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Author: colinhacks

packages/zod/src/v4/core/to-json-schema.ts

@@ -709,7 +709,16 @@ export class JSONSchemaGenerator {
       flattenRef(entry[0], { target: this.target });
     }
 
-    const result = { ...root.def };
+    const result: JSONSchema.BaseSchema = {};
+    if (this.target === "draft-2020-12") {
+      result.$schema = "https://json-schema.org/draft/2020-12/schema";
+    } else if (this.target === "draft-7") {
+      result.$schema = "http://json-schema.org/draft-07/schema#";
+    } else {
+      console.warn(`Invalid target: ${this.target}`);
+    }
+
+    Object.assign(result, root.def);
 
     const defs: JSONSchema.BaseSchema["$defs"] = params.external?.defs ?? {};
     for (const entry of this.seen.entries()) {
@@ -728,14 +737,6 @@ export class JSONSchemaGenerator {
       }
     }
 
-    if (this.target === "draft-2020-12") {
-      result.$schema = "https://json-schema.org/draft/2020-12/schema";
-    } else if (this.target === "draft-7") {
-      result.$schema = "http://json-schema.org/draft-07/schema#";
-    } else {
-      console.warn(`Invalid target: ${this.target}`);
-    }
-
     try {
       // this "finalizes" this schema and ensures all cycles are removed
       // each call to .emit() is functionally independent

play.ts

@@ -1,43 +1,5 @@
-import { z } from "zod/v4-mini";
+import { z } from "zod/v4";
 
-// const zval = z
-//   .string()
-//   .check((ctx) => {
-//     console.log(`Checking value: ${ctx.value}`);
-//     if (ctx.value !== "expected") {
-//       ctx.issues.push({
-//         message: `Value must be 'expected', got '${ctx.value}'`,
-//         input: ctx.value,
-//         code: "custom",
-//         fatal: true,
-//         // continue: false,
-//         // fa
-//       });
-//     }
-//   })
-//   .transform((val) => {
-//     console.log(`Transforming value: ${val}`);
-//     return val.toUpperCase();
-//   })
-//   .prefault("unexpected");
-
-// const obj = z.object({
-//   test: zval,
-// });
-
-// console.log("NESTED");
-// console.log(obj.safeParse({ test: undefined }, { jitless: true })); // check runs, doesn't throw, transform not run
-
-// console.log("\n\nTOP LEVEL");
-// console.log(zval.safeParse(undefined, { jitless: true })); // check runs, throws
-
-const Shared = z.object({
-  label: z.string(),
-  description: z.string(),
+console.dir(z.toJSONSchema(z.string().startsWith("hello").includes("cruel").endsWith("world").regex(/stuff/)), {
+  depth: null,
 });
-
-const DU = z.discriminatedUnion("type", [
-  z.extend(Shared, { type: z.literal("a"), value: z.number() }),
-  z.extend(Shared, { type: z.literal("b"), value: z.string() }),
-  z.extend(Shared, { type: z.literal("c"), value: z.boolean() }),
-]);