Tweak x.custom example

README.md

@@ -1817,21 +1817,14 @@ This returns a `ZodEffects` instance. `ZodEffects` is a wrapper class that conta
 You can create a Zod schema for any TypeScript type by using `z.custom()`. This is useful for creating schemas for types that are not supported by Zod out of the box, such as template string literals.
 
 ```ts
-const px = z.custom<`${number}px`>(
-  (x) =>
-    z
-      .string()
-      .regex(/^\d+px$/)
-      .safeParse(x).success
-);
-type Px = z.infer<typeof px>;
-// type Px = `${number}px`
-
-console.log(px.safeParse("42px").success); // true
-console.log(px.safeParse("42vw").success); // false
-console.log(px.safeParse(42).success); // false
-console.log(px.safeParse(42n).success); // false
-console.log(px.safeParse(null).success); // false
+const px = z.custom<`${number}px`>((val) => {
+  return /^\d+px$/.test(val as string);
+});
+
+type px = z.infer<typeof px>; // `${number}px`
+
+px.parse("42px"); // "42px"
+px.parse("42vw"); // throws;
 ```
 
 If you don't provide a validation function, Zod will allow any value. This can be dangerous!

deno/lib/README.md

@@ -1817,21 +1817,14 @@ This returns a `ZodEffects` instance. `ZodEffects` is a wrapper class that conta
 You can create a Zod schema for any TypeScript type by using `z.custom()`. This is useful for creating schemas for types that are not supported by Zod out of the box, such as template string literals.
 
 ```ts
-const px = z.custom<`${number}px`>(
-  (x) =>
-    z
-      .string()
-      .regex(/^\d+px$/)
-      .safeParse(x).success
-);
-type Px = z.infer<typeof px>;
-// type Px = `${number}px`
-
-console.log(px.safeParse("42px").success); // true
-console.log(px.safeParse("42vw").success); // false
-console.log(px.safeParse(42).success); // false
-console.log(px.safeParse(42n).success); // false
-console.log(px.safeParse(null).success); // false
+const px = z.custom<`${number}px`>((val) => {
+  return /^\d+px$/.test(val as string);
+});
+
+type px = z.infer<typeof px>; // `${number}px`
+
+px.parse("42px"); // "42px"
+px.parse("42vw"); // throws;
 ```
 
 If you don't provide a validation function, Zod will allow any value. This can be dangerous!

playground.ts

@@ -1,14 +1,6 @@
 import { z } from "./src";
 
-const a = z.object({ a: z.string() });
-const b = z.object({ a, b: z.string() });
-const c = z.object({ a, b, c: z.string() });
-const d = z.object({ a, b, c, d: z.string() });
-const e = z.object({ a, b, c, d, e: z.string() });
-const f = z.object({ a, b, c, d, e, f: z.string() });
-const g = z.object({ a, b, c, d, e, f, g: z.string() });
-const h = z.object({ a, b, c, d, e, f, g, h: z.string() });
-const i = z.object({ a, b, c, d, e, f, g, h, i: z.string() });
-const j = z.object({ a, b, c, d, e, f, g, h, i, j: z.string() });
-
+z.number().catch((ctx) => {
+  ctx;
+});
 export const arg = j.parse({});