xrsh-buildroot/buildroot-v86/board/v86/rootfs_overlay/etc/profile.js

#!/bin/js

// do once (remember /etc/profile gets sources multiple times!)
if( !window['/etc/profile.js'] ){ 

  const isoterminal = document.querySelector('[isoterminal]').components.isoterminal.isoterminal
  const scene       = document.querySelector('a-scene')


  // map AFRAME events to ~/hook.d/{event}/* triggers
  events            = ['enter-ar','enter-vr','exit-vr','exit-ar']
  events.map( (event) => {
    scene.addEventListener( event, (e) => isoterminal.exec("hook "+event) )
  })

  window['/etc/profile.js'] = true 
}