diff --git a/.eslintrc.json b/.eslintrc.json
index 887350b0..1c60b238 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -36,7 +36,7 @@
     "import/namespace": "off",
     "import/default": "off",
     "@typescript-eslint/explicit-module-boundary-types": "off",
-    "no-unused-vars": ["warn"],
+    "no-unused-vars": ["off"],
     "no-var": "error",
     "react/jsx-uses-react": "error",
     "react/jsx-uses-vars": "error",
@@ -44,8 +44,7 @@
     "@typescript-eslint/no-use-before-define": "off",
     "@typescript-eslint/no-empty-function": "off",
     "@typescript-eslint/no-empty-interface": "off",
-    "@typescript-eslint/no-explicit-any": "off",
-    "jest/consistent-test-it": ["error", { "fn": "it", "withinDescribe": "it" }]
+    "@typescript-eslint/no-explicit-any": "off"
   },
   "settings": {
     "react": {
@@ -68,6 +67,13 @@
       "parserOptions": {
         "project": ["./tsconfig.json", "./storybook/tsconfig.json"]
       }
+    },
+    {
+      // enable the rule specifically for TypeScript files
+      "files": ["*.ts", "*.tsx"],
+      "rules": {
+        "@typescript-eslint/explicit-function-return-type": ["error", { "allowHigherOrderFunctions": true }]
+      }
     }
   ]
 }
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 043b3574..081bd25c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -24,7 +24,7 @@ jobs:
         # there's a build step for post installation so we don't run build when "testing"
         run: yarn install
       - name: Lint test 🧪
-        run: yarn eslint:ci
+        run: yarn lint:ci
       - name: Prettier test
         run: yarn prettier:check
       - name: Type check
diff --git a/demos/ssr/components/Lights.tsx b/demos/ssr/components/Lights.tsx
index 3b7f2cf2..0241f0a4 100644
--- a/demos/ssr/components/Lights.tsx
+++ b/demos/ssr/components/Lights.tsx
@@ -1,4 +1,4 @@
-export const Lights = () => {
+export const Lights = (): JSX.Element => {
   return (
     <group>
       <spotLight position={[-3, 6, -4]} intensity={10} angle={Math.PI / 4} decay={3.5} distance={35} penumbra={2} />
diff --git a/demos/ssr/components/Scene.tsx b/demos/ssr/components/Scene.tsx
index d791294a..96debb2d 100644
--- a/demos/ssr/components/Scene.tsx
+++ b/demos/ssr/components/Scene.tsx
@@ -5,7 +5,7 @@ import { Mesh } from 'three'
 import { Lights } from './Lights'
 import { Controls } from './Controls'
 
-export const Scene = () => {
+export const Scene = (): JSX.Element => {
   const meshRef = useRef<Mesh>()
 
   useFrame((_, delta) => {
diff --git a/demos/ssr/pages/_app.tsx b/demos/ssr/pages/_app.tsx
index f96aa436..db3af8d0 100644
--- a/demos/ssr/pages/_app.tsx
+++ b/demos/ssr/pages/_app.tsx
@@ -1,5 +1,6 @@
 import React from 'react'
 import { createGlobalStyle } from 'styled-components'
+import type { AppProps } from 'next/app'
 
 const GlobalStyle = createGlobalStyle`
     *,
@@ -45,7 +46,7 @@ const GlobalStyle = createGlobalStyle`
     }
 `
 
-const App = ({ Component, pageProps }) => {
+const App = ({ Component, pageProps }: AppProps): JSX.Element => {
   return (
     <>
       <Component {...pageProps} />
diff --git a/demos/ssr/pages/_document.tsx b/demos/ssr/pages/_document.tsx
index 9c9b1d68..a2b9a912 100644
--- a/demos/ssr/pages/_document.tsx
+++ b/demos/ssr/pages/_document.tsx
@@ -1,15 +1,21 @@
-import Document, { Html, Head, Main, NextScript } from 'next/document'
+import Document, { Html, Head, Main, NextScript, DocumentContext } from 'next/document'
 import { ServerStyleSheet } from 'styled-components'
 
 export default class Doc extends Document {
-  static async getInitialProps(ctx) {
+  static async getInitialProps(
+    ctx: DocumentContext,
+  ): Promise<{
+    styles: JSX.Element
+    html: string
+    head?: (JSX.Element | null)[] | undefined
+  }> {
     const sheet = new ServerStyleSheet()
     const originalRenderPage = ctx.renderPage
 
     try {
-      ctx.renderPage = () =>
+      ctx.renderPage = (): ReturnType<DocumentContext['renderPage']> =>
         originalRenderPage({
-          enhanceApp: (App) => (props) => sheet.collectStyles(<App {...props} />),
+          enhanceApp: (App) => (props): React.ReactElement => sheet.collectStyles(<App {...props} />),
         })
 
       const initialProps = await Document.getInitialProps(ctx)
@@ -27,7 +33,7 @@ export default class Doc extends Document {
     }
   }
 
-  render() {
+  render(): JSX.Element {
     return (
       <Html lang="en">
         <Head />
diff --git a/demos/ssr/pages/index.tsx b/demos/ssr/pages/index.tsx
index f770eefb..7418f8cb 100644
--- a/demos/ssr/pages/index.tsx
+++ b/demos/ssr/pages/index.tsx
@@ -3,7 +3,7 @@ import styled from 'styled-components'
 
 import { Scene } from '../components/Scene'
 
-export default function IndexPage() {
+export default function IndexPage(): JSX.Element {
   return (
     <Root>
       <Canvas>
diff --git a/package.json b/package.json
index 070558c7..e6911c78 100644
--- a/package.json
+++ b/package.json
@@ -9,8 +9,8 @@
     "build": "rollup -c && npm run copy",
     "build-storybook": "build-storybook -s ./.storybook/public",
     "copy": "copyfiles package.json README.md LICENSE dist && json -I -f dist/package.json -e \"this.private=false; this.devDependencies=undefined; this.optionalDependencies=undefined; this.scripts=undefined; this.husky=undefined; this.prettier=undefined; this.jest=undefined; this['lint-staged']=undefined;\"",
-    "eslint": "eslint --cache --fix src/**/*.ts",
-    "eslint:ci": "eslint src/**/*.ts",
+    "lint": "eslint --cache --fix src/**/*.ts",
+    "lint:ci": "eslint src/**/*.ts",
     "prebuild": "rimraf dist && npm run typegen",
     "prepare": "npm run build",
     "prettier:write": "prettier --write .",
@@ -36,6 +36,9 @@
     "url": "git+https://github.com/pmndrs/three-stdlib.git"
   },
   "author": "Paul Henschel",
+  "maintainers": [
+    "Josh Ellis (https://github.com/joshuaellis"
+  ],
   "license": "MIT",
   "bugs": {
     "url": "https://github.com/pmndrs/three-stdlib/issues"
@@ -60,8 +63,8 @@
     "@storybook/html": "^6.1.21",
     "@storybook/preset-typescript": "^3.0.0",
     "@types/three": "^0.126.0",
-    "@typescript-eslint/eslint-plugin": "^4.15.2",
-    "@typescript-eslint/parser": "^4.15.2",
+    "@typescript-eslint/eslint-plugin": "^4.18.0",
+    "@typescript-eslint/parser": "^4.18.0",
     "babel-eslint": "^10.1.0",
     "babel-loader": "^8.2.2",
     "babel-plugin-transform-react-remove-prop-types": "^0.4.24",
diff --git a/src/controls/DeviceOrientationControls.ts b/src/controls/DeviceOrientationControls.ts
index 9ef8de8f..83e2418f 100644
--- a/src/controls/DeviceOrientationControls.ts
+++ b/src/controls/DeviceOrientationControls.ts
@@ -11,7 +11,7 @@ class DeviceOrientationControls extends EventDispatcher {
   private EPS = 0.000001
 
   enabled = true
-  deviceOrientation = { alpha: 0, beta: 0, gamma: 0 }
+  deviceOrientation: Partial<DeviceOrientationEvent> = { alpha: 0, beta: 0, gamma: 0 }
   screenOrientation: string | number = 0
   alphaOffset = 0 // radians
 
@@ -24,11 +24,11 @@ class DeviceOrientationControls extends EventDispatcher {
     this.connect()
   }
 
-  private onDeviceOrientationChangeEvent = (event: any) => {
+  private onDeviceOrientationChangeEvent = (event: DeviceOrientationEvent): void => {
     this.deviceOrientation = event
   }
 
-  private onScreenOrientationChangeEvent = () => {
+  private onScreenOrientationChangeEvent = (): void => {
     this.screenOrientation = window.orientation || 0
   }
 
@@ -44,14 +44,14 @@ class DeviceOrientationControls extends EventDispatcher {
     beta: number,
     gamma: number,
     orient: number,
-  ) => {
+  ): void => {
     this.euler.set(beta, alpha, -gamma, 'YXZ') // 'ZXY' for the device, but 'YXZ' for us
     quaternion.setFromEuler(this.euler) // orient the device
     quaternion.multiply(this.q1) // camera looks out the back of the device, not the top
     quaternion.multiply(this.q0.setFromAxisAngle(this.zee, -orient)) // adjust for screen orientation
   }
 
-  connect = () => {
+  connect = (): void => {
     this.onScreenOrientationChangeEvent() // run once on load
 
     // iOS 13+
@@ -78,7 +78,7 @@ class DeviceOrientationControls extends EventDispatcher {
     this.enabled = true
   }
 
-  disconnect = () => {
+  disconnect = (): void => {
     window.removeEventListener('orientationchange', this.onScreenOrientationChangeEvent)
     window.removeEventListener('deviceorientation', this.onDeviceOrientationChangeEvent)
 
@@ -86,7 +86,7 @@ class DeviceOrientationControls extends EventDispatcher {
   }
 
   private lastQuaternion = new Quaternion()
-  update = () => {
+  update = (): void => {
     if (this.enabled === false) return
 
     const device = this.deviceOrientation
@@ -106,7 +106,7 @@ class DeviceOrientationControls extends EventDispatcher {
     }
   }
 
-  dispose = () => this.disconnect()
+  dispose = (): void => this.disconnect()
 }
 
 export { DeviceOrientationControls }
diff --git a/src/controls/DragControls.ts b/src/controls/DragControls.ts
index 1c7a36f0..df051a88 100644
--- a/src/controls/DragControls.ts
+++ b/src/controls/DragControls.ts
@@ -30,7 +30,7 @@ class DragControls extends EventDispatcher {
     this.activate()
   }
 
-  activate = () => {
+  activate = (): void => {
     this._domElement.addEventListener('pointermove', this.onPointerMove)
     this._domElement.addEventListener('pointerdown', this.onPointerDown)
     this._domElement.addEventListener('pointerup', this.onPointerCancel)
@@ -40,7 +40,7 @@ class DragControls extends EventDispatcher {
     this._domElement.addEventListener('touchend', this.onTouchEnd)
   }
 
-  deactivate = () => {
+  deactivate = (): void => {
     this._domElement.removeEventListener('pointermove', this.onPointerMove)
     this._domElement.removeEventListener('pointerdown', this.onPointerDown)
     this._domElement.removeEventListener('pointerup', this.onPointerCancel)
@@ -53,11 +53,11 @@ class DragControls extends EventDispatcher {
   }
 
   // TODO: confirm if this can be removed?
-  dispose = () => this.deactivate()
+  dispose = (): void => this.deactivate()
 
-  getObjects = () => this._objects
+  getObjects = (): Object3D[] => this._objects
 
-  private onMouseMove = (event: MouseEvent) => {
+  private onMouseMove = (event: MouseEvent): void => {
     const rect = this._domElement.getBoundingClientRect()
 
     this._mouse.x = ((event.clientX - rect.left) / rect.width) * 2 - 1
@@ -104,7 +104,7 @@ class DragControls extends EventDispatcher {
     }
   }
 
-  private onMouseDown = (event: MouseEvent) => {
+  private onMouseDown = (event: MouseEvent): void => {
     event.preventDefault()
 
     this._intersections.length = 0
@@ -126,7 +126,7 @@ class DragControls extends EventDispatcher {
     }
   }
 
-  private onMouseCancel = (event: MouseEvent) => {
+  private onMouseCancel = (event: MouseEvent): void => {
     event.preventDefault()
 
     if (this._selected) {
@@ -138,7 +138,7 @@ class DragControls extends EventDispatcher {
     this._domElement.style.cursor = this._hovered ? 'pointer' : 'auto'
   }
 
-  private onPointerMove = (event: PointerEvent) => {
+  private onPointerMove = (event: PointerEvent): void => {
     event.preventDefault()
 
     switch (event.pointerType) {
@@ -151,7 +151,7 @@ class DragControls extends EventDispatcher {
     }
   }
 
-  private onPointerDown = (event: PointerEvent) => {
+  private onPointerDown = (event: PointerEvent): void => {
     event.preventDefault()
 
     switch (event.pointerType) {
@@ -164,7 +164,7 @@ class DragControls extends EventDispatcher {
     }
   }
 
-  private onPointerCancel = (event: PointerEvent) => {
+  private onPointerCancel = (event: PointerEvent): void => {
     event.preventDefault()
 
     switch (event.pointerType) {
@@ -177,7 +177,7 @@ class DragControls extends EventDispatcher {
     }
   }
 
-  private onTouchMove = (event: TouchEvent) => {
+  private onTouchMove = (event: TouchEvent): void => {
     event.preventDefault()
     const newEvent = event.changedTouches[0]
 
@@ -199,7 +199,7 @@ class DragControls extends EventDispatcher {
     }
   }
 
-  private onTouchStart = (event: TouchEvent) => {
+  private onTouchStart = (event: TouchEvent): void => {
     event.preventDefault()
     const newEvent = event.changedTouches[0]
 
@@ -232,7 +232,7 @@ class DragControls extends EventDispatcher {
     }
   }
 
-  private onTouchEnd = (event: TouchEvent) => {
+  private onTouchEnd = (event: TouchEvent): void => {
     event.preventDefault()
 
     if (this._selected) {
diff --git a/src/controls/FirstPersonControls.ts b/src/controls/FirstPersonControls.ts
index 8e520db7..ecd0e79d 100644
--- a/src/controls/FirstPersonControls.ts
+++ b/src/controls/FirstPersonControls.ts
@@ -77,7 +77,7 @@ class FirstPersonControls extends EventDispatcher {
     window.addEventListener('keyup', this.onKeyUp)
   }
 
-  dispose = () => {
+  dispose = (): void => {
     this.domElement.removeEventListener('contextmenu', this.contextmenu)
     ;(this.domElement as HTMLElement).removeEventListener('mousedown', this.onMouseDown)
     ;(this.domElement as HTMLElement).removeEventListener('mousemove', this.onMouseMove)
@@ -87,7 +87,7 @@ class FirstPersonControls extends EventDispatcher {
     window.removeEventListener('keyup', this.onKeyUp)
   }
 
-  handleResize = () => {
+  handleResize = (): void => {
     if (this.domElement instanceof Document) {
       this.viewHalfX = window.innerWidth / 2
       this.viewHalfY = window.innerHeight / 2
@@ -97,7 +97,7 @@ class FirstPersonControls extends EventDispatcher {
     }
   }
 
-  private onMouseDown = (event: MouseEvent) => {
+  private onMouseDown = (event: MouseEvent): void => {
     if (this.domElement instanceof HTMLElement) {
       this.domElement.focus()
     }
@@ -118,7 +118,7 @@ class FirstPersonControls extends EventDispatcher {
     this.mouseDragOn = true
   }
 
-  private onMouseUp = (event: MouseEvent) => {
+  private onMouseUp = (event: MouseEvent): void => {
     event.preventDefault()
 
     if (this.activeLook) {
@@ -135,7 +135,7 @@ class FirstPersonControls extends EventDispatcher {
     this.mouseDragOn = false
   }
 
-  private onMouseMove = (event: MouseEvent) => {
+  private onMouseMove = (event: MouseEvent): void => {
     if (this.domElement instanceof Document) {
       this.mouseX = event.pageX - this.viewHalfX
       this.mouseY = event.pageY - this.viewHalfY
@@ -145,7 +145,7 @@ class FirstPersonControls extends EventDispatcher {
     }
   }
 
-  private onKeyDown = (event: KeyboardEvent) => {
+  private onKeyDown = (event: KeyboardEvent): void => {
     //event.preventDefault();
 
     switch (event.code) {
@@ -178,7 +178,7 @@ class FirstPersonControls extends EventDispatcher {
     }
   }
 
-  private onKeyUp = (event: KeyboardEvent) => {
+  private onKeyUp = (event: KeyboardEvent): void => {
     switch (event.code) {
       case 'ArrowUp':
       case 'KeyW':
@@ -209,7 +209,7 @@ class FirstPersonControls extends EventDispatcher {
     }
   }
 
-  lookAt = (x: Vector3 | number, y?: number, z?: number) => {
+  lookAt = (x: Vector3 | number, y?: number, z?: number): this => {
     if (x instanceof Vector3) {
       this.target.copy(x)
     } else if (y && z) {
@@ -224,7 +224,8 @@ class FirstPersonControls extends EventDispatcher {
   }
 
   private targetPosition = new Vector3()
-  update = (delta: number) => {
+
+  update = (delta: number): void => {
     if (this.enabled === false) return
 
     if (this.heightSpeed) {
@@ -280,9 +281,9 @@ class FirstPersonControls extends EventDispatcher {
     this.object.lookAt(this.targetPosition)
   }
 
-  private contextmenu = (event: Event) => event.preventDefault()
+  private contextmenu = (event: Event): void => event.preventDefault()
 
-  private setOrientation = (controls: FirstPersonControls) => {
+  private setOrientation = (controls: FirstPersonControls): void => {
     const quaternion = controls.object.quaternion
 
     this.lookDirection.set(0, 0, -1).applyQuaternion(quaternion)
diff --git a/src/controls/FlyControls.ts b/src/controls/FlyControls.ts
index 0844a702..e256f4b4 100644
--- a/src/controls/FlyControls.ts
+++ b/src/controls/FlyControls.ts
@@ -1,6 +1,6 @@
 import { Camera, EventDispatcher, Quaternion, Vector3 } from 'three'
 
-function contextmenu(event: Event) {
+function contextmenu(event: Event): void {
   event.preventDefault()
 }
 
@@ -56,10 +56,9 @@ class FlyControls extends EventDispatcher {
     }
 
     this.domElement.addEventListener('contextmenu', contextmenu)
-
-    this.domElement.addEventListener('mousemove', this.mousemove as any)
-    this.domElement.addEventListener('mousedown', this.mousedown as any)
-    this.domElement.addEventListener('mouseup', this.mouseup as any)
+    ;(this.domElement as HTMLElement).addEventListener('mousemove', this.mousemove)
+    ;(this.domElement as HTMLElement).addEventListener('mousedown', this.mousedown)
+    ;(this.domElement as HTMLElement).addEventListener('mouseup', this.mouseup)
 
     window.addEventListener('keydown', this.keydown)
     window.addEventListener('keyup', this.keyup)
@@ -68,7 +67,7 @@ class FlyControls extends EventDispatcher {
     this.updateRotationVector()
   }
 
-  private keydown = (event: KeyboardEvent) => {
+  private keydown = (event: KeyboardEvent): void => {
     if (event.altKey) {
       return
     }
@@ -128,7 +127,7 @@ class FlyControls extends EventDispatcher {
     this.updateRotationVector()
   }
 
-  private keyup = (event: KeyboardEvent) => {
+  private keyup = (event: KeyboardEvent): void => {
     switch (event.code) {
       case 'ShiftLeft':
       case 'ShiftRight':
@@ -182,7 +181,7 @@ class FlyControls extends EventDispatcher {
     this.updateRotationVector()
   }
 
-  private mousedown = (event: MouseEvent) => {
+  private mousedown = (event: MouseEvent): void => {
     if (this.domElement !== document && !(this.domElement instanceof Document)) {
       this.domElement.focus()
     }
@@ -205,7 +204,7 @@ class FlyControls extends EventDispatcher {
     }
   }
 
-  private mousemove = (event: MouseEvent) => {
+  private mousemove = (event: MouseEvent): void => {
     if (!this.dragToLook || this.mouseStatus > 0) {
       const container = this.getContainerDimensions()
       const halfWidth = container.size[0] / 2
@@ -218,7 +217,7 @@ class FlyControls extends EventDispatcher {
     }
   }
 
-  private mouseup = (event: MouseEvent) => {
+  private mouseup = (event: MouseEvent): void => {
     event.preventDefault()
 
     if (this.dragToLook) {
@@ -244,7 +243,7 @@ class FlyControls extends EventDispatcher {
   private lastQuaternion = new Quaternion()
   private lastPosition = new Vector3()
 
-  public update = (delta: number) => {
+  public update = (delta: number): void => {
     const moveMult = delta * this.movementSpeed
     const rotMult = delta * this.rollSpeed
 
@@ -267,7 +266,7 @@ class FlyControls extends EventDispatcher {
     }
   }
 
-  private updateMovementVector = () => {
+  private updateMovementVector = (): void => {
     const forward = this.moveState.forward || (this.autoForward && !this.moveState.back) ? 1 : 0
 
     this.moveVector.x = -this.moveState.left + this.moveState.right
@@ -275,13 +274,16 @@ class FlyControls extends EventDispatcher {
     this.moveVector.z = -forward + this.moveState.back
   }
 
-  private updateRotationVector = () => {
+  private updateRotationVector = (): void => {
     this.rotationVector.x = -this.moveState.pitchDown + this.moveState.pitchUp
     this.rotationVector.y = -this.moveState.yawRight + this.moveState.yawLeft
     this.rotationVector.z = -this.moveState.rollRight + this.moveState.rollLeft
   }
 
-  private getContainerDimensions = () => {
+  private getContainerDimensions = (): {
+    size: number[]
+    offset: number[]
+  } => {
     if (this.domElement != document && !(this.domElement instanceof Document)) {
       return {
         size: [this.domElement.offsetWidth, this.domElement.offsetHeight],
@@ -295,11 +297,11 @@ class FlyControls extends EventDispatcher {
     }
   }
 
-  public dispose = () => {
+  public dispose = (): void => {
     this.domElement.removeEventListener('contextmenu', contextmenu)
-    this.domElement.removeEventListener('mousemove', this.mousemove as any)
-    this.domElement.removeEventListener('mousedown', this.mousedown as any)
-    this.domElement.removeEventListener('mouseup', this.mouseup as any)
+    ;(this.domElement as HTMLElement).removeEventListener('mousemove', this.mousemove)
+    ;(this.domElement as HTMLElement).removeEventListener('mousedown', this.mousedown)
+    ;(this.domElement as HTMLElement).removeEventListener('mouseup', this.mouseup)
 
     window.removeEventListener('keydown', this.keydown)
     window.removeEventListener('keyup', this.keyup)
diff --git a/src/controls/OrbitControls.ts b/src/controls/OrbitControls.ts
index b1ee5eab..10260dd4 100644
--- a/src/controls/OrbitControls.ts
+++ b/src/controls/OrbitControls.ts
@@ -1,3 +1,4 @@
+/* eslint-disable */
 import {
   Camera,
   EventDispatcher,
@@ -78,12 +79,10 @@ class OrbitControls extends EventDispatcher {
 
   getPolarAngle: () => number
   getAzimuthalAngle: () => number
-  // eslint-disable-next-line no-unused-vars
-  listenToKeyEvents: (domElement: any) => void
+  listenToKeyEvents: (domElement: HTMLElement) => void
   saveState: () => void
   reset: () => void
   update: () => void
-  // eslint-disable-next-line no-unused-vars
   connect: (domElement: HTMLElement) => void
   dispose: () => void
 
@@ -101,22 +100,22 @@ class OrbitControls extends EventDispatcher {
     // public methods
     //
 
-    this.getPolarAngle = () => spherical.phi
+    this.getPolarAngle = (): number => spherical.phi
 
-    this.getAzimuthalAngle = () => spherical.theta
+    this.getAzimuthalAngle = (): number => spherical.theta
 
-    this.listenToKeyEvents = (domElement) => {
+    this.listenToKeyEvents = (domElement: HTMLElement): void => {
       domElement.addEventListener('keydown', onKeyDown)
       this._domElementKeyEvents = domElement
     }
 
-    this.saveState = () => {
+    this.saveState = (): void => {
       scope.target0.copy(scope.target)
       scope.position0.copy(scope.object.position)
       scope.zoom0 = scope.object instanceof PerspectiveCamera ? scope.object.zoom : 1
     }
 
-    this.reset = () => {
+    this.reset = (): void => {
       scope.target.copy(scope.target0)
       scope.object.position.copy(scope.position0)
       if (scope.object instanceof PerspectiveCamera) {
@@ -132,7 +131,7 @@ class OrbitControls extends EventDispatcher {
     }
 
     // this method is exposed, but perhaps it would be better if we can make it private...
-    this.update = (() => {
+    this.update = ((): (() => void) => {
       const offset = new Vector3()
 
       // so camera.up is the orbit axis
@@ -144,7 +143,7 @@ class OrbitControls extends EventDispatcher {
 
       const twoPI = 2 * Math.PI
 
-      return function update() {
+      return function update(): boolean {
         const position = scope.object.position
 
         offset.copy(position).sub(scope.target)
@@ -248,7 +247,7 @@ class OrbitControls extends EventDispatcher {
     })()
 
     // https://github.com/mrdoob/three.js/issues/20575
-    this.connect = (domElement: HTMLElement) => {
+    this.connect = (domElement: HTMLElement): void => {
       if ((domElement as any) === document) {
         console.error(
           'THREE.OrbitControls: "document" should not be used as the target "domElement". Please use "renderer.domElement" instead.',
@@ -263,7 +262,7 @@ class OrbitControls extends EventDispatcher {
       scope.domElement.addEventListener('touchmove', onTouchMove)
     }
 
-    this.dispose = () => {
+    this.dispose = (): void => {
       scope.domElement?.removeEventListener('contextmenu', onContextMenu)
       scope.domElement?.removeEventListener('pointerdown', onPointerDown)
       scope.domElement?.removeEventListener('wheel', onMouseWheel)
@@ -323,19 +322,19 @@ class OrbitControls extends EventDispatcher {
     const dollyEnd = new Vector2()
     const dollyDelta = new Vector2()
 
-    function getAutoRotationAngle() {
+    function getAutoRotationAngle(): number {
       return ((2 * Math.PI) / 60 / 60) * scope.autoRotateSpeed
     }
 
-    function getZoomScale() {
+    function getZoomScale(): number {
       return Math.pow(0.95, scope.zoomSpeed)
     }
 
-    function rotateLeft(angle: number) {
+    function rotateLeft(angle: number): void {
       sphericalDelta.theta -= angle
     }
 
-    function rotateUp(angle: number) {
+    function rotateUp(angle: number): void {
       sphericalDelta.phi -= angle
     }
 
diff --git a/src/controls/PointerLockControls.ts b/src/controls/PointerLockControls.ts
index 0ee45c4a..b2d55e2f 100644
--- a/src/controls/PointerLockControls.ts
+++ b/src/controls/PointerLockControls.ts
@@ -35,7 +35,7 @@ class PointerLockControls extends EventDispatcher {
     this.connect()
   }
 
-  private onMouseMove = (event: MouseEvent) => {
+  private onMouseMove = (event: MouseEvent): void => {
     if (this.isLocked === false) return
 
     const movementX = event.movementX || (event as any).mozMovementX || (event as any).webkitMovementX || 0
@@ -53,7 +53,7 @@ class PointerLockControls extends EventDispatcher {
     this.dispatchEvent(this.changeEvent)
   }
 
-  private onPointerlockChange = () => {
+  private onPointerlockChange = (): void => {
     if (this.domElement.ownerDocument.pointerLockElement === this.domElement) {
       this.dispatchEvent(this.lockEvent)
 
@@ -65,34 +65,34 @@ class PointerLockControls extends EventDispatcher {
     }
   }
 
-  private onPointerlockError = () => {
+  private onPointerlockError = (): void => {
     console.error('THREE.PointerLockControls: Unable to use Pointer Lock API')
   }
 
-  connect = () => {
+  connect = (): void => {
     this.domElement.ownerDocument.addEventListener('mousemove', this.onMouseMove)
     this.domElement.ownerDocument.addEventListener('pointerlockchange', this.onPointerlockChange)
     this.domElement.ownerDocument.addEventListener('pointerlockerror', this.onPointerlockError)
   }
 
-  disconnect = () => {
+  disconnect = (): void => {
     this.domElement.ownerDocument.removeEventListener('mousemove', this.onMouseMove)
     this.domElement.ownerDocument.removeEventListener('pointerlockchange', this.onPointerlockChange)
     this.domElement.ownerDocument.removeEventListener('pointerlockerror', this.onPointerlockError)
   }
 
-  dispose = () => {
+  dispose = (): void => {
     this.disconnect()
   }
 
-  private getObject = () =>
+  private getObject = (): Camera =>
     // retaining this method for backward compatibility
     this.camera
 
   private direction = new Vector3(0, 0, -1)
-  getDirection = (v: Vector3) => v.copy(this.direction).applyQuaternion(this.camera.quaternion)
+  getDirection = (v: Vector3): Vector3 => v.copy(this.direction).applyQuaternion(this.camera.quaternion)
 
-  moveForward = (distance: number) => {
+  moveForward = (distance: number): void => {
     // move forward parallel to the xz-plane
     // assumes this.camera.up is y-up
 
@@ -103,17 +103,17 @@ class PointerLockControls extends EventDispatcher {
     this.camera.position.addScaledVector(this.vec, distance)
   }
 
-  moveRight = (distance: number) => {
+  moveRight = (distance: number): void => {
     this.vec.setFromMatrixColumn(this.camera.matrix, 0)
 
     this.camera.position.addScaledVector(this.vec, distance)
   }
 
-  lock = () => {
+  lock = (): void => {
     this.domElement.requestPointerLock()
   }
 
-  unlock = () => {
+  unlock = (): void => {
     this.domElement.ownerDocument.exitPointerLock()
   }
 }
diff --git a/src/controls/TrackballControls.ts b/src/controls/TrackballControls.ts
index 245da98d..f1b26b49 100644
--- a/src/controls/TrackballControls.ts
+++ b/src/controls/TrackballControls.ts
@@ -114,7 +114,7 @@ class TrackballControls extends EventDispatcher {
 
   private onScreenVector = new Vector2()
 
-  private getMouseOnScreen = (pageX: number, pageY: number) => {
+  private getMouseOnScreen = (pageX: number, pageY: number): Vector2 => {
     this.onScreenVector.set(
       (pageX - this.screen.left) / this.screen.width,
       (pageY - this.screen.top) / this.screen.height,
@@ -125,7 +125,7 @@ class TrackballControls extends EventDispatcher {
 
   private onCircleVector = new Vector2()
 
-  private getMouseOnCircle = (pageX: number, pageY: number) => {
+  private getMouseOnCircle = (pageX: number, pageY: number): Vector2 => {
     this.onCircleVector.set(
       (pageX - this.screen.width * 0.5 - this.screen.left) / (this.screen.width * 0.5),
       (this.screen.height + 2 * (this.screen.top - pageY)) / this.screen.width, // screen.width intentional
@@ -142,7 +142,7 @@ class TrackballControls extends EventDispatcher {
   private moveDirection = new Vector3()
   private angle: number = 0
 
-  private rotateCamera = () => {
+  private rotateCamera = (): void => {
     this.moveDirection.set(this._moveCurr.x - this._movePrev.x, this._moveCurr.y - this._movePrev.y, 0)
     this.angle = this.moveDirection.length()
 
@@ -179,7 +179,7 @@ class TrackballControls extends EventDispatcher {
     this._movePrev.copy(this._moveCurr)
   }
 
-  private zoomCamera = () => {
+  private zoomCamera = (): void => {
     let factor
 
     if (this._state === this.STATE.TOUCH_ZOOM_PAN) {
@@ -220,7 +220,7 @@ class TrackballControls extends EventDispatcher {
   private objectUp = new Vector3()
   private pan = new Vector3()
 
-  private panCamera = () => {
+  private panCamera = (): void => {
     this.mouseChange.copy(this._panEnd).sub(this._panStart)
 
     if (this.mouseChange.lengthSq()) {
@@ -251,7 +251,7 @@ class TrackballControls extends EventDispatcher {
     }
   }
 
-  private checkDistances = () => {
+  private checkDistances = (): void => {
     if (!this.noZoom || !this.noPan) {
       if (this._eye.lengthSq() > this.maxDistance * this.maxDistance) {
         this.object.position.addVectors(this.target, this._eye.setLength(this.maxDistance))
@@ -265,7 +265,7 @@ class TrackballControls extends EventDispatcher {
     }
   }
 
-  private handleResize = () => {
+  private handleResize = (): void => {
     const box = this.domElement.getBoundingClientRect()
     // adjustments come from similar code in the jquery offset() function
     const d = this.domElement.ownerDocument.documentElement
@@ -275,7 +275,7 @@ class TrackballControls extends EventDispatcher {
     this.screen.height = box.height
   }
 
-  public update = () => {
+  public update = (): void => {
     this._eye.subVectors(this.object.position, this.target)
 
     if (!this.noRotate) {
@@ -316,7 +316,7 @@ class TrackballControls extends EventDispatcher {
     }
   }
 
-  public reset = () => {
+  public reset = (): void => {
     this._state = this.STATE.NONE
     this._keyState = this.STATE.NONE
 
@@ -337,7 +337,7 @@ class TrackballControls extends EventDispatcher {
     this.lastZoom = this.object.zoom
   }
 
-  private keydown = (event: KeyboardEvent) => {
+  private keydown = (event: KeyboardEvent): void => {
     if (this.enabled === false) return
 
     window.removeEventListener('keydown', this.keydown)
@@ -353,7 +353,7 @@ class TrackballControls extends EventDispatcher {
     }
   }
 
-  private onPointerDown = (event: PointerEvent) => {
+  private onPointerDown = (event: PointerEvent): void => {
     if (this.enabled === false) return
 
     switch (event.pointerType) {
@@ -366,7 +366,7 @@ class TrackballControls extends EventDispatcher {
     }
   }
 
-  private onPointerMove = (event: PointerEvent) => {
+  private onPointerMove = (event: PointerEvent): void => {
     if (this.enabled === false) return
 
     switch (event.pointerType) {
@@ -379,7 +379,7 @@ class TrackballControls extends EventDispatcher {
     }
   }
 
-  private onPointerUp = (event: PointerEvent) => {
+  private onPointerUp = (event: PointerEvent): void => {
     if (this.enabled === false) return
 
     switch (event.pointerType) {
@@ -392,7 +392,7 @@ class TrackballControls extends EventDispatcher {
     }
   }
 
-  private keyup = () => {
+  private keyup = (): void => {
     if (this.enabled === false) return
 
     this._keyState = this.STATE.NONE
@@ -400,7 +400,7 @@ class TrackballControls extends EventDispatcher {
     window.addEventListener('keydown', this.keydown)
   }
 
-  private onMouseDown = (event: MouseEvent) => {
+  private onMouseDown = (event: MouseEvent): void => {
     event.preventDefault()
 
     if (this._state === this.STATE.NONE) {
@@ -441,7 +441,7 @@ class TrackballControls extends EventDispatcher {
     this.dispatchEvent(this.startEvent)
   }
 
-  private onMouseMove = (event: MouseEvent) => {
+  private onMouseMove = (event: MouseEvent): void => {
     if (this.enabled === false) return
 
     event.preventDefault()
@@ -458,7 +458,7 @@ class TrackballControls extends EventDispatcher {
     }
   }
 
-  private onMouseUp = (event: MouseEvent) => {
+  private onMouseUp = (event: MouseEvent): void => {
     if (this.enabled === false) return
 
     event.preventDefault()
@@ -471,7 +471,7 @@ class TrackballControls extends EventDispatcher {
     this.dispatchEvent(this.endEvent)
   }
 
-  private mousewheel = (event: WheelEvent) => {
+  private mousewheel = (event: WheelEvent): void => {
     if (this.enabled === false) return
 
     if (this.noZoom === true) return
@@ -499,7 +499,7 @@ class TrackballControls extends EventDispatcher {
     this.dispatchEvent(this.endEvent)
   }
 
-  private touchstart = (event: TouchEvent) => {
+  private touchstart = (event: TouchEvent): void => {
     if (this.enabled === false) return
 
     event.preventDefault()
@@ -528,7 +528,7 @@ class TrackballControls extends EventDispatcher {
     this.dispatchEvent(this.startEvent)
   }
 
-  private touchmove = (event: TouchEvent) => {
+  private touchmove = (event: TouchEvent): void => {
     if (this.enabled === false) return
 
     event.preventDefault()
@@ -552,7 +552,7 @@ class TrackballControls extends EventDispatcher {
     }
   }
 
-  private touchend = (event: TouchEvent) => {
+  private touchend = (event: TouchEvent): void => {
     if (this.enabled === false) return
 
     switch (event.touches.length) {
@@ -570,13 +570,13 @@ class TrackballControls extends EventDispatcher {
     this.dispatchEvent(this.endEvent)
   }
 
-  private contextmenu = (event: MouseEvent) => {
+  private contextmenu = (event: MouseEvent): void => {
     if (this.enabled === false) return
 
     event.preventDefault()
   }
 
-  public dispose = () => {
+  public dispose = (): void => {
     this.domElement.removeEventListener('contextmenu', this.contextmenu)
 
     this.domElement.removeEventListener('pointerdown', this.onPointerDown)
diff --git a/src/controls/TransformControls.ts b/src/controls/TransformControls.ts
index b5f4d914..b34de91f 100644
--- a/src/controls/TransformControls.ts
+++ b/src/controls/TransformControls.ts
@@ -20,6 +20,7 @@ import {
   Quaternion,
   Raycaster,
   SphereGeometry,
+  Intersection,
   TorusGeometry,
   Vector3,
 } from 'three'
@@ -151,7 +152,7 @@ class TransformControls extends Object3D {
     }
 
     // Defined getter, setter and store for a property
-    function defineProperty<TValue>(propName: string, defaultValue: TValue) {
+    function defineProperty<TValue>(propName: string, defaultValue: TValue): void {
       Object.defineProperty(this, propName, {
         get: function () {
           return this[propName]
@@ -174,7 +175,11 @@ class TransformControls extends Object3D {
     }
   }
 
-  private intersectObjectWithRay = (object: Object3D, raycaster: Raycaster, includeInvisible?: boolean) => {
+  private intersectObjectWithRay = (
+    object: Object3D,
+    raycaster: Raycaster,
+    includeInvisible?: boolean,
+  ): false | Intersection => {
     const allIntersections = raycaster.intersectObject(object, true)
 
     for (let i = 0; i < allIntersections.length; i++) {
@@ -203,7 +208,7 @@ class TransformControls extends Object3D {
     return this
   }
 
-  public updateMatrixWorld = () => {
+  public updateMatrixWorld = (): void => {
     if (this._object !== undefined) {
       this._object.updateMatrixWorld()
 
@@ -227,7 +232,7 @@ class TransformControls extends Object3D {
     Object3D.prototype.updateMatrixWorld.call(this)
   }
 
-  private pointerHover = (pointer: TransformControlsPointerObject) => {
+  private pointerHover = (pointer: TransformControlsPointerObject): void => {
     if (this._object === undefined || this._dragging === true) return
 
     this.raycaster.setFromCamera(pointer, this._camera)
@@ -241,7 +246,7 @@ class TransformControls extends Object3D {
     }
   }
 
-  private pointerDown = (pointer: TransformControlsPointerObject) => {
+  private pointerDown = (pointer: TransformControlsPointerObject): void => {
     if (this._object === undefined || this._dragging === true || pointer.button !== 0) return
 
     if (this._axis !== null) {
@@ -287,7 +292,7 @@ class TransformControls extends Object3D {
     }
   }
 
-  private pointerMove = (pointer: TransformControlsPointerObject) => {
+  private pointerMove = (pointer: TransformControlsPointerObject): void => {
     const axis = this._axis
     const mode = this._mode
     const object = this._object
@@ -472,7 +477,7 @@ class TransformControls extends Object3D {
     this.dispatchEvent(this.objectChangeEvent)
   }
 
-  private pointerUp = (pointer: TransformControlsPointerObject) => {
+  private pointerUp = (pointer: TransformControlsPointerObject): void => {
     if (pointer.button !== 0) return
 
     if (this._dragging && this._axis !== null) {
@@ -506,7 +511,7 @@ class TransformControls extends Object3D {
     }
   }
 
-  private onPointerHover = (event: Event) => {
+  private onPointerHover = (event: Event): void => {
     if (!this._enabled) return
 
     switch ((event as PointerEvent).pointerType) {
@@ -517,7 +522,7 @@ class TransformControls extends Object3D {
     }
   }
 
-  private onPointerDown = (event: Event) => {
+  private onPointerDown = (event: Event): void => {
     if (!this._enabled) return
     ;(this.domElement as HTMLElement).style.touchAction = 'none' // disable touch scroll
     this.domElement.ownerDocument?.addEventListener('pointermove', this.onPointerMove)
@@ -526,13 +531,13 @@ class TransformControls extends Object3D {
     this.pointerDown(this.getPointer(event))
   }
 
-  private onPointerMove = (event: Event) => {
+  private onPointerMove = (event: Event): void => {
     if (!this._enabled) return
 
     this.pointerMove(this.getPointer(event))
   }
 
-  private onPointerUp = (event: Event) => {
+  private onPointerUp = (event: Event): void => {
     if (!this._enabled) return
     ;(this.domElement as HTMLElement).style.touchAction = ''
     this.domElement.ownerDocument?.removeEventListener('pointermove', this.onPointerMove)
@@ -540,29 +545,29 @@ class TransformControls extends Object3D {
     this.pointerUp(this.getPointer(event))
   }
 
-  getMode = () => this._mode
+  getMode = (): TransformControls['_mode'] => this._mode
 
-  setMode = (mode: 'translate' | 'rotate' | 'scale') => {
+  setMode = (mode: TransformControls['_mode']): void => {
     this._mode = mode
   }
 
-  setTranslationSnap = (translationSnap: number) => {
+  setTranslationSnap = (translationSnap: number): void => {
     this._translationSnap = translationSnap
   }
 
-  setRotationSnap = (rotationSnap: number) => {
+  setRotationSnap = (rotationSnap: number): void => {
     this._rotationSnap = rotationSnap
   }
 
-  setScaleSnap = (scaleSnap: number) => {
+  setScaleSnap = (scaleSnap: number): void => {
     this._scaleSnap = scaleSnap
   }
 
-  setSize = (size: number) => {
+  setSize = (size: number): void => {
     this._size = size
   }
 
-  setSpace = (space: string) => {
+  setSpace = (space: string): void => {
     this._space = space
   }
 
@@ -572,7 +577,7 @@ class TransformControls extends Object3D {
     )
   }
 
-  public dispose = () => {
+  public dispose = (): void => {
     this.domElement.removeEventListener('pointerdown', this.onPointerDown)
     this.domElement.removeEventListener('pointermove', this.onPointerHover)
     this.domElement.ownerDocument?.removeEventListener('pointermove', this.onPointerMove)
@@ -728,7 +733,7 @@ class TransformControlsGizmo extends Object3D {
     const lineGeometry = new BufferGeometry()
     lineGeometry.setAttribute('position', new Float32BufferAttribute([0, 0, 0, 1, 0, 0], 3))
 
-    const CircleGeometry = (radius: number, arc: number) => {
+    const CircleGeometry = (radius: number, arc: number): BufferGeometry => {
       const geometry = new BufferGeometry()
       const vertices = []
 
@@ -743,7 +748,7 @@ class TransformControlsGizmo extends Object3D {
 
     // Special geometry for transform helper. If scaled with position vector it spans from [0,0,0] to position
 
-    const TranslateHelperGeometry = () => {
+    const TranslateHelperGeometry = (): BufferGeometry => {
       const geometry = new BufferGeometry()
 
       geometry.setAttribute('position', new Float32BufferAttribute([0, 0, 0, 1, 1, 1], 3))
@@ -918,7 +923,7 @@ class TransformControlsGizmo extends Object3D {
 
     // Creates an Object3D with gizmos described in custom hierarchy definition.
     // this is nearly impossible to Type so i'm leaving it
-    const setupGizmo = (gizmoMap: any) => {
+    const setupGizmo = (gizmoMap: any): Object3D => {
       const gizmo = new Object3D()
 
       for (let name in gizmoMap) {
@@ -986,7 +991,7 @@ class TransformControlsGizmo extends Object3D {
   }
 
   // updateMatrixWorld will update transformations and appearance of individual handles
-  public updateMatrixWorld = () => {
+  public updateMatrixWorld = (): void => {
     let space = this._space
 
     if (this._mode === 'scale') space = 'local' // scale always oriented to local rotation
@@ -1318,7 +1323,7 @@ class TransformControlsPlane extends Mesh<PlaneGeometry, MeshBasicMaterial> {
   private _mode: 'translate' | 'rotate' | 'scale' = 'translate'
   private _space = 'world'
 
-  updateMatrixWorld = () => {
+  updateMatrixWorld = (): void => {
     let space = this._space
 
     this.position.copy(this._worldPosition)
diff --git a/src/controls/experimental/CameraControls.ts b/src/controls/experimental/CameraControls.ts
index a20d454d..bdeb0bcb 100644
--- a/src/controls/experimental/CameraControls.ts
+++ b/src/controls/experimental/CameraControls.ts
@@ -1,3 +1,4 @@
+/* eslint-disable no-unused-vars */
 import {
   EventDispatcher,
   MOUSE,
@@ -11,11 +12,11 @@ import {
   Vector3,
 } from 'three'
 
-type CHANGE_EVENT = {
+export type CHANGE_EVENT = {
   type: 'change' | 'start' | 'end'
 }
 
-enum STATE {
+export enum STATE {
   NONE = -1,
   ROTATE = 0,
   DOLLY = 1,
@@ -212,18 +213,18 @@ class CameraControls extends EventDispatcher {
     this.saveState()
   }
 
-  getPolarAngle = () => this.spherical.phi
+  getPolarAngle = (): number => this.spherical.phi
 
-  getAzimuthalAngle = () => this.spherical.theta
+  getAzimuthalAngle = (): number => this.spherical.theta
 
-  saveState = () => {
+  saveState = (): void => {
     this.target0.copy(this.target)
     this.position0.copy(this.object.position)
     this.quaternion0.copy(this.object.quaternion)
     this.zoom0 = this.object.zoom
   }
 
-  reset = () => {
+  reset = (): void => {
     this.target.copy(this.target0)
     this.object.position.copy(this.position0)
     this.object.quaternion.copy(this.quaternion0)
@@ -237,7 +238,7 @@ class CameraControls extends EventDispatcher {
     this.state = STATE.NONE
   }
 
-  dispose = () => {
+  dispose = (): void => {
     this.domElement.removeEventListener('contextmenu', this.onContextMenu, false)
     this.domElement.removeEventListener('mousedown', this.onMouseDown, false)
     this.domElement.removeEventListener('wheel', this.onMouseWheel, false)
@@ -254,7 +255,7 @@ class CameraControls extends EventDispatcher {
     //this.dispatchEvent( { type: 'dispose' } ); // should this be added here?
   }
 
-  private update = () => {
+  private update = (): boolean => {
     const position = this.object.position
 
     this.offset.copy(position).sub(this.target)
@@ -373,22 +374,26 @@ class CameraControls extends EventDispatcher {
     return false
   }
 
-  private getAutoRotationAngle = () => ((2 * Math.PI) / 60 / 60) * this.autoRotateSpeed
+  private getAutoRotationAngle = (): number => ((2 * Math.PI) / 60 / 60) * this.autoRotateSpeed
 
-  private getZoomScale = () => Math.pow(0.95, this.zoomSpeed)
+  private getZoomScale = (): number => Math.pow(0.95, this.zoomSpeed)
 
-  private rotateLeft = (angle: number) => (this.sphericalDelta.theta -= angle)
+  private rotateLeft = (angle: number): void => {
+    this.sphericalDelta.theta -= angle
+  }
 
-  private rotateUp = (angle: number) => (this.sphericalDelta.phi -= angle)
+  private rotateUp = (angle: number): void => {
+    this.sphericalDelta.phi -= angle
+  }
 
-  private panLeft = (distance: number, objectMatrix: Matrix4) => {
+  private panLeft = (distance: number, objectMatrix: Matrix4): void => {
     this.v.setFromMatrixColumn(objectMatrix, 0) // get X column of objectMatrix
     this.v.multiplyScalar(-distance)
 
     this.panOffset.add(this.v)
   }
 
-  private panUp = (distance: number, objectMatrix: Matrix4) => {
+  private panUp = (distance: number, objectMatrix: Matrix4): void => {
     if (this.screenSpacePanning === true) {
       this.v.setFromMatrixColumn(objectMatrix, 1)
     } else {
@@ -402,7 +407,7 @@ class CameraControls extends EventDispatcher {
   }
 
   // deltaX and deltaY are in pixels; right and down are positive
-  private pan = (deltaX: number, deltaY: number) => {
+  private pan = (deltaX: number, deltaY: number): void => {
     const element = this.domElement
 
     if (this.object instanceof PerspectiveCamera) {
@@ -434,7 +439,7 @@ class CameraControls extends EventDispatcher {
     }
   }
 
-  private dollyIn = (dollyScale: number) => {
+  private dollyIn = (dollyScale: number): void => {
     // TODO: replace w/.isPerspectiveCamera ?
     if (this.object instanceof PerspectiveCamera) {
       this.scale /= dollyScale
@@ -449,7 +454,7 @@ class CameraControls extends EventDispatcher {
     }
   }
 
-  private dollyOut = (dollyScale: number) => {
+  private dollyOut = (dollyScale: number): void => {
     // TODO: replace w/.isPerspectiveCamera ?
     if (this.object instanceof PerspectiveCamera) {
       this.scale *= dollyScale
@@ -466,20 +471,20 @@ class CameraControls extends EventDispatcher {
 
   // event callbacks - update the object state
 
-  private handleMouseDownRotate = (event: MouseEvent) => {
+  private handleMouseDownRotate = (event: MouseEvent): void => {
     this.rotateStart.set(event.clientX, event.clientY)
   }
 
   // TODO: confirm if worthwhile to return the Vector2 instead of void
-  private handleMouseDownDolly = (event: MouseEvent) => {
+  private handleMouseDownDolly = (event: MouseEvent): void => {
     this.dollyStart.set(event.clientX, event.clientY)
   }
 
-  private handleMouseDownPan = (event: MouseEvent) => {
+  private handleMouseDownPan = (event: MouseEvent): void => {
     this.panStart.set(event.clientX, event.clientY)
   }
 
-  private handleMouseMoveRotate = (event: MouseEvent) => {
+  private handleMouseMoveRotate = (event: MouseEvent): void => {
     this.rotateEnd.set(event.clientX, event.clientY)
 
     this.rotateDelta.subVectors(this.rotateEnd, this.rotateStart).multiplyScalar(this.rotateSpeed)
@@ -495,7 +500,7 @@ class CameraControls extends EventDispatcher {
     this.update()
   }
 
-  private handleMouseMoveDolly = (event: MouseEvent) => {
+  private handleMouseMoveDolly = (event: MouseEvent): void => {
     this.dollyEnd.set(event.clientX, event.clientY)
 
     this.dollyDelta.subVectors(this.dollyEnd, this.dollyStart)
@@ -511,7 +516,7 @@ class CameraControls extends EventDispatcher {
     this.update()
   }
 
-  private handleMouseMovePan = (event: MouseEvent) => {
+  private handleMouseMovePan = (event: MouseEvent): void => {
     this.panEnd.set(event.clientX, event.clientY)
 
     this.panDelta.subVectors(this.panEnd, this.panStart).multiplyScalar(this.panSpeed)
@@ -523,11 +528,11 @@ class CameraControls extends EventDispatcher {
     this.update()
   }
 
-  private handleMouseUp(/*event*/) {
+  private handleMouseUp(/*event*/): void {
     // no-op
   }
 
-  private handleMouseWheel = (event: WheelEvent) => {
+  private handleMouseWheel = (event: WheelEvent): void => {
     if (event.deltaY < 0) {
       this.dollyOut(this.getZoomScale())
     } else if (event.deltaY > 0) {
@@ -537,7 +542,7 @@ class CameraControls extends EventDispatcher {
     this.update()
   }
 
-  private handleKeyDown = (event: KeyboardEvent) => {
+  private handleKeyDown = (event: KeyboardEvent): void => {
     let needsUpdate = false
 
     // TODO: keyCode deprecated?
@@ -571,7 +576,7 @@ class CameraControls extends EventDispatcher {
     }
   }
 
-  private handleTouchStartRotate = (event: TouchEvent) => {
+  private handleTouchStartRotate = (event: TouchEvent): void => {
     if (event.touches.length == 1) {
       this.rotateStart.set(event.touches[0].pageX, event.touches[0].pageY)
     } else {
@@ -582,7 +587,7 @@ class CameraControls extends EventDispatcher {
     }
   }
 
-  private handleTouchStartPan = (event: TouchEvent) => {
+  private handleTouchStartPan = (event: TouchEvent): void => {
     if (event.touches.length == 1) {
       this.panStart.set(event.touches[0].pageX, event.touches[0].pageY)
     } else {
@@ -593,7 +598,7 @@ class CameraControls extends EventDispatcher {
     }
   }
 
-  private handleTouchStartDolly = (event: TouchEvent) => {
+  private handleTouchStartDolly = (event: TouchEvent): void => {
     const dx = event.touches[0].pageX - event.touches[1].pageX
     const dy = event.touches[0].pageY - event.touches[1].pageY
 
@@ -602,19 +607,19 @@ class CameraControls extends EventDispatcher {
     this.dollyStart.set(0, distance)
   }
 
-  private handleTouchStartDollyPan = (event: TouchEvent) => {
+  private handleTouchStartDollyPan = (event: TouchEvent): void => {
     if (this.enableZoom) this.handleTouchStartDolly(event)
 
     if (this.enablePan) this.handleTouchStartPan(event)
   }
 
-  private handleTouchStartDollyRotate = (event: TouchEvent) => {
+  private handleTouchStartDollyRotate = (event: TouchEvent): void => {
     if (this.enableZoom) this.handleTouchStartDolly(event)
 
     if (this.enableRotate) this.handleTouchStartRotate(event)
   }
 
-  private handleTouchMoveRotate = (event: TouchEvent) => {
+  private handleTouchMoveRotate = (event: TouchEvent): void => {
     if (event.touches.length == 1) {
       this.rotateEnd.set(event.touches[0].pageX, event.touches[0].pageY)
     } else {
@@ -635,7 +640,7 @@ class CameraControls extends EventDispatcher {
     this.rotateStart.copy(this.rotateEnd)
   }
 
-  private handleTouchMovePan = (event: TouchEvent) => {
+  private handleTouchMovePan = (event: TouchEvent): void => {
     if (event.touches.length == 1) {
       this.panEnd.set(event.touches[0].pageX, event.touches[0].pageY)
     } else {
@@ -652,7 +657,7 @@ class CameraControls extends EventDispatcher {
     this.panStart.copy(this.panEnd)
   }
 
-  private handleTouchMoveDolly = (event: TouchEvent) => {
+  private handleTouchMoveDolly = (event: TouchEvent): void => {
     const dx = event.touches[0].pageX - event.touches[1].pageX
     const dy = event.touches[0].pageY - event.touches[1].pageY
 
@@ -667,19 +672,19 @@ class CameraControls extends EventDispatcher {
     this.dollyStart.copy(this.dollyEnd)
   }
 
-  private handleTouchMoveDollyPan = (event: TouchEvent) => {
+  private handleTouchMoveDollyPan = (event: TouchEvent): void => {
     if (this.enableZoom) this.handleTouchMoveDolly(event)
 
     if (this.enablePan) this.handleTouchMovePan(event)
   }
 
-  private handleTouchMoveDollyRotate = (event: TouchEvent) => {
+  private handleTouchMoveDollyRotate = (event: TouchEvent): void => {
     if (this.enableZoom) this.handleTouchMoveDolly(event)
 
     if (this.enableRotate) this.handleTouchMoveRotate(event)
   }
 
-  private handleTouchEnd(/*event*/) {
+  private handleTouchEnd(/*event*/): void {
     // no-op
   }
 
@@ -687,7 +692,7 @@ class CameraControls extends EventDispatcher {
   // event handlers - FSM: listen for events and reset state
   //
 
-  private onMouseDown = (event: MouseEvent) => {
+  private onMouseDown = (event: MouseEvent): void => {
     if (this.enabled === false) return
 
     // Prevent the browser from scrolling.
@@ -774,7 +779,7 @@ class CameraControls extends EventDispatcher {
     }
   }
 
-  private onMouseMove = (event: MouseEvent) => {
+  private onMouseMove = (event: MouseEvent): void => {
     if (this.enabled === false) return
 
     event.preventDefault()
@@ -803,7 +808,7 @@ class CameraControls extends EventDispatcher {
     }
   }
 
-  private onMouseUp = (event: MouseEvent) => {
+  private onMouseUp = (): void => {
     if (this.enabled === false) return
 
     // this.handleMouseUp()
@@ -816,7 +821,7 @@ class CameraControls extends EventDispatcher {
     this.state = STATE.NONE
   }
 
-  private onMouseWheel = (event: WheelEvent) => {
+  private onMouseWheel = (event: WheelEvent): void => {
     if (
       this.enabled === false ||
       this.enableZoom === false ||
@@ -834,13 +839,13 @@ class CameraControls extends EventDispatcher {
     this.dispatchEvent(this.endEvent)
   }
 
-  private onKeyDown = (event: KeyboardEvent) => {
+  private onKeyDown = (event: KeyboardEvent): void => {
     if (this.enabled === false || this.enableKeys === false || this.enablePan === false) return
 
     this.handleKeyDown(event)
   }
 
-  private onTouchStart = (event: TouchEvent) => {
+  private onTouchStart = (event: TouchEvent): void => {
     if (this.enabled === false) return
 
     event.preventDefault()
@@ -907,7 +912,7 @@ class CameraControls extends EventDispatcher {
     }
   }
 
-  private onTouchMove = (event: TouchEvent) => {
+  private onTouchMove = (event: TouchEvent): void => {
     if (this.enabled === false) return
 
     event.preventDefault()
@@ -954,7 +959,7 @@ class CameraControls extends EventDispatcher {
     }
   }
 
-  private onTouchEnd = (event: TouchEvent) => {
+  private onTouchEnd = (): void => {
     if (this.enabled === false) return
 
     // this.handleTouchEnd()
@@ -964,7 +969,7 @@ class CameraControls extends EventDispatcher {
     this.state = STATE.NONE
   }
 
-  private onContextMenu = (event: Event) => {
+  private onContextMenu = (event: Event): void => {
     if (this.enabled === false) return
 
     event.preventDefault()
diff --git a/src/lines/LineSegments2.ts b/src/lines/LineSegments2.ts
index cac19c68..65802bac 100644
--- a/src/lines/LineSegments2.ts
+++ b/src/lines/LineSegments2.ts
@@ -26,7 +26,7 @@ class LineSegments2 extends Mesh<LineSegmentsGeometry, LineMaterial> {
   private distStart = new Vector3()
   private distEnd = new Vector3()
 
-  computeLineDistances = () => {
+  computeLineDistances = (): this => {
     const geometry = this.geometry
 
     const instanceStart = geometry.attributes.instanceStart as InterleavedBufferAttribute
@@ -58,7 +58,7 @@ class LineSegments2 extends Mesh<LineSegmentsGeometry, LineMaterial> {
   private line = new Line3()
   private closestPoint = new Vector3()
 
-  raycast = (raycaster: Raycaster, intersects: Array<Intersection & { pointOnLine: Vector3 }>) => {
+  raycast = (raycaster: Raycaster, intersects: Array<Intersection & { pointOnLine: Vector3 }>): void => {
     if (raycaster.camera === null) {
       console.error('LineSegments2: "Raycaster.camera" needs to be set in order to raycast against LineSegments2.')
     }
diff --git a/src/lines/LineSegmentsGeometry.ts b/src/lines/LineSegmentsGeometry.ts
index 8d004612..6cccc4c4 100644
--- a/src/lines/LineSegmentsGeometry.ts
+++ b/src/lines/LineSegmentsGeometry.ts
@@ -133,7 +133,7 @@ class LineSegmentsGeometry extends InstancedBufferGeometry {
 
   private box = new Box3()
 
-  computeBoundingBox = () => {
+  computeBoundingBox = (): void => {
     if (this.boundingBox === null) {
       this.boundingBox = new Box3()
     }
@@ -152,7 +152,7 @@ class LineSegmentsGeometry extends InstancedBufferGeometry {
 
   private vector = new Vector3()
 
-  computeBoundingSphere = () => {
+  computeBoundingSphere = (): void => {
     if (this.boundingSphere === null) {
       this.boundingSphere = new Sphere()
     }
@@ -192,11 +192,11 @@ class LineSegmentsGeometry extends InstancedBufferGeometry {
     }
   }
 
-  toJSON = () => {
+  toJSON = (): void => {
     // todo
   }
 
-  applyMatrix = (matrix: Matrix4) => {
+  applyMatrix = (matrix: Matrix4): this => {
     console.warn('THREE.LineSegmentsGeometry: applyMatrix() has been renamed to applyMatrix4().')
 
     return this.applyMatrix4(matrix)
diff --git a/src/math/SimplexNoise.ts b/src/math/SimplexNoise.ts
index 32f5de8b..5d67343c 100644
--- a/src/math/SimplexNoise.ts
+++ b/src/math/SimplexNoise.ts
@@ -157,11 +157,11 @@ export class SimplexNoise {
     return g[0] * x + g[1] * y + g[2] * z
   }
 
-  dot4 = (g: number[], x: number, y: number, z: number, w: number) => {
+  dot4 = (g: number[], x: number, y: number, z: number, w: number): number => {
     return g[0] * x + g[1] * y + g[2] * z + g[3] * w
   }
 
-  noise = (xin: number, yin: number) => {
+  noise = (xin: number, yin: number): number => {
     let n0
     let n1
     let n2 // Noise contributions from the three corners
diff --git a/src/misc/WebGL.ts b/src/misc/WebGL.ts
index d333156a..07271815 100644
--- a/src/misc/WebGL.ts
+++ b/src/misc/WebGL.ts
@@ -1,5 +1,5 @@
 export const WEBGL = {
-  isWebGLAvailable: function () {
+  isWebGLAvailable: function (): boolean {
     try {
       const canvas = document.createElement('canvas')
       return !!(window.WebGLRenderingContext && (canvas.getContext('webgl') || canvas.getContext('experimental-webgl')))
@@ -8,7 +8,7 @@ export const WEBGL = {
     }
   },
 
-  isWebGL2Available: function () {
+  isWebGL2Available: function (): boolean {
     try {
       const canvas = document.createElement('canvas')
       return !!(window.WebGL2RenderingContext && canvas.getContext('webgl2'))
@@ -17,15 +17,15 @@ export const WEBGL = {
     }
   },
 
-  getWebGLErrorMessage: function () {
+  getWebGLErrorMessage: function (): HTMLDivElement {
     return this.getErrorMessage(1)
   },
 
-  getWebGL2ErrorMessage: function () {
+  getWebGL2ErrorMessage: function (): HTMLDivElement {
     return this.getErrorMessage(2)
   },
 
-  getErrorMessage: function (version: 1 | 2) {
+  getErrorMessage: function (version: 1 | 2): HTMLDivElement {
     const names = {
       1: 'WebGL',
       2: 'WebGL 2',
diff --git a/src/modifiers/CurveModifier.ts b/src/modifiers/CurveModifier.ts
index 7b872308..dfb3a73e 100644
--- a/src/modifiers/CurveModifier.ts
+++ b/src/modifiers/CurveModifier.ts
@@ -116,11 +116,11 @@ export function modifyShader<TMaterial extends Material = Material>(
   material: ModifiedMaterial<TMaterial>,
   uniforms: CurveModifierUniforms,
   numberOfCurves = 1,
-) {
+): void {
   if (material.__ok) return
   material.__ok = true
 
-  material.onBeforeCompile = (shader: Shader & { __modified: boolean }) => {
+  material.onBeforeCompile = (shader: Shader & { __modified: boolean }): void => {
     if (shader.__modified) return
     shader.__modified = true
 
diff --git a/src/modifiers/EdgeSplitModifier.ts b/src/modifiers/EdgeSplitModifier.ts
index 0de0b8e7..be96a038 100644
--- a/src/modifiers/EdgeSplitModifier.ts
+++ b/src/modifiers/EdgeSplitModifier.ts
@@ -95,7 +95,7 @@ class EdgeSplitModifier {
     return result
   }
 
-  private edgeSplit = (indexes: number[], cutOff: number, original: number | null = null) => {
+  private edgeSplit = (indexes: number[], cutOff: number, original: number | null = null): void => {
     if (indexes.length === 0) return
 
     const groupResults: EdgeSplitToGroupsResult[] = []
@@ -124,7 +124,7 @@ class EdgeSplitModifier {
     }
   }
 
-  public modify = (geometry: BufferGeometry, cutOffAngle: number, tryKeepNormals = true) => {
+  public modify = (geometry: BufferGeometry, cutOffAngle: number, tryKeepNormals = true): BufferGeometry => {
     let hadNormals = false
 
     if (geometry.attributes.normal) {
diff --git a/src/modifiers/SimplifyModifier.ts b/src/modifiers/SimplifyModifier.ts
index 73f56c51..6731f791 100644
--- a/src/modifiers/SimplifyModifier.ts
+++ b/src/modifiers/SimplifyModifier.ts
@@ -4,11 +4,11 @@ import * as BufferGeometryUtils from '../utils/BufferGeometryUtils'
 const cb = new Vector3(),
   ab = new Vector3()
 
-function pushIfUnique<TItem>(array: TItem[], object: TItem) {
+function pushIfUnique<TItem>(array: TItem[], object: TItem): void {
   if (array.indexOf(object) === -1) array.push(object)
 }
 
-function removeFromArray<TItem>(array: TItem[], object: TItem) {
+function removeFromArray<TItem>(array: TItem[], object: TItem): void {
   const k = array.indexOf(object)
   if (k > -1) array.splice(k, 1)
 }
@@ -150,7 +150,7 @@ class Triangle {
 class SimplifyModifier {
   constructor() {}
 
-  private computeEdgeCollapseCost = (u: Vertex, v: Vertex) => {
+  private computeEdgeCollapseCost = (u: Vertex, v: Vertex): number => {
     // if we collapse edge uv by moving u to v then how
     // much different will the model change, i.e. the "error".
 
@@ -202,7 +202,7 @@ class SimplifyModifier {
     return amt
   }
 
-  private removeVertex(v: Vertex, vertices: Vertex[]) {
+  private removeVertex(v: Vertex, vertices: Vertex[]): void {
     console.assert(v.faces.length === 0)
 
     while (v.neighbors.length) {
@@ -213,7 +213,7 @@ class SimplifyModifier {
     removeFromArray(vertices, v)
   }
 
-  private computeEdgeCostAtVertex = (v: Vertex) => {
+  private computeEdgeCostAtVertex = (v: Vertex): void => {
     // compute the edge collapse cost for all edges that start
     // from vertex v.  Since we are only interested in reducing
     // the object by selecting the min cost edge at each step, we
@@ -258,7 +258,7 @@ class SimplifyModifier {
     // v.collapseCost = v.minCost;
   }
 
-  private removeFace = (f: Triangle, faces: Triangle[]) => {
+  private removeFace = (f: Triangle, faces: Triangle[]): void => {
     removeFromArray(faces, f)
 
     if (f.v1) removeFromArray(f.v1.faces, f)
@@ -280,7 +280,7 @@ class SimplifyModifier {
     }
   }
 
-  private collapse = (vertices: Vertex[], faces: Triangle[], u: Vertex, v: Vertex) => {
+  private collapse = (vertices: Vertex[], faces: Triangle[], u: Vertex, v: Vertex): void => {
     // u and v are pointers to vertices of an edge
 
     // Collapse the edge uv by moving vertex u onto v
@@ -318,7 +318,7 @@ class SimplifyModifier {
     }
   }
 
-  private minimumCostEdge = (vertices: Vertex[]) => {
+  private minimumCostEdge = (vertices: Vertex[]): Vertex => {
     // O(n * n) approach. TODO optimize this
 
     let least = vertices[0]
@@ -332,7 +332,7 @@ class SimplifyModifier {
     return least
   }
 
-  modify = (geometry: BufferGeometry, count: number) => {
+  modify = (geometry: BufferGeometry, count: number): BufferGeometry => {
     geometry = geometry.clone()
     const attributes = geometry.attributes
 
diff --git a/src/modifiers/TessellateModifier.ts b/src/modifiers/TessellateModifier.ts
index e4f8f4e9..02367d58 100644
--- a/src/modifiers/TessellateModifier.ts
+++ b/src/modifiers/TessellateModifier.ts
@@ -74,7 +74,7 @@ class TessellateModifier {
     let iteration = 0
     let tessellating = true
 
-    function addTriangle(a: number, b: number, c: number) {
+    function addTriangle(a: number, b: number, c: number): void {
       const v1 = vs[a]
       const v2 = vs[b]
       const v3 = vs[c]
diff --git a/src/types/helpers.ts b/src/types/helpers.ts
index 648658ec..aa268e17 100644
--- a/src/types/helpers.ts
+++ b/src/types/helpers.ts
@@ -1 +1 @@
-export const getWithKey = <T, K extends keyof T>(obj: T, key: K) => obj[key]
+export const getWithKey = <T, K extends keyof T>(obj: T, key: K): T[K] => obj[key]
diff --git a/src/utils/BufferGeometryUtils.ts b/src/utils/BufferGeometryUtils.ts
index 35101f46..2efd9c32 100644
--- a/src/utils/BufferGeometryUtils.ts
+++ b/src/utils/BufferGeometryUtils.ts
@@ -598,7 +598,7 @@ export function computeMorphedAttributes(object: Mesh | Line | Points): Computed
     b: number,
     c: number,
     modifiedAttributeArray: Float32Array,
-  ) {
+  ): void {
     _vA.fromBufferAttribute(attribute, a)
     _vB.fromBufferAttribute(attribute, b)
     _vC.fromBufferAttribute(attribute, c)
diff --git a/yarn.lock b/yarn.lock
index 1d85829d..cdd41d46 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2338,13 +2338,13 @@
   dependencies:
     "@types/yargs-parser" "*"
 
-"@typescript-eslint/eslint-plugin@^4.15.2":
-  version "4.15.2"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.15.2.tgz#981b26b4076c62a5a55873fbef3fe98f83360c61"
-  integrity sha512-uiQQeu9tWl3f1+oK0yoAv9lt/KXO24iafxgQTkIYO/kitruILGx3uH+QtIAHqxFV+yIsdnJH+alel9KuE3J15Q==
+"@typescript-eslint/eslint-plugin@^4.18.0":
+  version "4.18.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.18.0.tgz#50fbce93211b5b690895d20ebec6fe8db48af1f6"
+  integrity sha512-Lzkc/2+7EoH7+NjIWLS2lVuKKqbEmJhtXe3rmfA8cyiKnZm3IfLf51irnBcmow8Q/AptVV0XBZmBJKuUJTe6cQ==
   dependencies:
-    "@typescript-eslint/experimental-utils" "4.15.2"
-    "@typescript-eslint/scope-manager" "4.15.2"
+    "@typescript-eslint/experimental-utils" "4.18.0"
+    "@typescript-eslint/scope-manager" "4.18.0"
     debug "^4.1.1"
     functional-red-black-tree "^1.0.1"
     lodash "^4.17.15"
@@ -2352,15 +2352,15 @@
     semver "^7.3.2"
     tsutils "^3.17.1"
 
-"@typescript-eslint/experimental-utils@4.15.2":
-  version "4.15.2"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/experimental-utils/-/experimental-utils-4.15.2.tgz#5efd12355bd5b535e1831282e6cf465b9a71cf36"
-  integrity sha512-Fxoshw8+R5X3/Vmqwsjc8nRO/7iTysRtDqx6rlfLZ7HbT8TZhPeQqbPjTyk2RheH3L8afumecTQnUc9EeXxohQ==
+"@typescript-eslint/experimental-utils@4.18.0":
+  version "4.18.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/experimental-utils/-/experimental-utils-4.18.0.tgz#ed6c955b940334132b17100d2917449b99a91314"
+  integrity sha512-92h723Kblt9JcT2RRY3QS2xefFKar4ZQFVs3GityOKWQYgtajxt/tuXIzL7sVCUlM1hgreiV5gkGYyBpdOwO6A==
   dependencies:
     "@types/json-schema" "^7.0.3"
-    "@typescript-eslint/scope-manager" "4.15.2"
-    "@typescript-eslint/types" "4.15.2"
-    "@typescript-eslint/typescript-estree" "4.15.2"
+    "@typescript-eslint/scope-manager" "4.18.0"
+    "@typescript-eslint/types" "4.18.0"
+    "@typescript-eslint/typescript-estree" "4.18.0"
     eslint-scope "^5.0.0"
     eslint-utils "^2.0.0"
 
@@ -2374,28 +2374,28 @@
     eslint-scope "^5.0.0"
     eslint-utils "^2.0.0"
 
-"@typescript-eslint/parser@^4.15.2":
-  version "4.15.2"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-4.15.2.tgz#c804474321ef76a3955aec03664808f0d6e7872e"
-  integrity sha512-SHeF8xbsC6z2FKXsaTb1tBCf0QZsjJ94H6Bo51Y1aVEZ4XAefaw5ZAilMoDPlGghe+qtq7XdTiDlGfVTOmvA+Q==
+"@typescript-eslint/parser@^4.18.0":
+  version "4.18.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-4.18.0.tgz#a211edb14a69fc5177054bec04c95b185b4dde21"
+  integrity sha512-W3z5S0ZbecwX3PhJEAnq4mnjK5JJXvXUDBYIYGoweCyWyuvAKfGHvzmpUzgB5L4cRBb+cTu9U/ro66dx7dIimA==
   dependencies:
-    "@typescript-eslint/scope-manager" "4.15.2"
-    "@typescript-eslint/types" "4.15.2"
-    "@typescript-eslint/typescript-estree" "4.15.2"
+    "@typescript-eslint/scope-manager" "4.18.0"
+    "@typescript-eslint/types" "4.18.0"
+    "@typescript-eslint/typescript-estree" "4.18.0"
     debug "^4.1.1"
 
-"@typescript-eslint/scope-manager@4.15.2":
-  version "4.15.2"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-4.15.2.tgz#5725bda656995960ae1d004bfd1cd70320f37f4f"
-  integrity sha512-Zm0tf/MSKuX6aeJmuXexgdVyxT9/oJJhaCkijv0DvJVT3ui4zY6XYd6iwIo/8GEZGy43cd7w1rFMiCLHbRzAPQ==
+"@typescript-eslint/scope-manager@4.18.0":
+  version "4.18.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-4.18.0.tgz#d75b55234c35d2ff6ac945758d6d9e53be84a427"
+  integrity sha512-olX4yN6rvHR2eyFOcb6E4vmhDPsfdMyfQ3qR+oQNkAv8emKKlfxTWUXU5Mqxs2Fwe3Pf1BoPvrwZtwngxDzYzQ==
   dependencies:
-    "@typescript-eslint/types" "4.15.2"
-    "@typescript-eslint/visitor-keys" "4.15.2"
+    "@typescript-eslint/types" "4.18.0"
+    "@typescript-eslint/visitor-keys" "4.18.0"
 
-"@typescript-eslint/types@4.15.2":
-  version "4.15.2"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-4.15.2.tgz#04acf3a2dc8001a88985291744241e732ef22c60"
-  integrity sha512-r7lW7HFkAarfUylJ2tKndyO9njwSyoy6cpfDKWPX6/ctZA+QyaYscAHXVAfJqtnY6aaTwDYrOhp+ginlbc7HfQ==
+"@typescript-eslint/types@4.18.0":
+  version "4.18.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-4.18.0.tgz#bebe323f81f2a7e2e320fac9415e60856267584a"
+  integrity sha512-/BRociARpj5E+9yQ7cwCF/SNOWwXJ3qhjurMuK2hIFUbr9vTuDeu476Zpu+ptxY2kSxUHDGLLKy+qGq2sOg37A==
 
 "@typescript-eslint/typescript-estree@2.34.0":
   version "2.34.0"
@@ -2410,25 +2410,25 @@
     semver "^7.3.2"
     tsutils "^3.17.1"
 
-"@typescript-eslint/typescript-estree@4.15.2":
-  version "4.15.2"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-4.15.2.tgz#c2f7a1e94f3428d229d5ecff3ead6581ee9b62fa"
-  integrity sha512-cGR8C2g5SPtHTQvAymEODeqx90pJHadWsgTtx6GbnTWKqsg7yp6Eaya9nFzUd4KrKhxdYTTFBiYeTPQaz/l8bw==
+"@typescript-eslint/typescript-estree@4.18.0":
+  version "4.18.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-4.18.0.tgz#756d3e61da8c16ab99185532c44872f4cd5538cb"
+  integrity sha512-wt4xvF6vvJI7epz+rEqxmoNQ4ZADArGQO9gDU+cM0U5fdVv7N+IAuVoVAoZSOZxzGHBfvE3XQMLdy+scsqFfeg==
   dependencies:
-    "@typescript-eslint/types" "4.15.2"
-    "@typescript-eslint/visitor-keys" "4.15.2"
+    "@typescript-eslint/types" "4.18.0"
+    "@typescript-eslint/visitor-keys" "4.18.0"
     debug "^4.1.1"
     globby "^11.0.1"
     is-glob "^4.0.1"
     semver "^7.3.2"
     tsutils "^3.17.1"
 
-"@typescript-eslint/visitor-keys@4.15.2":
-  version "4.15.2"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-4.15.2.tgz#3d1c7979ce75bf6acf9691109bd0d6b5706192b9"
-  integrity sha512-TME1VgSb7wTwgENN5KVj4Nqg25hP8DisXxNBojM4Nn31rYaNDIocNm5cmjOFfh42n7NVERxWrDFoETO/76ePyg==
+"@typescript-eslint/visitor-keys@4.18.0":
+  version "4.18.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-4.18.0.tgz#4e6fe2a175ee33418318a029610845a81e2ff7b6"
+  integrity sha512-Q9t90JCvfYaN0OfFUgaLqByOfz8yPeTAdotn/XYNm5q9eHax90gzdb+RJ6E9T5s97Kv/UHWKERTmqA0jTKAEHw==
   dependencies:
-    "@typescript-eslint/types" "4.15.2"
+    "@typescript-eslint/types" "4.18.0"
     eslint-visitor-keys "^2.0.0"
 
 "@webassemblyjs/ast@1.9.0":