in server/src/server.ts [127:138]
function convertSeverity(mistakeType: string): DiagnosticSeverity {
	switch (mistakeType) {
		case "Warning":
			return DiagnosticSeverity.Warning;
		case "Informational":
			return DiagnosticSeverity.Information;
		case "Hint":
			return DiagnosticSeverity.Hint;
	}
	return DiagnosticSeverity.Error;
}