Storybook: Angular 10 Storybook project does not load in IE11

[lagatchell]

Describe the bug
A new Angular 10 Storybook project does not load in IE11.

To Reproduce
Steps to reproduce the behavior:

1. Create a new Angular 10 CLI project (using ng new storybook-project)
2. Initialize it as a storybook project (npx sb init)
3. Run npm run storybook
4. Open Storybook in IE 11
5. Open dev tools
6. Observe Storybook gets stuck in loading state
7. Observe console error Syntax error
8. Or clone pre-configured repo: https://github.com/lagatchell/ie-angular-storybook-issue

Expected behavior
A new Angular 10 Storybook project should load in IE11.

Screenshots
Browser:

Console:

System:
System: OS: Windows 10 10.0.17134 CPU: (8) x64 Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz Binaries: Node: 10.15.3 - C:\Program Files\nodejs\node.EXE npm: 6.9.0 - C:\Program Files\nodejs\npm.CMD Browsers: Chrome: 84.0.4147.89 Edge: Spartan (42.17134.1098.0) npmPackages: @storybook/addon-actions: ^6.0.21 => 6.0.21 @storybook/addon-essentials: ^6.0.21 => 6.0.21 @storybook/addon-links: ^6.0.21 => 6.0.21 @storybook/angular: ^6.0.21 => 6.0.21

[lagatchell]

Could be related to https://github.com/storybookjs/storybook/issues/11433

[antoniosZ]

could also be related to #12179

[stale[bot]]

Hi everyone! Seems like there hasn't been much going on in this issue lately. If there are still questions, comments, or bugs, please feel free to continue the discussion. Unfortunately, we don't have time to get to every issue. We are always open to contributions so please send us a pull request if you would like to help. Inactive issues will be closed after 30 days. Thanks!

[lacolaco]

Also maybe related to https://github.com/storybookjs/storybook/issues/8884

[anwalkers]

IE11 is headed out the door...

https://techcommunity.microsoft.com/t5/microsoft-365-blog/microsoft-365-apps-say-farewell-to-internet-explorer-11-and/ba-p/1591666