permissions-policy-battery.html (288B)
1 <script> 2 'use strict'; 3 4 Promise.resolve().then(() => navigator.getBattery()).then(battery => { 5 window.parent.postMessage({ type: 'availability-result', enabled: true }, '*'); 6 }, error => { 7 window.parent.postMessage({ type: 'availability-result', enabled: false }, '*'); 8 }); 9 </script>