Fix link

ERROR_HANDLING.md

@@ -26,7 +26,7 @@ Each ZodError has an `issues` property that is an array of `ZodIssues`. Each iss
 
 `ZodIssue` is _not_ a class. It is a [discriminated union](https://www.typescriptlang.org/docs/handbook/2/narrowing.html#discriminated-unions).
 
-The link above is the best way to learn about the concept. Discriminated unions are an ideal way to represent a data structures that may be one of many possible variants. You can see all the possible variants defined [here](./src/ZodError.ts). They are also described in the table below if you prefer.
+The link above is the best way to learn about the concept. Discriminated unions are an ideal way to represent a data structures that may be one of many possible variants. You can see all the possible variants defined [here](https://github.com/colinhacks/zod/blob/master/src/ZodError.ts). They are also described in the table below if you prefer.
 
 _Every_ ZodIssue has these fields:
 

deno/lib/types.ts

@@ -4838,7 +4838,7 @@ export interface ZodReadonlyDef<T extends ZodTypeAny = ZodTypeAny>
 export class ZodReadonly<T extends ZodTypeAny> extends ZodType<
   MakeReadonly<T["_output"]>,
   ZodReadonlyDef<T>,
-  T["_input"]
+  MakeReadonly<T["_input"]>
 > {
   _parse(input: ParseInput): ParseReturnType<this["_output"]> {
     const result = this._def.innerType._parse(input);

playground.ts

@@ -1,3 +1,9 @@
 import { z } from "./src";
 
 z;
+
+function dataObj<T extends z.ZodTypeAny>(schema: T) {
+  return z.object({ data: schema as T }).transform((a: T['_output']) => a.data);
+}
+
+const arg= dataObj(z.string()).parse({ data: "asdf" });