src/vs/code/electron-sandbox/issue/issueReporterMain.ts/startup
export function startup(configuration: IssueReporterWindowConfiguration) {
	const platformClass = isWindows ? 'windows' : isLinux ? 'linux' : 'mac';
	document.body.classList.add(platformClass); // used by our fonts

	safeInnerHtml(document.body, BaseHtml());

	const issueReporter = new IssueReporter(configuration);
	issueReporter.render();
	document.body.style.display = 'block';
	issueReporter.setInitialFocus();
}