diff --git a/src/core/index.ts b/src/core/index.ts
index a7d81b4..7c49cc4 100644
--- a/src/core/index.ts
+++ b/src/core/index.ts
@@ -8,3 +8,6 @@ export { default as Object3D } from './Object3D'
 export { default as Raycaster } from './Raycaster'
 
 export { default as CubeCamera } from './CubeCamera'
+
+export type { RendererInterface } from './Renderer'
+export type { Object3DInterface } from './Object3D'
diff --git a/src/materials/index.ts b/src/materials/index.ts
index 2ecd0b4..c1b1a5c 100644
--- a/src/materials/index.ts
+++ b/src/materials/index.ts
@@ -13,3 +13,5 @@ export { default as Texture } from './Texture'
 export { default as CubeTexture } from './CubeTexture'
 
 export { default as PointsMaterial } from './PointsMaterial'
+
+export type { MaterialInterface } from './Material'
diff --git a/src/meshes/index.ts b/src/meshes/index.ts
index 91a2657..6c20836 100644
--- a/src/meshes/index.ts
+++ b/src/meshes/index.ts
@@ -23,3 +23,5 @@ export { default as InstancedMesh } from './InstancedMesh'
 export { default as Sprite } from './Sprite'
 
 export { default as Points } from './Points'
+
+export type { MeshInterface } from './Mesh'