diff --git a/packages/bolt-connection/tsconfig.json b/packages/bolt-connection/tsconfig.json
index 89506a622..7e58a91e7 100644
--- a/packages/bolt-connection/tsconfig.json
+++ b/packages/bolt-connection/tsconfig.json
@@ -9,7 +9,8 @@
     "moduleResolution": "node",
     "downlevelIteration": true,
     "outDir": "lib",
-    "allowJs": true
+    "allowJs": true,
+    "isolatedModules": true
   },
   "include": ["src/**/*.js"]
 }
diff --git a/packages/core/src/graph-types.ts b/packages/core/src/graph-types.ts
index 49047235b..dbd442533 100644
--- a/packages/core/src/graph-types.ts
+++ b/packages/core/src/graph-types.ts
@@ -380,8 +380,6 @@ function isPath(obj: object): obj is Path {
 }
 
 export {
-  StandardDate,
-  NumberOrInteger,
   Node,
   isNode,
   Relationship,
@@ -393,3 +391,7 @@ export {
   PathSegment,
   isPathSegment
 }
+export type {
+  StandardDate,
+  NumberOrInteger,
+}
diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index 18509d07b..404541824 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -168,8 +168,6 @@ export {
   LocalDateTime,
   LocalTime,
   Time,
-  StandardDate,
-  NumberOrInteger,
   Node,
   isNode,
   Relationship,
@@ -185,19 +183,15 @@ export {
   queryType,
   ServerInfo,
   Notification,
-  NotificationPosition,
   Plan,
   ProfiledPlan,
   QueryStatistics,
   Stats,
   Result,
-  QueryResult,
-  ResultObserver,
   ConnectionProvider,
   Connection,
   Transaction,
   Session,
-  TransactionConfig,
   Driver,
   types,
   driver,
@@ -205,4 +199,13 @@ export {
   auth
 }
 
+export type {
+  StandardDate,
+  NumberOrInteger,
+  NotificationPosition,
+  QueryResult,
+  ResultObserver,
+  TransactionConfig,
+};
+
 export default forExport
diff --git a/packages/core/src/result-summary.ts b/packages/core/src/result-summary.ts
index 49cb6c23a..3daabebd2 100644
--- a/packages/core/src/result-summary.ts
+++ b/packages/core/src/result-summary.ts
@@ -536,11 +536,13 @@ export {
   queryType,
   ServerInfo,
   Notification,
-  NotificationPosition,
   Plan,
   ProfiledPlan,
   QueryStatistics,
   Stats
 }
+export type {
+  NotificationPosition,
+}
 
 export default ResultSummary
diff --git a/packages/core/src/result.ts b/packages/core/src/result.ts
index a5d841a91..2153937c6 100644
--- a/packages/core/src/result.ts
+++ b/packages/core/src/result.ts
@@ -339,4 +339,4 @@ function replaceStacktrace(error: Error, newStack?: string | null) {
 }
 
 export default Result
-export { QueryResult, ResultObserver }
+export type { QueryResult, ResultObserver }
diff --git a/packages/core/src/session.ts b/packages/core/src/session.ts
index b790416fd..2597a140c 100644
--- a/packages/core/src/session.ts
+++ b/packages/core/src/session.ts
@@ -446,4 +446,4 @@ function _createTransactionExecutor(config?: {
 }
 
 export default Session
-export { TransactionConfig }
+export type { TransactionConfig }
diff --git a/packages/core/tsconfig.json b/packages/core/tsconfig.json
index 69799a293..f68b67539 100644
--- a/packages/core/tsconfig.json
+++ b/packages/core/tsconfig.json
@@ -10,7 +10,8 @@
     "downlevelIteration": true,
     "outDir": "lib",
     "declaration": true,
-    "declarationDir": "types"
+    "declarationDir": "types",
+    "isolatedModules": true
   },
   "include": ["src/**/*.ts"]
 }
diff --git a/packages/neo4j-driver-lite/src/index.ts b/packages/neo4j-driver-lite/src/index.ts
index 7e5716659..a972f951d 100644
--- a/packages/neo4j-driver-lite/src/index.ts
+++ b/packages/neo4j-driver-lite/src/index.ts
@@ -473,26 +473,18 @@ export {
   temporal,
   Driver,
   Result,
-  QueryResult,
   Record,
   ResultSummary,
-  AuthToken,
-  Config,
-  EncryptionLevel,
-  TrustStrategy,
-  SessionMode,
   Node,
   Relationship,
   UnboundRelationship,
   PathSegment,
   Path,
   Integer,
-  ResultObserver,
   Plan,
   ProfiledPlan,
   QueryStatistics,
   Notification,
-  NotificationPosition,
   ServerInfo,
   Session,
   Transaction,
@@ -506,4 +498,14 @@ export {
   ConnectionProvider,
   Connection
 }
+export type {
+  QueryResult,
+  AuthToken,
+  Config,
+  EncryptionLevel,
+  TrustStrategy,
+  SessionMode,
+  ResultObserver,
+  NotificationPosition,
+}
 export default forExport
diff --git a/packages/neo4j-driver-lite/tsconfig.json b/packages/neo4j-driver-lite/tsconfig.json
index 69799a293..f68b67539 100644
--- a/packages/neo4j-driver-lite/tsconfig.json
+++ b/packages/neo4j-driver-lite/tsconfig.json
@@ -10,7 +10,8 @@
     "downlevelIteration": true,
     "outDir": "lib",
     "declaration": true,
-    "declarationDir": "types"
+    "declarationDir": "types",
+    "isolatedModules": true
   },
   "include": ["src/**/*.ts"]
 }