not defined

Verify canary release

I verified that the issue exists in the latest Next.js canary release

Provide environment information

Next 12.2(-12.2.2)

Describe the Bug

I’m no longer able to import code with exports properly in Next 12.2

Expected Behavior

Next should properly bundle these files

Link to reproduction

https://github.com/hanford/12.2-exports

To Reproduce

Pull reproduction repo and try running on Next 12.2.0, you’ll see the following error:

You can check out the working branch, which just has Next 12.1.6, after installing the older version the code will run without error.

–

Happy to provide more information if it’s helpful!

About this issue

Original URL
State: closed
Created 2 years ago
Reactions: 9
Comments: 16 (9 by maintainers)

Commits related to this issue

feat(next-swc/auto-cjs): Detect `__esModule` (#38181) ## Bug - [ ] Related issues linked using `fixes #number` - [ ] Integration tests added - [ ] Errors have helpful link attached, see `contribut... — committed to vercel/next.js by kdy1 2 years ago
deps(tngvi): updated next to v12.2.3-canary.5 since it resolves https://github.com/vercel/next.js/issues/38117. — committed to engagementlab/el-next by johnnycrich 2 years ago

Most upvoted comments

We’re running into the same thing. It was working before on version 12.1.6.

PizzaPete on Jun 29, 2022

Can confirm that this was working before 12.2, we use next-transpile-modules to bring in mixed modules and they worked just fine up until 12.2

wiredmatt on Jul 3, 2022

add .babelrc without changing any configuration { "presets": ["next/babel"], "plugins": [] }

weiguanu on Jul 10, 2022

Nope, you can use patch-package if you want using this patch (patches/next+12.2.0.patch)

diff --git a/node_modules/next/dist/build/swc/options.js b/node_modules/next/dist/build/swc/options.js
index 4c650b2..d86fd41 100755
--- a/node_modules/next/dist/build/swc/options.js
+++ b/node_modules/next/dist/build/swc/options.js
@@ -44,7 +44,7 @@ function getBaseSWCOptions({ filename , jest , development , hasReactRefresh , g
                 baseUrl: resolvedBaseUrl,
                 paths
             } : {},
-            externalHelpers: !process.versions.pnp,
+            externalHelpers: false,
             parser: parserConfig,
             experimental: {
                 keepImportAssertions: true,

pveyes on Jul 5, 2022

Woot, excited for the next canary! 🖤

hanford on Jul 12, 2022