feat: add type to builder wrapper (#48)

Author: eduardoboucas

src/lib/builder.ts

@@ -0,0 +1,7 @@
+import { Handler } from '../function/handler'
+
+export interface Builder {
+  (handler: Handler): Handler
+}
+
+export declare const builder: Builder

src/main.d.ts

@@ -1 +1,2 @@
+export * from './lib/builder'
 export * from './function'