Prerequisites

• I have read the Contributing Guidelines.
• I agree to follow the Code of Conduct.
• I have searched for existing issues that already report this problem, without success.

Ionic Framework Version

v8.x

Current Behavior

After upgrading the ionic to 8 I am getting a runtime error on iOS 16.2 with Safari related to Regexp that uses Lookbehind assertion.

As the title explains itself the Lookbehind assertion is not supported on iOS 16.2 and older versions. My application is currently stuck on the initialisation.

The error:
SyntaxError: Invalid regular expression: invalid group specifier name
coming from @stencil/core/internal/client/index.js
var createSupportsRuleRe = selector => new RegExp(((?<!(^@supports(.*)))|(?<={.*))(${selector}\\b), "gim");

Project details:
Angular 18.2.13
Ionic: "@ionic/angular": "^8.4.3"

Expected Behavior

The application will be able to run on iOS < 16.3

Steps to Reproduce

Install the Angular 18.2.13 with Ionic 8.4.3 and run on iOS 16.2 with Safari.

Code Reproduction URL

https://dashboard.ionicframework.com/create-app/b2ff3c52

Ionic Info

Ionic:

Ionic CLI : 7.2.0 (/usr/local/lib/node_modules/@ionic/cli)
Ionic Framework : @ionic/angular 8.4.3
@angular-devkit/build-angular : 18.2.14
@angular-devkit/schematics : 18.2.14
@angular/cli : 18.2.14
@ionic/angular-toolkit : 12.1.1

Capacitor:

Capacitor CLI : 6.2.0
@capacitor/android : not installed
@capacitor/core : 6.2.0
@capacitor/ios : not installed

Cordova:

Cordova CLI : not installed
Cordova Platforms : not available
Cordova Plugins : not available

Utility:

cordova-res : not installed globally
native-run : 2.0.1

System:

NodeJS : v23.7.0 (/usr/local/Cellar/node/23.7.0/bin/node)
npm : 10.5.0
OS : macOS Unknown

Additional Information

No response