add ‘GraphQL’ prefix to input object types (#526)

* add ‘GraphQL’ prefix to input object types

Types with names like `InputObjectConfig` are inconsistent with all other type names. This makes the types awkward to import and use. This may be considered a breaking change (although I’d venture to believe very few people if any are importing this specific file to get at the types). If you’d like to mitigate breakage we could re-export aliases like so:

```js
export type InputObjectConfig = GraphQLInputObjectConfig
```

* Update definition.js

* Update definition.js

src/type/definition.js

@@ -890,22 +890,22 @@ export class GraphQLInputObjectType {
   name: string;
   description: ?string;
 
-  _typeConfig: InputObjectConfig;
-  _fields: InputObjectFieldMap;
+  _typeConfig: GraphQLInputObjectTypeConfig;
+  _fields: GraphQLInputFieldDefinitionMap;
 
-  constructor(config: InputObjectConfig) {
+  constructor(config: GraphQLInputObjectTypeConfig) {
     invariant(config.name, 'Type must be named.');
     assertValidName(config.name);
     this.name = config.name;
     this.description = config.description;
     this._typeConfig = config;
   }
 
-  getFields(): InputObjectFieldMap {
+  getFields(): GraphQLInputFieldDefinitionMap {
     return this._fields || (this._fields = this._defineFieldMap());
   }
 
-  _defineFieldMap(): InputObjectFieldMap {
+  _defineFieldMap(): GraphQLInputFieldDefinitionMap {
     const fieldMap: any = resolveThunk(this._typeConfig.fields);
     invariant(
       isPlainObj(fieldMap),
@@ -940,31 +940,31 @@ export class GraphQLInputObjectType {
   }
 }
 
-export type InputObjectConfig = {
+export type GraphQLInputObjectTypeConfig = {
   name: string;
-  fields: Thunk<InputObjectConfigFieldMap>;
+  fields: Thunk<GraphQLInputFieldConfigMap>;
   description?: ?string;
 };
 
-export type InputObjectFieldConfig = {
+export type GraphQLInputFieldConfig = {
   type: GraphQLInputType;
   defaultValue?: mixed;
   description?: ?string;
 };
 
-export type InputObjectConfigFieldMap = {
-  [fieldName: string]: InputObjectFieldConfig;
+export type GraphQLInputFieldConfigMap = {
+  [fieldName: string]: GraphQLInputFieldConfig;
 };
 
-export type InputObjectField = {
+export type GraphQLInputFieldDefinition = {
   name: string;
   type: GraphQLInputType;
   defaultValue?: mixed;
   description?: ?string;
 };
 
-export type InputObjectFieldMap = {
-  [fieldName: string]: InputObjectField;
+export type GraphQLInputFieldDefinitionMap = {
+  [fieldName: string]: GraphQLInputFieldDefinition;
 };