handle 0 values

Author: mydea

dev-packages/node-overhead-gh-action/lib/Formatter.mjs

@@ -1,9 +1,15 @@
-import * as core from '@actions/core';
-
 const NODE_OVERHEAD_RESULTS_HEADER = ['Scenario', 'Prev Requests/s', 'New Requests/s', 'Change %'];
 
 export class Formatter {
   formatPercentageChange(base = 0, current = 0) {
+    if (base === 0) {
+      return 'added';
+    }
+
+    if (current === 0) {
+      return 'removed';
+    }
+
     const value = ((current - base) / base) * 100;
     const formatted = (Math.sign(value) * Math.ceil(Math.abs(value) * 100)) / 100;