isolatedModules and preserving type clause

Author: gagoar

src/schema/connections.ts

@@ -18,7 +18,7 @@ import { getObjectsFromUrls } from './apiHelper';
 
 import { GraphQLInt, GraphQLList } from 'graphql';
 
-import { GraphQLObjectType, GraphQLFieldConfig } from 'graphql';
+import type { GraphQLObjectType, GraphQLFieldConfig } from 'graphql';
 
 /**
  * Constructs a GraphQL connection field config; it is assumed

src/schema/relayNode.ts

@@ -9,7 +9,7 @@
 
 import { getObjectFromTypeAndId } from './apiHelper';
 
-import { GraphQLObjectType } from 'graphql';
+import type { GraphQLObjectType } from 'graphql'
 
 import { nodeDefinitions, fromGlobalId } from 'graphql-relay';
 

tsconfig.json

@@ -11,6 +11,7 @@
     "sourceMap": true,
     "strict": true,
     "noImplicitAny": true,
+    "isolatedModules": true,
     "strictNullChecks": true,
     "strictFunctionTypes": true,
     "strictPropertyInitialization": true,