Fix flowtype errors

Author: nodkz

src/composeWithMongoose.js

@@ -32,6 +32,7 @@ export function composeWithMongoose(
     prepareFields(typeComposer, opts.fields);
   }
 
+  // $FlowFixMe
   typeComposer.setRecordIdFn(source => (source ? `${source._id}` : ''));
 
   createInputType(typeComposer, opts.inputType);

src/definition.js

@@ -2,6 +2,7 @@
 /* eslint-disable */
 
 import type { TypeComposer } from 'graphql-compose';
+import type { ProjectionType } from 'graphql-compose/lib/definition';
 import type { connectionSortMapOpts as _connectionSortMapOpts} from 'graphql-compose-connection/lib/definition';
 export type connectionSortMapOpts = _connectionSortMapOpts;
 
@@ -100,6 +101,7 @@ export type GraphQLResolveInfo = _GraphQLResolveInfo;
 export type ResolverMWResolveFn = _ResolverMWResolveFn;
 export type ExtendedResolveParams = ResolveParams & {
   query: MongooseQuery,
+  projection: ProjectionType,
 };
 
 
@@ -191,6 +193,7 @@ export type filterHelperArgsOpts = {
   onlyIndexed?: boolean,
   requiredFields?: string | string[],
   operators?: filterOperatorsOpts | false,
+  removeFields?: string | string[],
 };
 
 export type filterOperatorNames =  'gt' | 'gte' | 'lt' | 'lte' | 'ne' | 'in[]' | 'nin[]';

src/resolvers/helpers/filter.js

@@ -216,4 +216,6 @@ export function addFieldsWithOperator(
       description: 'List of fields that can be filtered via operators',
     });
   }
+
+  return operatorsComposer;
 }