multipart resolver type coercion

src/blockstate.js

@@ -26,16 +26,18 @@ function evaluateWhen(properties, condition) {
 
     for (const [key, val] of Object.entries(condition)) {
         if (key === 'OR' || key === 'AND') continue;
-        const prop = properties[key];
-        if (typeof val === 'string' && val.includes('|')) {
-            if (!val.split('|').includes(prop)) return false;
-        } else if (prop !== val.toString()) {
+
+        const prop = properties[key] !== undefined ? String(properties[key]) : undefined;
+        const strVal = String(val);
+
+        if (strVal.includes('|')) {
+            if (!strVal.split('|').includes(prop)) return false;
+        } else if (prop !== strVal) {
             return false;
         }
     }
     return true;
 }
-
 export class Blockstate {
     constructor(json) {
         this.variants = json.variants;