Illegal return statement error on console in WebVR examples

[takahirox]

Description of the problem

On WebVR examples, for example https://threejs.org/examples/#webvr_ballshooter, I see the following error on console.

Uncaught SyntaxError: Illegal return statement HelioWebXRPolyfill.js:7 

Maybe related: #17815

Three.js version

• Dev
• r110
• ...

Browser

• All of them
• Chrome
• Firefox
• Internet Explorer

OS

• All of them
• Windows
• macOS
• Linux
• Android
• iOS

Hardware Requirements (graphics card, VR Device, ...)