fix: enumerable WellFormed

Author: akitaSummer

src/utils.ts

@@ -244,23 +244,31 @@ export function patchForNode16() {
   if (String.prototype.toWellFormed === undefined) {
     // eslint-disable-next-line @typescript-eslint/ban-ts-comment
     // @ts-ignore
-    String.prototype.toWellFormed = function() {
-      // eslint-disable-next-line @typescript-eslint/ban-ts-comment
-      // @ts-ignore
-      return toUSVString(this);
-    };
+    Object.defineProperty(String.prototype, 'toWellFormed', {
+      value: function() {
+        return toUSVString(this);
+      },
+      enumerable: false,
+      configurable: true,
+      writable: true,
+    })
   }
 
   // eslint-disable-next-line @typescript-eslint/ban-ts-comment
   // @ts-ignore
   if (String.prototype.isWellFormed === undefined) {
     // eslint-disable-next-line @typescript-eslint/ban-ts-comment
     // @ts-ignore
-    String.prototype.isWellFormed = function() {
-      // eslint-disable-next-line @typescript-eslint/ban-ts-comment
-      // @ts-ignore
-      return toUSVString(this) === this;
-    };
+    Object.defineProperty(String.prototype, 'isWellFormed', {
+      value: function() {
+        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+        // @ts-ignore
+        return toUSVString(this) === this;
+      },
+      enumerable: false,
+      configurable: true,
+      writable: true,
+    });
   }
 
 }