Only log valid diagrams

.eslintrc.cjs

@@ -44,6 +44,7 @@ module.exports = {
 		],
 		'@typescript-eslint/no-unsafe-member-access': 'off',
 		'@typescript-eslint/no-unsafe-assignment': 'off',
-		'es/no-regexp-lookbehind-assertions': 'error'
+		'es/no-regexp-lookbehind-assertions': 'error',
+		curly: ['error', 'all']
 	}
 };

src/lib/util/stats.ts

@@ -54,6 +54,9 @@ export const countLines = (code: string): number => {
 
 export const saveStatistics = (graph: string): void => {
 	const graphType = detectType(graph);
+	if (!graphType) {
+		return;
+	}
 	const length = countLines(graph);
 	logEvent('render', { graphType, length });
 };