The add() method of Set returns wrong values in webpage IDE console panel

[akasuv]

🐛 bug report

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Description of the problem

I was reading JavaScript: The Definitive Guide, and trying some Set methods with CodeSandbox, and found the add() method returns different values in IDE console panel and Chrome build-in console.

The add() method takes a single argument; if you pass an array, it adds the array itself to the set, not the individual array elements. add() always returns the set it is invoked on

IDE console

Chrome built-in console

How has this issue affected you? What are you trying to accomplish?

I think it's a language implementation level problem.

To Reproduce

Check the link below

Link to sandbox: link

Your Environment

Software	Name/Version
Сodesandbox	Webpage
Browser	Version 90.0.4422.0 (Official Build) canary (x86_64)
Operating System	macOS Big Sur Version 11.2.1

[github-actions]

This issue has automatically been marked stale because there has been no activity in a while. Please leave a comment if the issue has not been resolved, or if it is not stale for any other reason. After 2 weeks, this issue will automatically be closed, unless a comment is made or the stale label is removed.

[lbogdan]

Hey @akasuv ,

Thanks for your report!

The linked sandbox no longer exists, but I replicated this in https://codesandbox.io/s/console-feed-set-issue-z7p2k and will open an issue against the upstream dependency, console-feed.

[github-actions]

This issue has automatically been marked stale because there has been no activity in a while. Please leave a comment if the issue has not been resolved, or if it is not stale for any other reason. After 2 weeks, this issue will automatically be closed, unless a comment is made or the stale label is removed.