diff --git a/.eslintrc.js b/.eslintrc.js
index 849d004..0a0effc 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -49,5 +49,8 @@ module.exports = {
     // }],
     // 'vue/valid-template-root': 'off',
     'vue/no-multiple-template-root': 'off',
+
+    'no-empty-function': 'off',
+    '@typescript-eslint/no-empty-function': ['warn'],
   },
 }
diff --git a/src/core/Camera.ts b/src/core/Camera.ts
index 5ca5033..727fcf1 100644
--- a/src/core/Camera.ts
+++ b/src/core/Camera.ts
@@ -1,5 +1,5 @@
 import { defineComponent } from 'vue'
-// import Object3D from '../core/Object3D';
+// import Object3D from '../core/Object3D'
 
 export default defineComponent({
   // TODO: eventually extend Object3D, for now: error 'injection "scene" not found'
diff --git a/src/core/Object3D.ts b/src/core/Object3D.ts
index b4dba13..c49e312 100644
--- a/src/core/Object3D.ts
+++ b/src/core/Object3D.ts
@@ -31,7 +31,7 @@ export default defineComponent({
 
       // TODO : fix lookat.x
       if (this.lookAt) this.o3d.lookAt(this.lookAt.x, this.lookAt.y, this.lookAt.z)
-      watch(() => this.lookAt, (v) => { this.o3d.lookAt(v.x, v.y, v.z); }, { deep: true })
+      watch(() => this.lookAt, (v) => { this.o3d.lookAt(v.x, v.y, v.z) }, { deep: true })
 
       this._parent = this.getParent()
       if (this.addToParent()) this.$emit('ready', this)
diff --git a/src/core/OrthographicCamera.ts b/src/core/OrthographicCamera.ts
index 370019b..e952579 100644
--- a/src/core/OrthographicCamera.ts
+++ b/src/core/OrthographicCamera.ts
@@ -23,11 +23,12 @@ export default defineComponent({
     }
   },
   created() {
-    bindProp(this, 'position', this.camera);
+    bindProp(this, 'position', this.camera)
 
-    ['left', 'right', 'top', 'bottom', 'near', 'far', 'zoom'].forEach(p => {
+    const watchProps = ['left', 'right', 'top', 'bottom', 'near', 'far', 'zoom']
+    watchProps.forEach(p => {
       watch(() => this[p], () => {
-        this.camera[p] = this[p];
+        this.camera[p] = this[p]
         this.camera.updateProjectionMatrix()
       })
     })
diff --git a/src/core/Renderer.ts b/src/core/Renderer.ts
index 0b3fc6b..777ee69 100644
--- a/src/core/Renderer.ts
+++ b/src/core/Renderer.ts
@@ -18,6 +18,7 @@ export default defineComponent({
   },
   setup() {
     const renderer: null | WebGLRenderer = null
+    const _render: {(): void} = () => {}
 
     const onMountedCallbacks: {(): void}[] = []
     const beforeRenderCallbacks: {(): void}[] = []
@@ -27,6 +28,7 @@ export default defineComponent({
       three: useThree(),
       renderer,
       raf: true,
+      _render,
       onMountedCallbacks,
       beforeRenderCallbacks,
       afterRenderCallbacks,
@@ -64,7 +66,7 @@ export default defineComponent({
       } else {
         requestAnimationFrame(this.renderLoop)
       }
-    };
+    }
 
     this.onMountedCallbacks.forEach(c => c())
   },
diff --git a/src/core/usePointer.ts b/src/core/usePointer.ts
index d7893c2..5503819 100644
--- a/src/core/usePointer.ts
+++ b/src/core/usePointer.ts
@@ -16,8 +16,8 @@ export interface PointerIntersectEventInterface {
   intersect?: Intersection
 }
 
+export type PointerCallbackType = (e: PointerEventInterface) => void
 export type PointerIntersectCallbackType = (e: PointerIntersectEventInterface) => void
-
 export type IntersectObject = Mesh | InstancedMesh
 
 export interface PointerConfigInterface {
@@ -29,15 +29,15 @@ export interface PointerConfigInterface {
   resetOnEnd?: boolean
   resetPosition?: Vector2
   resetPositionV3?: Vector3
-  onEnter?(e: PointerEventInterface): void
-  onMove?(e: PointerEventInterface): void
-  onLeave?(e: PointerEventInterface): void
-  onClick?(e: PointerEventInterface): void
-  onIntersectEnter: PointerIntersectCallbackType
-  onIntersectOver: PointerIntersectCallbackType
-  onIntersectMove: PointerIntersectCallbackType
-  onIntersectLeave: PointerIntersectCallbackType
-  onIntersectClick: PointerIntersectCallbackType
+  onEnter?: PointerCallbackType
+  onMove?: PointerCallbackType
+  onLeave?: PointerCallbackType
+  onClick?: PointerCallbackType
+  onIntersectEnter?: PointerIntersectCallbackType
+  onIntersectOver?: PointerIntersectCallbackType
+  onIntersectMove?: PointerIntersectCallbackType
+  onIntersectLeave?: PointerIntersectCallbackType
+  onIntersectClick?: PointerIntersectCallbackType
 }
 
 export interface PointerInterface {
diff --git a/src/core/useRaycaster.ts b/src/core/useRaycaster.ts
index c161517..d28e862 100644
--- a/src/core/useRaycaster.ts
+++ b/src/core/useRaycaster.ts
@@ -1,4 +1,4 @@
-import { Camera, Intersection, Plane, Raycaster, Vector2, Vector3 } from 'three';
+import { Camera, Intersection, Plane, Raycaster, Vector2, Vector3 } from 'three'
 import { IntersectObject } from './usePointer'
 
 export interface RaycasterInterface {
diff --git a/src/core/useThree.ts b/src/core/useThree.ts
index 52461cf..ad31fce 100644
--- a/src/core/useThree.ts
+++ b/src/core/useThree.ts
@@ -73,9 +73,9 @@ export default function useThree(): ThreeInterface {
   // const afterInitCallbacks: void[] = []
   // let afterResizeCallbacks: void[] = []
   // let beforeRenderCallbacks: void[] = []
-  const afterInitCallbacks: {(): void;}[] = []
-  let afterResizeCallbacks: {(): void;}[] = []
-  let beforeRenderCallbacks: {(): void;}[] = []
+  const afterInitCallbacks: {(): void}[] = []
+  let afterResizeCallbacks: {(): void}[] = []
+  let beforeRenderCallbacks: {(): void}[] = []
 
   const intersectObjects: IntersectObject[] = []
 
@@ -294,7 +294,8 @@ export default function useThree(): ThreeInterface {
       size.wHeight = oCamera.top - oCamera.bottom
     } else {
       const wsize = getCameraSize()
-      size.wWidth = wsize[0]; size.wHeight = wsize[1]
+      size.wWidth = wsize[0]
+      size.wHeight = wsize[1]
     }
   }