Ne plante pas quand une réforme introduit une nouvelle variable budgétaire sans inflateur donc

src/lib/components/variables/InflationLawButton.svelte

@@ -20,12 +20,16 @@
         reformName,
         {
           ...reformParameter,
-          values: Object.fromEntries([
+          values:
+            reformParameter.values === undefined
+              ? undefined
+              : Object.fromEntries([
                   ...Object.entries(reformParameter.values),
                   [
                     "latest",
                     Object.entries(reformParameter.values).sort(
-                ([instant1], [instant2]) => instant2.localeCompare(instant1),
+                      ([instant1], [instant2]) =>
+                        instant2.localeCompare(instant1),
                     )[0][1],
                   ],
                 ]),
@@ -35,9 +39,12 @@
   )
 
   // Latest inflator
-  $: billInflator = inflatorWithLatestByReformName?.[$billName]
+  $: billInflator =
+    $billName === undefined
+      ? undefined
+      : inflatorWithLatestByReformName?.[$billName]
   $: billInflatorValueFormatted =
-    billInflator !== undefined
+    billInflator?.values !== undefined
       ? formatValue(billInflator.values["latest"].value, billInflator.unit)
       : undefined
 </script>