diff --git a/dist/index.d.ts b/dist/index.d.ts
index 3ed238b..1dc4bc6 100644
--- a/dist/index.d.ts
+++ b/dist/index.d.ts
@@ -27,6 +27,7 @@ export declare abstract class Client {
     loadLibs(module: string): Promise<void>;
     loadBound(module: string): Promise<ModuleBagBound>;
     protected handleError(ret: ErrTuple): void;
+    protected handleErrorOrReturn(ret: ErrTuple): any;
     protected callModuleReturn(method: string, data?: any): Promise<any>;
 }
 export declare function load(module?: string): Promise<ModuleBag | ModuleBagBound>;
diff --git a/dist/index.d.ts.map b/dist/index.d.ts.map
index d9434bd..f727d89 100644
--- a/dist/index.d.ts.map
+++ b/dist/index.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAAA,KAAK,UAAU,GAAG,cAAc,YAAY,EAAE,UAAU,CAAC;AACzD,KAAK,aAAa,GAAG,cAAc,YAAY,EAAE,aAAa,CAAC;AAC/D,KAAK,MAAM,GAAG,cAAc,YAAY,EAAE,MAAM,CAAC;AACjD,KAAK,GAAG,GAAG,cAAc,YAAY,EAAE,GAAG,CAAC;AAE3C,OAAO,KAAK,EAAE,QAAQ,EAAE,MAAM,EAAE,MAAM,gBAAgB,CAAC;AAEvD,KAAK,eAAe,GAAG,CAAC,MAAM,EAAE,MAAM,EAAE,IAAI,CAAC,EAAE,GAAG,KAAK,OAAO,CAAC,QAAQ,CAAC,CAAC;AACzE,KAAK,kBAAkB,GAAG,CACxB,MAAM,EAAE,MAAM,EACd,IAAI,EAAE,GAAG,EACT,aAAa,EAAE,MAAM,KAClB,CAAC,UAAU,EAAE,MAAM,EAAE,QAAQ,EAAE,OAAO,CAAC,QAAQ,CAAC,CAAC,CAAC;AAEvD,QAAA,IAAI,UAAU,EAAE,UAAU,CAAC;AAC3B,QAAA,IAAI,aAAa,EAAE,aAAa,CAAC;AACjC,QAAA,IAAI,GAAG,EAAE,GAAG,CAAC;AACb,QAAA,IAAI,MAAM,EAAE,MAAM,CAAC;AAEnB,MAAM,WAAW,SAAS;IACxB,UAAU,EAAE,UAAU,CAAC;IACvB,aAAa,EAAE,aAAa,CAAC;IAC7B,GAAG,EAAE,GAAG,CAAC;IACT,MAAM,EAAE,MAAM,CAAC;CAChB;AAED,MAAM,WAAW,cAAe,SAAQ,SAAS;IAC/C,UAAU,EAAE,eAAe,CAAC;IAC5B,aAAa,EAAE,kBAAkB,CAAC;CACnC;AAED,8BAAsB,MAAM;IAC1B,OAAO,CAAC,WAAW,CAAC,CAAkB;IAEtC,IAAI,UAAU,IAAI,eAAe,CAEhC;IAED,OAAO,CAAC,cAAc,CAAC,CAAqB;IAE5C,IAAI,aAAa,IAAI,kBAAkB,CAEtC;IAEY,QAAQ,CAAC,MAAM,EAAE,MAAM,GAAG,OAAO,CAAC,IAAI,CAAC;IAevC,SAAS,CAAC,MAAM,EAAE,MAAM,GAAG,OAAO,CAAC,cAAc,CAAC;IAI/D,SAAS,CAAC,WAAW,CAAC,GAAG,EAAE,QAAQ,GAAG,IAAI;cAK1B,gBAAgB,CAAC,MAAM,EAAE,MAAM,EAAE,IAAI,CAAC,EAAE,GAAG,GAAG,OAAO,CAAC,GAAG,CAAC;CAK3E;AAED,wBAAsB,IAAI,CACxB,MAAM,CAAC,EAAE,MAAM,GACd,OAAO,CAAC,SAAS,GAAG,cAAc,CAAC,CA+BrC;AAED,KAAK,iBAAiB,CAAC,CAAC,IAAI,KAAK,GAAG,IAAI,EAAE,GAAG,EAAE,KAAK,CAAC,CAAC;AAEtD,eAAO,MAAM,OAAO,kEAEV,MAAM,eAEY,GAAG,MAiB9B,CAAC"}
\ No newline at end of file
+{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAAA,KAAK,UAAU,GAAG,cAAc,YAAY,EAAE,UAAU,CAAC;AACzD,KAAK,aAAa,GAAG,cAAc,YAAY,EAAE,aAAa,CAAC;AAC/D,KAAK,MAAM,GAAG,cAAc,YAAY,EAAE,MAAM,CAAC;AACjD,KAAK,GAAG,GAAG,cAAc,YAAY,EAAE,GAAG,CAAC;AAE3C,OAAO,KAAK,EAAE,QAAQ,EAAE,MAAM,EAAE,MAAM,gBAAgB,CAAC;AAEvD,KAAK,eAAe,GAAG,CAAC,MAAM,EAAE,MAAM,EAAE,IAAI,CAAC,EAAE,GAAG,KAAK,OAAO,CAAC,QAAQ,CAAC,CAAC;AACzE,KAAK,kBAAkB,GAAG,CACxB,MAAM,EAAE,MAAM,EACd,IAAI,EAAE,GAAG,EACT,aAAa,EAAE,MAAM,KAClB,CAAC,UAAU,EAAE,MAAM,EAAE,QAAQ,EAAE,OAAO,CAAC,QAAQ,CAAC,CAAC,CAAC;AAEvD,QAAA,IAAI,UAAU,EAAE,UAAU,CAAC;AAC3B,QAAA,IAAI,aAAa,EAAE,aAAa,CAAC;AACjC,QAAA,IAAI,GAAG,EAAE,GAAG,CAAC;AACb,QAAA,IAAI,MAAM,EAAE,MAAM,CAAC;AAEnB,MAAM,WAAW,SAAS;IACxB,UAAU,EAAE,UAAU,CAAC;IACvB,aAAa,EAAE,aAAa,CAAC;IAC7B,GAAG,EAAE,GAAG,CAAC;IACT,MAAM,EAAE,MAAM,CAAC;CAChB;AAED,MAAM,WAAW,cAAe,SAAQ,SAAS;IAC/C,UAAU,EAAE,eAAe,CAAC;IAC5B,aAAa,EAAE,kBAAkB,CAAC;CACnC;AAED,8BAAsB,MAAM;IAC1B,OAAO,CAAC,WAAW,CAAC,CAAkB;IAEtC,IAAI,UAAU,IAAI,eAAe,CAEhC;IAED,OAAO,CAAC,cAAc,CAAC,CAAqB;IAE5C,IAAI,aAAa,IAAI,kBAAkB,CAEtC;IAEY,QAAQ,CAAC,MAAM,EAAE,MAAM,GAAG,OAAO,CAAC,IAAI,CAAC;IAavC,SAAS,CAAC,MAAM,EAAE,MAAM,GAAG,OAAO,CAAC,cAAc,CAAC;IAI/D,SAAS,CAAC,WAAW,CAAC,GAAG,EAAE,QAAQ,GAAG,IAAI;IAK1C,SAAS,CAAC,mBAAmB,CAAC,GAAG,EAAE,QAAQ,GAAG,GAAG;cAIjC,gBAAgB,CAAC,MAAM,EAAE,MAAM,EAAE,IAAI,CAAC,EAAE,GAAG,GAAG,OAAO,CAAC,GAAG,CAAC;CAK3E;AAED,wBAAsB,IAAI,CACxB,MAAM,CAAC,EAAE,MAAM,GACd,OAAO,CAAC,SAAS,GAAG,cAAc,CAAC,CA+BrC;AAED,KAAK,iBAAiB,CAAC,CAAC,IAAI,KAAK,GAAG,IAAI,EAAE,GAAG,EAAE,KAAK,CAAC,CAAC;AAEtD,eAAO,MAAM,OAAO,kEAEV,MAAM,eAEY,GAAG,MAiB9B,CAAC"}
\ No newline at end of file
diff --git a/dist/index.js b/dist/index.js
index 8de4611..d58c6f7 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -18,8 +18,7 @@ export class Client {
         const moduleBag = await this.loadBound(module);
         this._callModule = async (...args) => {
             const ret = await moduleBag.callModule(...args);
-            this.handleError(ret);
-            return ret;
+            return this.handleErrorOrReturn(ret);
         };
         this._connectModule = moduleBag.connectModule;
     }
@@ -31,6 +30,10 @@ export class Client {
             throw new Error(ret[1]);
         }
     }
+    handleErrorOrReturn(ret) {
+        this.handleError(ret);
+        return ret[0];
+    }
     async callModuleReturn(method, data) {
         const ret = await this.callModule(method, data);
         return ret[0];