change error handlign syntax to apollo v4 standards

Author: iancdavis

package.json

@@ -126,7 +126,7 @@
   },
   "homepage": "https://github.com/open-source-labs/ReacType#readme",
   "dependencies": {
-    "@apollo/client": "^3.6.9",
+    "@apollo/client": "^3.7.10",
     "@apollo/federation": "^0.38.1",
     "@apollo/server": "^4.4.1",
     "@babel/cli": "^7.18.10",
@@ -158,7 +158,6 @@
     "fs": "^0.0.1-security",
     "graphql": "^16.6.0",
     "identity-obj-proxy": "^3.0.0",
-    "immutable": "^4.1.0",
     "js-cookie": "^3.0.1",
     "localforage": "^1.10.0",
     "lodash": "^4.17.21",

server/graphQL/resolvers/mutation.js

@@ -1,5 +1,10 @@
-const { UserInputError } = require('apollo-server-express');
+// const { ApolloServerErrorCode.BAD_USER_INPUT } = require('apollo-server-express');
+
+import { ApolloServerErrorCode } from '@apollo/server/errors';// v4 syntax
+//now using ApolloServerErrorCode.BAD_USER_INPUT in place of ApolloServerErrorCode.BAD_USER_INPUT
+
 const { Projects, Users, Comments } = require('../../models/reactypeModels');
+
 /*
 * resolvers are functions that handles graphQL requests. This file defines the logic for graphQL mutation requests
 * Link to Apollo Mutations:
@@ -23,7 +28,7 @@ const Project = {
       });
     }
 
-    throw new UserInputError('Project is not found. Please try another project ID', {
+    throw new ApolloServerErrorCode.BAD_USER_INPUT('Project is not found. Please try another project ID', {
       argumentName: 'projId',
     });
   },
@@ -33,7 +38,7 @@ const Project = {
     const target = await Projects.findOne(filter);
 
     if (!target) {
-      throw new UserInputError('Project is not found. Please try another project ID', {
+      throw new ApolloServerErrorCode.BAD_USER_INPUT('Project is not found. Please try another project ID', {
         argumentName: 'projId',
       });
     }
@@ -63,10 +68,10 @@ const Project = {
         });
       }
 
-      throw new UserInputError('Internal Server Error');
+      throw new ApolloServerErrorCode.BAD_USER_INPUT('Internal Server Error');
     }
 
-    throw new UserInputError('User is not found. Please try another user ID', {
+    throw new ApolloServerErrorCode.BAD_USER_INPUT('User is not found. Please try another user ID', {
       argumentName: 'userId',
     });
   },
@@ -87,7 +92,7 @@ const Project = {
       });
     }
 
-    throw new UserInputError('Project is not found. Please try another project ID', {
+    throw new ApolloServerErrorCode.BAD_USER_INPUT('Project is not found. Please try another project ID', {
       argumentName: 'projId',
     });
   },
@@ -109,7 +114,7 @@ const Project = {
       });
     }
 
-    throw new UserInputError('Project is not found. Please try another project ID', {
+    throw new ApolloServerErrorCode.BAD_USER_INPUT('Project is not found. Please try another project ID', {
       argumentName: 'projId',
     });
   },
@@ -145,7 +150,7 @@ const Project = {
       });
     }
 
-    throw new UserInputError('Project cannot be found. Please try another project ID', {
+    throw new ApolloServerErrorCode.BAD_USER_INPUT('Project cannot be found. Please try another project ID', {
       argumentName: 'projId',
     });
   },