updated the test

src/lib/doormileFormat.js

@@ -18,18 +18,21 @@ const DECIMAL = new Intl.NumberFormat('en-IN');
 
 /** Money, or a dash. `0` is a real amount and renders as ₹0.00. */
 export const currency = (value, fallback = '—') => {
+  if (value === null || value === undefined || value === '') return fallback;
   const n = Number(value);
   return Number.isFinite(n) ? INR.format(n) : fallback;
 };
 
 /** A count with thousands separators, or a dash. */
 export const number = (value, fallback = '—') => {
+  if (value === null || value === undefined || value === '') return fallback;
   const n = Number(value);
   return Number.isFinite(n) ? DECIMAL.format(n) : fallback;
 };
 
 /** A distance in km to one decimal, or a dash. */
 export const km = (value, fallback = '—') => {
+  if (value === null || value === undefined || value === '') return fallback;
   const n = Number(value);
   return Number.isFinite(n) ? `${n.toFixed(1)} km` : fallback;
 };