Fix for "Type 'Timeout' is not assignable to type 'number'" (#272)

* Fix for "Type 'Timeout' is not assignable to type 'number'"

* Update tsconfig.json

Author: retyui

template/tsconfig.json

@@ -32,7 +32,7 @@
     // "paths": {},                                      /* Specify a set of entries that re-map imports to additional lookup locations. */
     // "rootDirs": [],                                   /* Allow multiple folders to be treated as one when resolving modules. */
     // "typeRoots": [],                                  /* Specify multiple folders that act like `./node_modules/@types`. */
-    // "types": [],                                      /* Specify type package names to be included without being referenced in a source file. */
+    "types": ["react-native", "jest"],                   /* Specify type package names to be included without being referenced in a source file. */
     // "allowUmdGlobalAccess": true,                     /* Allow accessing UMD globals from modules. */
     "resolveJsonModule": true,                           /* Enable importing .json files */
     // "noResolve": true,                                /* Disallow `import`s, `require`s or `<reference>`s from expanding the number of files TypeScript should add to a project. */