Fix flow errors (#101)

Author: Amwam

lib/KeyboardAwareMixin.js

@@ -4,6 +4,8 @@ import { PropTypes } from 'react'
 import ReactNative, { TextInput, Keyboard, UIManager } from 'react-native'
 import TimerMixin from 'react-timer-mixin'
 
+import type { Event } from 'react-native'
+
 const _KAM_DEFAULT_TAB_BAR_HEIGHT: number = 49
 const _KAM_KEYBOARD_OPENING_TIME: number = 250
 const _KAM_EXTRA_HEIGHT: number = 75
@@ -127,15 +129,21 @@ const KeyboardAwareMixin = {
   /**
    * @param extraHeight: takes an extra height in consideration.
    */
-  scrollToFocusedInput: function (reactNode: Object, extraHeight: number = this.props.extraHeight) {
+  scrollToFocusedInput: function (reactNode: Object, extraHeight: number) {
+    if (extraHeight === undefined) {
+        extraHeight = this.props.extraHeight;
+    }
     this.setTimeout(() => {
       this.getScrollResponder().scrollResponderScrollNativeHandleToKeyboard(
         reactNode, extraHeight, true
       )
     }, _KAM_KEYBOARD_OPENING_TIME)
   },
 
-  scrollToFocusedInputWithNodeHandle: function (nodeID: number, extraHeight: number = this.props.extraHeight) {
+  scrollToFocusedInputWithNodeHandle: function (nodeID: number, extraHeight: number) {
+    if (extraHeight === undefined) {
+        extraHeight = this.props.extraHeight;
+    }
     const reactNode = ReactNative.findNodeHandle(nodeID)
     this.scrollToFocusedInput(reactNode, extraHeight + this.props.extraScrollHeight)
   },
@@ -144,7 +152,7 @@ const KeyboardAwareMixin = {
 
   defaultResetScrollToCoords: null, // format: {x: 0, y: 0}
 
-  handleOnScroll: function (e) {
+  handleOnScroll: function (e: Event) {
     this.position = e.nativeEvent.contentOffset
   },
 }

package.json

@@ -5,7 +5,8 @@
   "main": "index.js",
   "scripts": {
     "lint": "eslint lib",
-    "test": "npm run lint"
+    "test": "npm run lint",
+    "flow": "flow check"
   },
   "repository": {
     "type": "git",
@@ -39,6 +40,7 @@
   "devDependencies": {
     "babel-eslint": "^6.0.4",
     "eslint": "^3.17.1",
-    "eslint-plugin-react": "^6.10.0"
+    "eslint-plugin-react": "^6.10.0",
+    "flow-bin": "0.33.0"
   }
 }