Cannot create a stackblitz repo with ivy

[ocombe]

🐞 Bug report

Command (mark with an x)

- [x] new

Is this a regression?

No

Description

I created a new ivy app with the cli rc2 using: ng new --enable-ivy, then uploaded the code to GitHub: https://github.com/ocombe/cli-ivy-test
I then imported this repository in Stackblitz using the following url: https://stackblitz.com/github/ocombe/cli-ivy-test

But the app that it created doesn't work, it uses cli v7 instead of v8 (like it was in my package.json) and it's trying to install core-js for some reason and it doesn't work.

🔬 Minimal Reproduction

See above ^

🔥 Exception or Error

Can't find package:core-js

[filipesilva]

It's odd that StackBlitz chose to use a different version. CLI v7 shouldn't be used with Angular 8 anyway, we have a same-version policy currently.

I tried forking the stackblitz project and update the versions (https://stackblitz.com/edit/github-2ybfdv?file=package.json) but still see the error. Adding "core-js": "3.0.1" to the dependencies doesn't remove the error either.

It might be that StackBlitz hasn't update their setup to match our setup. Or maybe there's something in our setup that's not compatible with StackBlitz.

I'm not well versed in their setup but something's going wrong here and this will probably affect existing docs samples.

[EricSimons]

Hey all- we're digging into this on our end right now. Will report back once we've gotten to the bottom of it! 🙏

[filipesilva]

Heya @EricSimons! If I had to bet it might be related to how we dynamically add polyfills from core-js as a dependency from @angular-devkit/build-angular. On a new 8 project core-js is located as these deps:

kamik@RED-X1C6 MINGW64 /d/sandbox/rc-project (master)
$ npm ls core-js
rc-project@0.0.0 D:\sandbox\rc-project
+-- @angular-devkit/build-angular@0.800.0-rc.2
| +-- core-js@3.0.1
| `-- istanbul-instrumenter-loader@3.0.1
|   `-- istanbul-lib-instrument@1.10.2
|     `-- babel-generator@6.26.1
|       `-- babel-runtime@6.26.0
|         `-- core-js@2.6.5
`-- karma@4.1.0
  `-- core-js@2.6.5

I'm not too sure how our setup translates to the StackBlitz setup, but let me know if we can help.