Array.prototype.at is not transpiled and causes TypeError in browsers

[paulgreg]

Verify canary release

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

Provide environment information

Operating System:
  Platform: linux
  Arch: x64
  Version: #61-Ubuntu SMP Fri Oct 14 13:05:50 UTC 2022
Binaries:
  Node: 18.12.1
  npm: 8.19.2
  Yarn: N/A
  pnpm: N/A
Relevant packages:
  next: 13.1.1
  eslint-config-next: 13.1.1
  react: 18.2.0
  react-dom: 18.2.0

Which area(s) of Next.js are affected? (leave empty if unsure)

SWC transpilation

Link to the code that reproduces this issue

https://codesandbox.io/s/awesome-dewdney-yp0x9d?file=/pages/index.tsx

To Reproduce

Create a new app via npx create-next-app@canary with default options

Add console.log([1,2,3].at(0)) in pages/index.tsx.

npm run build && npm run start

Describe the Bug

Open http://localhost:3000 in Chrome 91, Firefox 89 or Safari 13 (any browser not supporting array.at)

An error will occurs : TypeError: "[...].at is not a function"

The code isn’t transpiled to older browsers.

Expected Behavior

Code is transpiled and works on older browsers as described in next browser support documentation.

Which browser are you using? (if relevant)

Safari 13.1

How are you deploying your application? (if relevant)

No response

[bertho-zero]

Same error, I have to temporarily replace my Array.at

[klaasman]

This seems to be fixed ~2 weeks ago: #44436

[github-actions]

This closed issue has been automatically locked because it had no new activity for 2 weeks. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.