Add serialization modules and export kotlinx coroutines dep

worker-serialization-json/build.gradle.kts

@@ -0,0 +1,19 @@
+plugins {
+    kotlin("multiplatform")
+    kotlin("plugin.serialization")
+}
+
+kotlin {
+    explicitApi()
+
+    js(IR) {
+        nodejs { binaries.executable() }
+    }
+
+    sourceSets {
+        jsMain.dependencies {
+            api("org.jetbrains.kotlinx:kotlinx-serialization-core:1.8.1")
+            api("org.jetbrains.kotlinx:kotlinx-serialization-json:1.8.1")
+        }
+    }
+}

worker-serialization-json/src/jsMain/kotlin/cn/rtast/cfworker/serialization/json/json.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/1/17
+ */
+
+
+@file:OptIn(ExperimentalSerializationApi::class)
+
+package cn.rtast.cfworker.serialization.json
+
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.json.Json
+
+public val json: Json = Json {
+    ignoreUnknownKeys = true
+    explicitNulls = false
+    classDiscriminator = "_json_type_"
+    encodeDefaults = true
+    coerceInputValues = true
+    decodeEnumsCaseInsensitive = true
+    isLenient = true
+}
+
+public inline fun <reified T> T.toJson(): String {
+    return json.encodeToString(this)
+}
+
+public inline fun <reified T> String.fromJson(): T {
+    return json.decodeFromString<T>(this)
+}