[Next 9.5.4] Symbol.prototype.description polyfill raises TypeError

Bug report

Describe the bug

The Symbol.prototype.description polyfill raises TypeError in Safari 11 or any other browser that does not support Symbol.prototype.description natively.

To Reproduce

1. Open a web page that runs on Next.js 9.5.4 or 9.5.5 (https://nextjs.org is handy, or you can set up a starter app locally: npx create-next-app nextjs-blog --use-npm --example "https://github.com/vercel/next-learn-starter/tree/a24ee6c823/learn-starter" && cd nextjs-blog && npm install next@9.5.4 && npm run dev)
2. Open developer tools
3. Enter Symbol.iterator.description in the console
4. TypeError: Cannot convert a symbol to a string is raised

Expected behavior

Symbol.iterator.description === 'Symbol.iterator'

Screenshots

System information

• OS: iOS 11.4
• Browser: Mobile Safari 11
• Version of Next.js: 9.5.4-9.5.5
• Version of Node.js: 12.10.0

Additional context

https://github.com/vercel/next.js/blob/1c4aecbeaf9de44cec3484f76d23ec8103f3bc50/packages/next-polyfill-module/src/index.js#L32-L38

/\((.+)\)/.exec(this)[1] will not work on any browser as RegExp.prototype.exec is spec’d to convert the argument to a string with the abstract operation ToString and ToString(symbol) throws a TypeError exception. See https://tc39.es/ecma262/#sec-regexp.prototype.exec and https://tc39.es/ecma262/#sec-tostring .

[prettyboyweiwei]

+1 “next”: “^9.5” => “next”: “9.5.3”

[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.