From edb722df37592044d8d7b9f0fd377156539e73aa Mon Sep 17 00:00:00 2001
From: Tim <hello@timsmart.co>
Date: Tue, 16 Jan 2024 11:24:09 +1300
Subject: [PATCH] allow undefined in rpc schemas (#1924)

---
 .changeset/selfish-pets-breathe.md  | 5 +++++
 packages/rpc/src/internal/schema.ts | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/selfish-pets-breathe.md

diff --git a/.changeset/selfish-pets-breathe.md b/.changeset/selfish-pets-breathe.md
new file mode 100644
index 00000000000..c286e7be0e3
--- /dev/null
+++ b/.changeset/selfish-pets-breathe.md
@@ -0,0 +1,5 @@
+---
+"@effect/rpc": patch
+---
+
+allow undefined in rpc schemas
diff --git a/packages/rpc/src/internal/schema.ts b/packages/rpc/src/internal/schema.ts
index 89a0c18005c..4ed6ecf30c9 100644
--- a/packages/rpc/src/internal/schema.ts
+++ b/packages/rpc/src/internal/schema.ts
@@ -10,7 +10,7 @@ import * as Codec from "./codec.js"
 
 type JsonArray = ReadonlyArray<Json>
 type JsonObject = { readonly [key: string]: Json }
-export type Json = null | boolean | number | string | JsonArray | JsonObject
+export type Json = undefined | null | boolean | number | string | JsonArray | JsonObject
 
 /** @internal */
 export const RpcServiceId: schema.RpcServiceId = Symbol.for(