src/vs/code/electron-sandbox/issue/issueReporterMain.ts/IssueReporter/validateInput
class IssueReporter:	private validateInput(inputId: string): boolean {
		const inputElement = (<HTMLInputElement>this.getElementById(inputId));
		const inputValidationMessage = this.getElementById(`${inputId}-empty-error`);
		if (!inputElement.value) {
			inputElement.classList.add('invalid-input');
			inputValidationMessage?.classList.remove('hidden');
			return false;
		} else {
			inputElement.classList.remove('invalid-input');
			inputValidationMessage?.classList.add('hidden');
			return true;
		}
	}