Add typings for fe and createSnapshot. (#792)

Author: stephenh

packages/jest-react-fela/index.d.ts

@@ -0,0 +1,5 @@
+import * as React from 'react'
+
+declare module 'jest-react-fela' {
+  export function createSnapshot(component: React.ReactElement): string
+}

packages/jest-react-fela/package.json

@@ -2,6 +2,7 @@
   "name": "jest-react-fela",
   "version": "11.3.0",
   "description": "Jest helpers for react-fela",
+  "typings": "index.d.ts",
   "main": "lib/index.js",
   "module": "es/index.js",
   "jsnext:main": "es/index.js",

packages/react-fela/index.d.ts

@@ -584,4 +584,6 @@ declare module "react-fela" {
     }
 
     export function useFela<T = {}, P = {}>(props?: P): FelaHookProps<T, P>
+
+    export const fe: typeof React.createElement;
 }