diff --git a/console/src/main/kotlin/com/caoccao/javet/shell/BaseJavetShell.kt b/console/src/main/kotlin/com/caoccao/javet/shell/BaseJavetShell.kt
index 4e233d9..8fc741c 100644
--- a/console/src/main/kotlin/com/caoccao/javet/shell/BaseJavetShell.kt
+++ b/console/src/main/kotlin/com/caoccao/javet/shell/BaseJavetShell.kt
@@ -34,13 +34,17 @@ import java.util.*
 abstract class BaseJavetShell(
     protected val options: Options,
 ) {
+    companion object {
+        const val PROMPT_STRING = "Please input the script or press Ctrl+C to exit."
+    }
+
     protected abstract val prompt: String
 
     protected abstract fun createEventLoop(v8Runtime: V8Runtime, options: Options): BaseEventLoop
 
     fun execute(): ExitCode {
         println("${Constants.Application.NAME} v${Constants.Application.VERSION} (${options.jsRuntimeType.name} ${options.jsRuntimeType.version})")
-        println("Please input the script or press Ctrl+C to exit.")
+        println(PROMPT_STRING)
         println()
         V8Host.getInstance(options.jsRuntimeType).createV8Runtime<V8Runtime>().use { v8Runtime ->
             v8Runtime.logger = JavetShellLogger()
diff --git a/console/src/main/kotlin/com/caoccao/javet/shell/JavetShellNode.kt b/console/src/main/kotlin/com/caoccao/javet/shell/JavetShellNode.kt
index 8cc6f9b..6f915ba 100644
--- a/console/src/main/kotlin/com/caoccao/javet/shell/JavetShellNode.kt
+++ b/console/src/main/kotlin/com/caoccao/javet/shell/JavetShellNode.kt
@@ -23,6 +23,15 @@ import com.caoccao.javet.shell.entities.Options
 class JavetShellNode(
     options: Options,
 ) : BaseJavetShell(options) {
+    companion object {
+        const val PROMISE_REJECT_CALLBACK_CODE_STRING = """const process = require('process');
+                process.on('unhandledRejection', (reason, promise) => {
+                    console.error();
+                    console.error(reason.toString());
+                    console.error();
+                });"""
+    }
+
     init {
         assert(options.jsRuntimeType.isNode) { "JS runtime type must be Node." }
     }
@@ -36,13 +45,6 @@ class JavetShellNode(
 
     override fun registerPromiseRejectCallback(v8Runtime: V8Runtime) {
         v8Runtime.v8ModuleResolver = JavetBuiltInModuleResolver()
-        v8Runtime.getExecutor(
-            """const process = require('process');
-                                    process.on('unhandledRejection', (reason, promise) => {
-                                        console.error();
-                                        console.error(reason.toString());
-                                        console.error();
-                                    });"""
-        )?.executeVoid()
+        v8Runtime.getExecutor(PROMISE_REJECT_CALLBACK_CODE_STRING).executeVoid()
     }
 }
\ No newline at end of file