Add type tests

Author: houfio

.flowconfig

@@ -0,0 +1,12 @@
+[ignore]
+.*/node_modules/.*
+
+[include]
+
+[libs]
+
+[lints]
+
+[options]
+
+[strict]

README.md

@@ -3,16 +3,31 @@
 # use-async-effect
 :running: Asynchronous side effects, without the nonsense
 
-Installation:
+## Installation
 
-`npm install use-async-effect`
+```
+npm install use-async-effect
+```
+or
+```
+yarn add use-async-effect
+```
+
+This package includes TypeScript and Flow types.
 
-Example:
+## Examples
 
+Basic mount/unmount
 ```javascript
 useAsyncEffect(async () => console.log('mount'), () => console.log('unmount'), []);
 ```
 
-Roadmap:
+Omitting destroy
+```javascript
+useAsyncEffect(async () => console.log('mount'), []);
+```
 
-- [x] Typescript support.
+Handle effect result in destroy
+```javascript
+useAsyncEffect(() => fetch('url'), (result) => console.log(result));
+```

index.d.ts

@@ -1,12 +1,14 @@
 const { useEffect } = require('react');
 
 module.exports.useAsyncEffect = (effect, destroy, inputs) => {
+  const hasDestroy = typeof destroy === 'function';
+
   useEffect(() => {
     let result;
     effect().then((value) => result = value);
-    
-    if(typeof destroy === 'function'){
+
+    if (hasDestroy) {
       return () => destroy(result);
     }
-  }, inputs);
+  }, hasDestroy ? inputs : destroy);
 };

index.js

@@ -1,7 +1,5 @@
 declare module 'use-async-effect' {
-  declare function useAsyncEffect<V>(
-    effect: () => Promise<V>,
-    destroy?: ?(result?: V) => void,
-    inputs?: any[]
-  ): void;
+  declare function useAsyncEffect(effect: () => Promise<any>, inputs?: any[]): void;
+
+  declare function useAsyncEffect<V>(effect: () => Promise<V>, destroy?: ?(result?: V) => void, inputs?: any[]): void;
 }