From 569bf35777d9c8365733c2d9bc915caf8645657b Mon Sep 17 00:00:00 2001
From: Colin McDonnell <colinmcd94@gmail.com>
Date: Tue, 30 Apr 2024 14:44:03 -0700
Subject: [PATCH] Update readme

---
 README.md          | 43 +------------------------------------------
 deno/lib/README.md | 43 +------------------------------------------
 2 files changed, 2 insertions(+), 84 deletions(-)

diff --git a/README.md b/README.md
index 2189ace27..bc6dda3e8 100644
--- a/README.md
+++ b/README.md
@@ -1959,48 +1959,7 @@ Thanks to [ggoodman](https://github.com/ggoodman) for suggesting this.
 
 Despite supporting recursive schemas, passing cyclical data into Zod will cause an infinite loop in some cases.
 
-You can protect against cyclical objects starting an infinite loop (at a performance cost) with the following approach
-(using the above `jsonSchema` as an example):
-
-```ts
-function isCircular(v: unknown, visited?: Set<unknown>): boolean {
-  if (v === null || typeof v !== 'object') {
-    return false;
-  }
-
-  if (visited?.has(v)) {
-    return true;
-  }
-
-  const actualVisited = visited ?? new Set<unknown>();
-  actualVisited.add(v);
-
-  if (Array.isArray(v)) {
-    return v.some(av => isCircular(av, actualVisited));
-  }
-
-  return Object.values(v).some(ov => isCircular(ov, actualVisited));
-}
-
-const NotCircular = z.unknown().superRefine((val, ctx) => {
-  if (isCircular(val)) {
-    ctx.addIssue({
-      code: z.ZodIssueCode.custom,
-      message: 'values cannot be circular data structures',
-      fatal: true
-    });
-
-    return z.NEVER;
-  }
-})
-
-const acircularJSONSchema = NotCircular.pipe(jsonSchema);
-
-acircularJSONSchema.parse(data);
-```
-
-When `NotCircular` fails, `pipe` will not pass the value into the next schema for evaluation, preventing the infinite
-loop.
+> To detect cyclical objects before they cause problems, consider [this approach](https://gist.github.com/colinhacks/d35825e505e635df27cc950776c5500b).
 
 ## Promises
 
diff --git a/deno/lib/README.md b/deno/lib/README.md
index 2189ace27..bc6dda3e8 100644
--- a/deno/lib/README.md
+++ b/deno/lib/README.md
@@ -1959,48 +1959,7 @@ Thanks to [ggoodman](https://github.com/ggoodman) for suggesting this.
 
 Despite supporting recursive schemas, passing cyclical data into Zod will cause an infinite loop in some cases.
 
-You can protect against cyclical objects starting an infinite loop (at a performance cost) with the following approach
-(using the above `jsonSchema` as an example):
-
-```ts
-function isCircular(v: unknown, visited?: Set<unknown>): boolean {
-  if (v === null || typeof v !== 'object') {
-    return false;
-  }
-
-  if (visited?.has(v)) {
-    return true;
-  }
-
-  const actualVisited = visited ?? new Set<unknown>();
-  actualVisited.add(v);
-
-  if (Array.isArray(v)) {
-    return v.some(av => isCircular(av, actualVisited));
-  }
-
-  return Object.values(v).some(ov => isCircular(ov, actualVisited));
-}
-
-const NotCircular = z.unknown().superRefine((val, ctx) => {
-  if (isCircular(val)) {
-    ctx.addIssue({
-      code: z.ZodIssueCode.custom,
-      message: 'values cannot be circular data structures',
-      fatal: true
-    });
-
-    return z.NEVER;
-  }
-})
-
-const acircularJSONSchema = NotCircular.pipe(jsonSchema);
-
-acircularJSONSchema.parse(data);
-```
-
-When `NotCircular` fails, `pipe` will not pass the value into the next schema for evaluation, preventing the infinite
-loop.
+> To detect cyclical objects before they cause problems, consider [this approach](https://gist.github.com/colinhacks/d35825e505e635df27cc950776c5500b).
 
 ## Promises