Print silently (no print dialog/window opening) in electron.js with a physical printer - no external libraries needed

electron.js

// Adjusted from https://stackoverflow.com/a/46020931/3763660
// This does not work on its own, but needs to be placed in the electron.js file

printSilently('Hello physical world');

function printSilently(text){
	let printWin = new BrowserWindow({width: 800, height: 600, show: false });
	let file = 'data:text/html;charset=UTF-8, <p>' + text + '</p>'
	printWin.loadURL(file)
	printWin.webContents.on('did-finish-load', () => {
		printWin.webContents.print({silent: true});
		printWin = null;
	});
}