Add support for Double prop type

Summary: Support a prop-type `Double`, in addition to `Float`, for flow typing and codegen of components.

Reviewed By: TheSavior

Differential Revision: D16812812

fbshipit-source-id: b5588b3218636283a4e9c5d17212dd0b92986eb9

packages/react-native-codegen/src/generators/components/GeneratePropsJavaInterface.js

@@ -46,6 +46,8 @@ function getJavaValueForProp(prop: PropTypeShape, imports): string {
       return '@Nullable String value';
     case 'Int32TypeAnnotation':
       return 'int value';
+    case 'DoubleTypeAnnotation':
+      return 'double value';
     case 'FloatTypeAnnotation':
       return 'float value';
     case 'NativePrimitiveTypeAnnotation':
@@ -98,6 +100,8 @@ function getCommandArgJavaType(param) {
   switch (param.typeAnnotation.type) {
     case 'BooleanTypeAnnotation':
       return 'boolean';
+    case 'DoubleTypeAnnotation':
+      return 'double';
     case 'FloatTypeAnnotation':
       return 'float';
     case 'Int32TypeAnnotation':