diff --git a/example/ts/src/index.ts b/example/ts/src/index.ts
index 4352d89..8603660 100644
--- a/example/ts/src/index.ts
+++ b/example/ts/src/index.ts
@@ -22,8 +22,9 @@ async function main() {
 
     console.log(`call result ts->go Div = ${await remoteApi.Div(10, 2)}`);
 
-    const data1 = new Uint8Array().fill(0b10101010, 0, 100);
-    const data2 = new Uint8Array().fill(0b11110000, 0, 100);
+    // todo check empty array
+    const data1 = new Uint8Array(100).fill(0b10101010, 0, 100);
+    const data2 = new Uint8Array(100).fill(0b11110000, 0, 100);
     console.log(`call result ts->go XorData = ${await remoteApi.XorData(data1, data2)}`);
 
     await ipc.wait();
diff --git a/lib/golang/lib.go b/lib/golang/lib.go
index 1a97cf9..e849632 100644
--- a/lib/golang/lib.go
+++ b/lib/golang/lib.go
@@ -6,6 +6,7 @@ import (
 	"errors"
 	"flag"
 	"fmt"
+	"log"
 	"net"
 	"os"
 	"os/exec"
@@ -66,7 +67,7 @@ func (ipc *ipcCommon) readConn() {
 	for scn.Scan() {
 		var msg Message
 		a := scn.Bytes()
-		_ = a
+		log.Println(string(a))
 		if err := json.Unmarshal(scn.Bytes(), &msg); err != nil {
 			ipc.raiseErr(fmt.Errorf("unmarshal message: %w", err))
 			break
diff --git a/lib/ts/src/lib.ts b/lib/ts/src/lib.ts
index 8d49ad1..e6d53b1 100644
--- a/lib/ts/src/lib.ts
+++ b/lib/ts/src/lib.ts
@@ -9,6 +9,8 @@ import {AsyncQueue} from './asyncqueue.js';
 
 const IPC_SOCKET_ARG = 'ipc-socket';
 
+type JSONSerializable = string | number | boolean;
+
 enum MsgType {
     Call = 1,
     Response = 2,
@@ -169,7 +171,7 @@ abstract class IPCCommon {
         callback({result: msg.result || [], error: err});
     }
 
-    call(method: string, ...params: Vals): Promise<Vals> {
+    call(method: string, ...args: Vals): Promise<Vals> {
         return new Promise((resolve, reject) => {
             const id = this.nextId++;
 
@@ -181,7 +183,7 @@ abstract class IPCCommon {
                 }
             };
             try {
-                this.sendMsg({type: MsgType.Call, id, method, args: params});
+                this.sendMsg({type: MsgType.Call, id, method, args: args.map(this.convType)});
             } catch (e) {
                 delete this.pendingCalls[id];
                 reject(new Error(`send call: ${ e }`));
@@ -189,6 +191,23 @@ abstract class IPCCommon {
         });
     }
 
+    private convType(arg: any): JSONSerializable {
+        // noinspection FallThroughInSwitchStatementJS
+        switch (typeof arg) {
+            case 'string':
+            case 'boolean':
+            case 'number':
+                return arg;
+            // @ts-expect-error TS7029
+            case 'object':
+                if(arg instanceof Uint8Array) {
+                    return Buffer.from(arg).toString('base64');
+                }
+            default:
+                throw new Error(`arg type ${typeof arg} is not supported`);
+        }
+    }
+
     stop() {
         if (this.stopRequested) {
             throw new Error('close already requested');