Make safeParse().error a getter

colinhacks · Mar 5, 2023 · 67b981e · 67b981e
1 parent 9012dc7
commit 67b981e
Show file tree

Hide file tree

Showing 3 changed files with 31 additions and 5 deletions.
diff --git a/deno/lib/types.ts b/deno/lib/types.ts
@@ -91,8 +91,16 @@ const handleResult = <Input, Output>(
     if (!ctx.common.issues.length) {
       throw new Error("Validation failed but no issues detected.");
     }
-    const error = new ZodError(ctx.common.issues);
-    return { success: false, error };
+
+    return {
+      success: false,
+      get error() {
+        if ((this as any)._error) return (this as any)._error as Error;
+        const error = new ZodError(ctx.common.issues);
+        (this as any)._error = error;
+        return (this as any)._error;
+      },
+    };
   }
 };
 

diff --git a/playground.ts b/playground.ts
@@ -1,2 +1,12 @@
 import { z } from "./src";
-z;
+
+console.time("parse");
+// for (let i = 0; i < 1000000; i++) {
+//   z.string().safeParse(123);
+// }
+const result = z.string().safeParse(123);
+if (result.success === false) {
+  console.log(result.error);
+  console.log(result.error === result.error);
+}
+console.timeEnd("parse");
diff --git a/src/types.ts b/src/types.ts
@@ -91,8 +91,16 @@ const handleResult = <Input, Output>(
     if (!ctx.common.issues.length) {
       throw new Error("Validation failed but no issues detected.");
     }
-    const error = new ZodError(ctx.common.issues);
-    return { success: false, error };
+
+    return {
+      success: false,
+      get error() {
+        if ((this as any)._error) return (this as any)._error as Error;
+        const error = new ZodError(ctx.common.issues);
+        (this as any)._error = error;
+        return (this as any)._error;
+      },
+    };
   }
 };