test: make sure sanitize throws a readable error

Author: Miodec

frontend/__tests__/utils/misc.spec.ts

@@ -236,6 +236,7 @@ describe("misc.ts", () => {
         name: z.string(),
         age: z.number().positive(),
         tags: z.array(z.string()),
+        enumArray: z.array(z.enum(["one", "two"])).min(2),
       })
       .partial()
       .strip();
@@ -306,5 +307,15 @@ describe("misc.ts", () => {
       const stripped = sanitize(schema.strip(), obj);
       expect(stripped).not.toHaveProperty("powerLevel");
     });
+    it("should provide a readable error message", () => {
+      const obj = {
+        arrayOneTwo: ["one", "nonexistent"],
+      } as any;
+      expect(() => {
+        sanitize(schema.strip(), obj);
+      }).toThrowError(
+        "unable to sanitize: arrayOneTwo: Array must contain at least 2 element(s)"
+      );
+    });
   });
 });

frontend/src/ts/utils/misc.ts

@@ -770,9 +770,11 @@ export function sanitize<T extends z.ZodTypeAny>(
     // eslint-disable-next-line @typescript-eslint/no-unsafe-return
     return cleanValidate.data;
   }
-  throw new Error(
-    "unable to sanitize:  " + cleanValidate.error.errors.join(",")
-  );
+
+  const errorsString = cleanValidate.error.errors
+    .map((e) => e.path.join(".") + ": " + e.message)
+    .join(", ");
+  throw new Error("unable to sanitize: " + errorsString);
 }
 
 export function triggerResize(): void {