fix ts error

package.json

@@ -53,7 +53,7 @@
     "react-native": "*",
     "ts-jest": "^24.0.2",
     "prettier": "^1.18.2",
-    "typescript": "^3.0.3"
+    "typescript": "^3.8.0"
   },
   "peerDependencies": {
     "react": "^16.0.0",

src/index.ts

@@ -1,5 +1,7 @@
 import { IDraggableGridProps, DraggableGrid } from './draggable-grid'
 
-export { DraggableGrid, IDraggableGridProps }
+export { DraggableGrid }
+
+export type { IDraggableGridProps }
 
 export default DraggableGrid

yarn.lock

@@ -5815,9 +5815,10 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "http://registry.npm.taobao.org/typedarray/download/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-typescript@^3.0.3:
-  version "3.0.3"
-  resolved "http://registry.npm.taobao.org/typescript/download/typescript-3.0.3.tgz#4853b3e275ecdaa27f78fda46dc273a7eb7fc1c8"
+typescript@^3.8.0:
+  version "3.9.10"
+  resolved "https://npm.corp.kuaishou.com/typescript/-/typescript-3.9.10.tgz#70f3910ac7a51ed6bef79da7800690b19bf778b8"
+  integrity sha1-cPORCselHta+952ngAaQsZv3eLg=
 
 ua-parser-js@^0.7.18:
   version "0.7.18"