Loadable Components Does not seem to work on ios versions < 14.0

🐛 Bug Report

A clear and concise description of what the bug is. After testing my website (react app) with browserstack I found out that my app crashes on IOS versions < 14.0. The error I am getting is:

SyntaxError: Unexpected token '?'(anonymous function) @ pages-Configurator-Services.9808dfc7936d82d917d0.bundle.js:1
main.db24fa2….bundle.js:2 loadable-components: failed to asynchronously load component  

Steps to reproduce the behavior:

1. Open my website https://www.apkstationgoirle.nl
2. Navigate via the license plate input (enter 25SJJN) and click the blue next button.
3. Loadable error occurs in console

Expected behavior

I am expecting loadable components to be compatible with all versions of os systems? I will post my webpack config here as well.

Webpack config: (client/server/common) https://pastebin.com/auS4TMZB Reproduction link: https://www.apkstationgoirle.nl (check console.log)

Run npx envinfo --system --binaries --npmPackages @loadable/component,@loadable/server,@loadable/webpack-plugin,@loadable/babel-plugin --markdown --clipboard

Paste the results here:

## System:
 - OS: macOS 11.2.3
 - CPU: (8) x64 Intel(R) Core(TM) i7-6920HQ CPU @ 2.90GHz
 - Memory: 51.87 MB / 16.00 GB
 - Shell: 5.8 - /bin/zsh
## Binaries:
 - Node: 12.20.1 - /usr/local/opt/node@12/bin/node
 - Yarn: 1.22.10 - /usr/local/bin/yarn
 - npm: 6.14.7 - ~/.npm/bin/npm
## npmPackages:
 - @loadable/babel-plugin: ^5.13.2 => 5.13.2 
 - @loadable/component: ^5.14.1 => 5.14.1 
 - @loadable/server: ^5.14.0 => 5.14.2 
 - @loadable/webpack-plugin: ^5.14.0 => 5.14.2 

[theKashey]

What you can do in order to debug this issue:

• configure webpack to NOT codesplit (multiple ways, usually this condifuration is used for server-side bundles)
• run your application. In case of any error in your code, and I think there is something about under-transpiling some stuff, it will be easy to catch the problem.

But in any case - this is the browser not able to load your code. Nothing to fix from loadable, or even webpack level. Start looking at babel config.

[theKashey]

Sorry, this is not a loadable components bug - they just report the error that happened during the loading of your script.

The description given seem to be related to the nullish coalescing (.?) not transpiled to the lower target.

• Please check your bundler, babel or typescript settings.
• Please disable minification of the code to be able to see the exact place and code causing the error