feat: already generated TC may be obtained via schemaComposer.getTC(mongooseSchema)

Removed old logic, where generated schemas stored in the mongoose object 
`model.schema._gqcTypeComposer`.
Related: 
#26 (comment)

Author: nodkz

src/__tests__/composeWithMongoose-test.js

@@ -14,7 +14,6 @@ afterAll(() => UserModel.base.disconnect());
 describe('composeWithMongoose ->', () => {
   beforeEach(() => {
     schemaComposer.clear();
-    UserModel.schema._gqcTypeComposer = undefined;
   });
 
   describe('MongooseModelToTypeComposer()', () => {
@@ -27,7 +26,7 @@ describe('composeWithMongoose ->', () => {
       it('should set type name from model or opts.name', () => {
         expect(composeWithMongoose(UserModel).getTypeName()).toBe(UserModel.modelName);
 
-        UserModel.schema._gqcTypeComposer = undefined;
+        schemaComposer.clear();
         expect(composeWithMongoose(UserModel, { name: 'Ok' }).getTypeName()).toBe('Ok');
       });
 
@@ -48,6 +47,13 @@ describe('composeWithMongoose ->', () => {
         expect(tc.getFieldType('_id')).toBeInstanceOf(GraphQLNonNull);
         expect(tc.getFieldType('_id').ofType).toBe(GraphQLMongoID);
       });
+
+      it('composeWithMongoose should generate new TypeComposer (without cache)', () => {
+        const tc1: any = composeWithMongoose(UserModel);
+        schemaComposer.clear();
+        const tc2: any = composeWithMongoose(UserModel);
+        expect(tc1).not.toBe(tc2);
+      });
     });
 
     describe('filterFields()', () => {

src/__tests__/integration-test.js

@@ -11,7 +11,6 @@ afterAll(() => UserModel.base.disconnect());
 describe('integration tests', () => {
   beforeEach(() => {
     schemaComposer.clear();
-    UserModel.schema._gqcTypeComposer = undefined;
   });
 
   describe('check subdocuments', () => {

src/fieldsConverter.js

@@ -15,7 +15,6 @@ type ComposeScalarType = string | GraphQLScalarType;
 type ComposeOutputType = TypeComposer | ComposeScalarType | EnumTypeComposer | [ComposeOutputType];
 
 export type MongoosePseudoModelT = {
-  _gqcTypeComposer?: TypeComposer,
   schema: Schema<any>,
 };
 
@@ -117,19 +116,21 @@ export function convertModelToGraphQL(
 ): TypeComposer {
   const schemaComposer = sc || globalSchemaComposer;
 
-  // if model already has generated TypeComposer early, then return it
-  const modelSchema: any = model.schema;
-  if (modelSchema && modelSchema._gqcTypeComposer) {
-    return modelSchema._gqcTypeComposer;
-  }
-
   if (!typeName) {
     throw new Error('You provide empty name for type. `name` argument should be non-empty string.');
   }
 
-  const typeComposer = schemaComposer.getOrCreateTC(typeName);
+  // if model already has generated TypeComposer early, then return it
+  // $FlowFixMe await landing [email protected] or above
+  if (schemaComposer.has(model.schema)) {
+    // $FlowFixMe await landing [email protected] or above
+    return schemaComposer.getTC(model.schema);
+  }
 
-  modelSchema._gqcTypeComposer = typeComposer; // eslint-disable-line no-param-reassign
+  const typeComposer = schemaComposer.getOrCreateTC(typeName);
+  // $FlowFixMe await landing [email protected] or above
+  schemaComposer.set(model.schema, typeComposer);
+  schemaComposer.set(typeName, typeComposer);
 
   const mongooseFields = getFieldsFromModel(model);
   const graphqlFields = {};
@@ -161,7 +162,7 @@ export function convertModelToGraphQL(
 }
 
 export function convertSchemaToGraphQL(
-  schema: Object, // MongooseModelSchemaT, TODO use Model from mongoose_v4.x.x definition when it will be public
+  schema: Schema<any>,
   typeName: string,
   sc?: SchemaComposer<any>
 ): TypeComposer {
@@ -171,15 +172,18 @@ export function convertSchemaToGraphQL(
     throw new Error('You provide empty name for type. `name` argument should be non-empty string.');
   }
 
-  if (schema._gqcTypeComposer) {
-    return schema._gqcTypeComposer;
+  // $FlowFixMe await landing [email protected] or above
+  if (schemaComposer.has(schema)) {
+    // $FlowFixMe await landing [email protected] or above
+    return schemaComposer.getTC(schema);
   }
 
   const tc = convertModelToGraphQL({ schema }, typeName, schemaComposer);
   // also generate InputType
   tc.getInputTypeComposer();
 
-  schema._gqcTypeComposer = tc; // eslint-disable-line
+  // $FlowFixMe await landing [email protected] or above
+  schemaComposer.set(schema, tc);
   return tc;
 }
 

src/resolvers/__tests__/count-test.js

@@ -13,7 +13,6 @@ describe('count() ->', () => {
   let UserTC;
 
   beforeEach(() => {
-    UserModel.schema._gqcTypeComposer = undefined;
     schemaComposer.clear();
     UserTC = convertModelToGraphQL(UserModel, 'User', schemaComposer);
   });

src/resolvers/__tests__/createOne-test.js

@@ -15,7 +15,6 @@ describe('createOne() ->', () => {
   let UserTC;
 
   beforeEach(() => {
-    UserModel.schema._gqcTypeComposer = undefined;
     schemaComposer.clear();
     UserTC = convertModelToGraphQL(UserModel, 'User', schemaComposer);
     UserTC.setRecordIdFn(source => (source ? `${source._id}` : ''));

src/resolvers/__tests__/findById-test.js

@@ -17,10 +17,7 @@ describe('findById() ->', () => {
 
   beforeEach(() => {
     schemaComposer.clear();
-    UserModel.schema._gqcTypeComposer = undefined;
     UserTC = convertModelToGraphQL(UserModel, 'User', schemaComposer);
-
-    PostModel.schema._gqcTypeComposer = undefined;
     PostTypeComposer = convertModelToGraphQL(PostModel, 'Post', schemaComposer);
   });
 

src/resolvers/__tests__/findByIds-test.js

@@ -17,10 +17,7 @@ describe('findByIds() ->', () => {
 
   beforeEach(() => {
     schemaComposer.clear();
-    UserModel.schema._gqcTypeComposer = undefined;
     UserTC = convertModelToGraphQL(UserModel, 'User', schemaComposer);
-
-    PostModel.schema._gqcTypeComposer = undefined;
     PostTypeComposer = convertModelToGraphQL(PostModel, 'Post', schemaComposer);
   });
 

src/resolvers/__tests__/findMany-test.js

@@ -13,7 +13,6 @@ describe('findMany() ->', () => {
 
   beforeEach(() => {
     schemaComposer.clear();
-    UserModel.schema._gqcTypeComposer = undefined;
     UserTC = convertModelToGraphQL(UserModel, 'User', schemaComposer);
   });
 

src/resolvers/__tests__/findOne-test.js

@@ -13,7 +13,6 @@ let UserTC;
 
 beforeEach(() => {
   schemaComposer.clear();
-  UserModel.schema._gqcTypeComposer = undefined;
   UserTC = convertModelToGraphQL(UserModel, 'User', schemaComposer);
 });
 

src/resolvers/__tests__/removeById-test.js

@@ -16,7 +16,6 @@ describe('removeById() ->', () => {
 
   beforeEach(() => {
     schemaComposer.clear();
-    UserModel.schema._gqcTypeComposer = undefined;
     UserTC = convertModelToGraphQL(UserModel, 'User', schemaComposer);
     UserTC.setRecordIdFn(source => (source ? `${source._id}` : ''));
   });