cordova-plugin-insomnia/src/browser/Insomnia.js

Prevent the screen of the mobile device from falling asleep.

function notSupported() {
    console.log('Insomnia is not supported on the browser');
}

module.exports = {
    keepAwake: notSupported,
    allowSleepAgain: notSupported
};

require('cordova/exec/proxy').add('Insomnia', module.exports);