fix missing class .struct schema (#580)

.changeset/swift-cameras-join.md

@@ -0,0 +1,5 @@
+---
+"@effect/schema": patch
+---
+
+fix missing class .struct schema

src/Schema.ts

@@ -3789,6 +3789,8 @@ const makeClass = <I, A>(
       ).ast
     }
 
+    static struct = selfSchema
+
     static extend() {
       return (fields: any) => {
         const newFields = { ...selfFields, ...fields }

test/Schema/Class.test.ts

@@ -7,7 +7,7 @@ import * as Data from "effect/Data"
 import * as Equal from "effect/Equal"
 import * as O from "effect/Option"
 import * as Request from "effect/Request"
-import { describe, expect, it } from "vitest"
+import { assert, describe, expect, it } from "vitest"
 
 class Person extends S.Class<Person>()({
   id: S.number,
@@ -129,6 +129,11 @@ describe("Schema/Class", () => {
     )
   })
 
+  it(".struct", async () => {
+    const person = S.parseSync(Person.struct)({ id: 1, name: "John" })
+    assert.deepStrictEqual(person, { id: 1, name: "John" })
+  })
+
   it("extends", () => {
     const person = S.parseSync(PersonWithAge)({
       id: 1,