fix: typings definition

Author: pedronauck

src/index.tsx

@@ -27,7 +27,7 @@ const isValidRenderProp = (prop: ReactNode | ChildrenFn<any>): boolean =>
 
 export declare type RPC<RP, P = {}> = React.SFC<
   P & {
-    children: ChildrenFn<RP>
+    children?: ChildrenFn<RP>
     render?: ChildrenFn<RP>
   }
 >
@@ -43,7 +43,7 @@ export declare type MapperValue<RP, P> =
   | ReactElement<any>
   | MapperComponent<RP, P>
 
-export declare type Mapper<RP, P> = Record<keyof RP, MapperValue<RP, P>>
+export declare type Mapper<RP, P> = Record<string, MapperValue<RP, P>>
 
 export declare type MapProps<RP> = (props: any) => RP
 
@@ -58,11 +58,13 @@ export function adopt<RP = any, P = any>(
   }
 
   const mapperKeys = keys(mapper)
-  const Children: any = ({ children, ...rest }: any) =>
-    isFn(children) && children(rest)
+  const Children: any = ({ render, children, ...rest }: any) =>
+    render && isFn(render)
+      ? render(rest)
+      : children && isFn(children) && children(rest)
 
   const reducer = (Component: RPC<RP>, key: string, idx: number): RPC<RP> => ({
-    render,
+    render: pRender,
     children,
     ...rest
   }) => (
@@ -71,6 +73,7 @@ export function adopt<RP = any, P = any>(
         const element = prop(key, mapper)
         const propsWithoutRest = omit<RP>(keys(rest), props)
         const isLast = idx === mapperKeys.length - 1
+        const render = pRender && isFn(pRender) ? pRender : children
 
         const renderFn: ChildrenFn<RP> = cProps => {
           const renderProps = assign({}, propsWithoutRest, {
@@ -82,11 +85,7 @@ export function adopt<RP = any, P = any>(
               ? mapProps(renderProps)
               : renderProps
 
-          return render && isFn(render)
-            ? render(propsToPass)
-            : isFn(children)
-              ? children(propsToPass)
-              : null
+          return render && isFn(render) ? render(propsToPass) : null
         }
 
         return isFn(element)
@@ -104,7 +103,8 @@ export function adopt<RP = any, P = any>(
 
 export type AdoptProps<RP, P> = P & {
   mapper: Mapper<RP, P>
-  children: ChildrenFn<RP>
+  children?: ChildrenFn<RP>
+  render?: ChildrenFn<RP>
   mapProps?: MapProps<RP>
 }