diff --git a/.bitmap b/.bitmap
index f03702d..2bba77a 100644
--- a/.bitmap
+++ b/.bitmap
@@ -12,30 +12,37 @@
     "models/cart-item": {
         "name": "models/cart-item",
         "scope": "bitdev.git-sync-demo",
-        "version": "0.0.1",
+        "version": "0692c168065fe6f7d8f9856aa9b0e216cc94aafc",
         "mainFile": "index.ts",
         "rootDir": "components/models/cart-item"
     },
     "ui/cart-summary": {
         "name": "ui/cart-summary",
         "scope": "bitdev.git-sync-demo",
-        "version": "0.0.1",
+        "version": "6421a3e9892fa8d619b7dfedce13414c4bb72422",
         "mainFile": "index.ts",
         "rootDir": "components/ui/cart-summary"
     },
     "ui/price-tag": {
         "name": "ui/price-tag",
         "scope": "bitdev.git-sync-demo",
-        "version": "0.0.1",
+        "version": "d9ef38c87fe01a1693f5b43bb35bb84363d32d05",
         "mainFile": "index.ts",
         "rootDir": "components/ui/price-tag"
     },
     "utils/format-price": {
         "name": "utils/format-price",
         "scope": "bitdev.git-sync-demo",
-        "version": "0.0.1",
+        "version": "12498fd2e619ea938672901ecb9e1bad9b811125",
         "mainFile": "index.ts",
         "rootDir": "components/utils/format-price"
     },
-    "$schema-version": "17.0.0"
+    "$schema-version": "17.0.0",
+    "_bit_lane": {
+        "id": {
+            "name": "hello",
+            "scope": "bitdev.git-sync-demo"
+        },
+        "exported": true
+    }
 }
\ No newline at end of file
diff --git a/components/utils/format-price/format-price.docs.mdx b/components/utils/format-price/format-price.docs.mdx
index 175260a..8654221 100644
--- a/components/utils/format-price/format-price.docs.mdx
+++ b/components/utils/format-price/format-price.docs.mdx
@@ -11,6 +11,7 @@ import { formatPrice } from '@bitdev/git-sync-demo.utils.format-price';
 
 formatPrice(1999.5); // "$1,999.50"
 formatPrice(12, 'EUR', 'de-DE'); // "12,00 €"
+formatPrice(Number.NaN); // throws a RangeError
 ```
 
 This is the component that the
diff --git a/components/utils/format-price/format-price.spec.ts b/components/utils/format-price/format-price.spec.ts
index 8e7d629..60b2c7e 100644
--- a/components/utils/format-price/format-price.spec.ts
+++ b/components/utils/format-price/format-price.spec.ts
@@ -11,3 +11,7 @@ it('formats another currency', () => {
 it('keeps two decimals for a whole number', () => {
   expect(formatPrice(3)).toEqual('$3.00');
 });
+
+it('rejects an amount that is not a finite number', () => {
+  expect(() => formatPrice(Number.NaN)).toThrow(RangeError);
+});
diff --git a/components/utils/format-price/format-price.ts b/components/utils/format-price/format-price.ts
index 387745e..36ad825 100644
--- a/components/utils/format-price/format-price.ts
+++ b/components/utils/format-price/format-price.ts
@@ -9,5 +9,8 @@
  * ui/cart-summary.
  */
 export function formatPrice(amount: number, currency = 'USD', locale = 'en-US'): string {
+  if (!Number.isFinite(amount)) {
+    throw new RangeError(`formatPrice: the amount must be a finite number, got ${amount}`);
+  }
   return new Intl.NumberFormat(locale, { style: 'currency', currency }).format(amount);
 }