Nullish operator transpilation

[mr47]

What version of Next.js are you using?

12

What version of Node.js are you using?

16

What browser are you using?

chrome

What operating system are you using?

macOS

How are you deploying your application?

vercel/netlify

Describe the Bug

Nullish operator breaks pages, for example

const test = my_array?.[0] ?? [];

will produce

(my_array === null || my_array === void 0 ? void 0 : my_array[0]) ?? [];

Expected Behavior

It should replace with || or what webpack / swc think is better

To Reproduce

Some api with

const test = my_array?.[0] ?? '';

next.config.js

experimental: {
    concurrentFeatures: false,
    serverComponents: false,
    swcMinify: false
}

next build

[chentsulin]

The variable is missing in this statement:

const = my_array?.[0] ?? '';

Did it produce any meaningful output?

[balazsorban44]

This issue has been automatically locked due to no recent activity. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.