Next.js: `Set` is undefined on IE 10

[YUFENGWANG]

Bug report

Set is undefined on IE 10

Describe the bug

I'm just running the with-react-intl example , but on ie10 developer tools console, there is an error
Set is undefined

To Reproduce

1. npm install
2. npm run dev
3. open ie, go to localhost:3000
4. open browser devtools, see Set is undefined

Expected behavior

As described on the docs, nextjs supports ie10+, there should be Set bundled in the files

System information

• OS: macOS
• Browser: ie10
• Version of Next.js: latest

Additional context

btw, windows is in parallels desktop virtual machine on my mac

[fallion]

Does this happen without react-intl?

[YUFENGWANG]

@Fallion you can try every nextjs example in the examples folder in ie10, maybe they all have this issue

[timneutkens]

I'm pretty sure Next.js transpiles Set etc, just not for node_modules, so that must be the issue.

[timneutkens]

you can try every nextjs example in the examples folder in ie10

This sounds very unneeded, instead, you should provide a minimal reproduction.
Note that we have over 150 examples.

[YUFENGWANG]

@timneutkens For testing, I randomly choose an example in the examples folder named with-redux, clone it and run, then open ie, set the dev tools with ie10 mode, and I got the below errors
.
that says: Set is undefined, assign not exists in Object
to reproduce, just run the with-redux example and open your ie browser
that just not mean you have to try every official example, just randomly choose one and you will find the issue. for now, with-react-intl and with-redux have this issue that I've found.

[radeno]

React 16 does't support IE 10 anymore. https://reactjs.org/docs/javascript-environment-requirements.html
This is not NextJS issue. If you wanna support IE 10, load polyfills.
From core-js (like in example from link), which increases bundle or from polyfill.io.

[timneutkens]

@radeno great catch, I forgot about that one 🕵️