diff --git a/index.d.ts b/index.d.ts
index f11c6e9..30fdd6f 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,80 +1,37 @@
-/** Declaration file generated by dts-gen */
+declare function logdown(prefix: string, opts?: logdown.LogdownOptions): logdown.Logger;
 
-export = logdown;
+declare namespace logdown {
+  type LoggerState = { isEnabled: boolean };
+  type TransportFunction = (options: TransportOptions) => void;
 
-declare class logdown {
-    constructor(prefix: any, opts: any);
+  interface LogdownOptions {
+    logger?: any;
+    markdown?: boolean;
+    prefix?: string;
+    prefixColor?: string;
+  }
 
-    debug(...args: any[]): void;
+  interface TransportOptions {
+    args: any[];
+    instance: string;
+    level: string;
+    msg: string;
+    state: LoggerState;
+  }
 
-    error(...args: any[]): void;
+  const transports: TransportFunction[];
 
-    info(...args: any[]): void;
+  class Logger {
+    constructor(prefix: string, opts?: LogdownOptions);
 
+    debug(...args: any[]): void;
+    error(...args: any[]): void;
+    info(...args: any[]): void;
     log(...args: any[]): void;
-
     warn(...args: any[]): void;
 
-    static disable(...args: any[]): void;
-
-    static enable(...args: any[]): void;
-
+    state: LoggerState;
+  }
 }
 
-declare namespace logdown {
-    namespace disable {
-        const prototype: {
-        };
-
-    }
-
-    namespace enable {
-        const prototype: {
-        };
-
-    }
-
-    namespace prototype {
-        function debug(...args: any[]): void;
-
-        function error(...args: any[]): void;
-
-        function info(...args: any[]): void;
-
-        function log(...args: any[]): void;
-
-        function warn(...args: any[]): void;
-
-        namespace debug {
-            const prototype: {
-            };
-
-        }
-
-        namespace error {
-            const prototype: {
-            };
-
-        }
-
-        namespace info {
-            const prototype: {
-            };
-
-        }
-
-        namespace log {
-            const prototype: {
-            };
-
-        }
-
-        namespace warn {
-            const prototype: {
-            };
-
-        }
-
-    }
-
-}
+export = logdown;