perf(server): use empty body for undefined RPC input/output (#128)

* perf(server): use empty body for undefined RPC input/output

* fix tests

Author: dinwwwh

packages/client/src/adapters/fetch/orpc-link.ts

@@ -145,6 +145,15 @@ export class RPCLink<TClientContext> implements ClientLink<TClientContext> {
 
     const method = expectMethod === 'GET' ? this.fallbackMethod : expectMethod
 
+    if (input === undefined) {
+      return {
+        body: undefined,
+        method,
+        headers,
+        url,
+      }
+    }
+
     if (isPlainObject(serialized)) {
       if (!headers.has('content-type')) {
         headers.set('content-type', 'application/json')

packages/server/src/adapters/standard/rpc-serializer.test.ts

@@ -11,6 +11,10 @@ describe.each(supportedDataTypes)('rpcSerializer: $name', ({ value, expected })
       return serializer.deserialize(serialized)
     }
 
+    if (serialized === undefined) {
+      return serializer.deserialize(undefined)
+    }
+
     return serializer.deserialize(JSON.parse(JSON.stringify(serialized))) // like in the real world
   }
 

packages/server/src/adapters/standard/rpc-serializer.ts

@@ -2,11 +2,15 @@ import type { Segment } from '@orpc/shared'
 import { findDeepMatches, isPlainObject, set } from '@orpc/shared'
 
 export type RPCSerializedJsonMeta = ['bigint' | 'date' | 'nan' | 'undefined' | 'set' | 'map' | 'regexp' | 'url', Segment[]][]
-export type RPCSerialized = { json: unknown, meta: RPCSerializedJsonMeta } | FormData | Blob
+export type RPCSerialized = { json: unknown, meta: RPCSerializedJsonMeta } | FormData | Blob | undefined
 export type RPCSerializedFormDataMaps = Segment[][]
 
 export class RPCSerializer {
   serialize(data: unknown): RPCSerialized {
+    if (data === undefined) {
+      return undefined
+    }
+
     if (data instanceof Blob) {
       return data
     }
@@ -31,6 +35,10 @@ export class RPCSerializer {
   }
 
   deserialize(serialized: RPCSerialized): unknown {
+    if (serialized === undefined) {
+      return undefined
+    }
+
     if (serialized instanceof Blob) {
       return serialized
     }