diff --git a/src/deprecated/deprecated.js b/src/deprecated/deprecated.js
index 2cecc7ac067..e9c3b501598 100644
--- a/src/deprecated/deprecated.js
+++ b/src/deprecated/deprecated.js
@@ -45,6 +45,8 @@ import { AssetRegistry } from '../framework/asset/asset-registry.js';
 import { XrInputSource } from '../framework/xr/xr-input-source.js';
 
 import { ElementInput } from '../framework/input/element-input.js';
+import { Key } from '../platform/input/key.js';
+import { MouseButton } from '../platform/input/mouse-button.js';
 import { MouseEvent } from '../platform/input/mouse-event.js';
 
 import { AppBase } from '../framework/app-base.js';
@@ -771,6 +773,109 @@ export const EVENT_SELECT = 'select';
 export const EVENT_SELECTSTART = 'selectstart';
 export const EVENT_SELECTEND = 'selectend';
 
+export const KEY_BACKSPACE = Key.Backspace;
+export const KEY_TAB = Key.Tab;
+export const KEY_RETURN = Key.Return;
+export const KEY_ENTER = Key.Enter;
+export const KEY_SHIFT = Key.Shift;
+export const KEY_CONTROL = Key.Control;
+export const KEY_ALT = Key.Alt;
+export const KEY_PAUSE = Key.Pause;
+export const KEY_CAPS_LOCK = Key.CapsLock;
+export const KEY_ESCAPE = Key.Escape;
+export const KEY_SPACE = Key.Space;
+export const KEY_PAGE_UP = Key.PageUp;
+export const KEY_PAGE_DOWN = Key.PageDown;
+export const KEY_END = Key.End;
+export const KEY_HOME = Key.Home;
+export const KEY_LEFT = Key.Left;
+export const KEY_UP = Key.Up;
+export const KEY_RIGHT = Key.Right;
+export const KEY_DOWN = Key.Down;
+export const KEY_PRINT_SCREEN = Key.PrintScreen;
+export const KEY_INSERT = Key.Insert;
+export const KEY_DELETE = Key.Delete;
+export const KEY_0 = Key.Key0;
+export const KEY_1 = Key.Key1;
+export const KEY_2 = Key.Key2;
+export const KEY_3 = Key.Key3;
+export const KEY_4 = Key.Key4;
+export const KEY_5 = Key.Key5;
+export const KEY_6 = Key.Key6;
+export const KEY_7 = Key.Key7;
+export const KEY_8 = Key.Key8;
+export const KEY_9 = Key.Key9;
+export const KEY_SEMICOLON = Key.Semicolon;
+export const KEY_EQUAL = Key.Equal;
+export const KEY_A = Key.A;
+export const KEY_B = Key.B;
+export const KEY_C = Key.C;
+export const KEY_D = Key.D;
+export const KEY_E = Key.E;
+export const KEY_F = Key.F;
+export const KEY_G = Key.G;
+export const KEY_H = Key.H;
+export const KEY_I = Key.I;
+export const KEY_J = Key.J;
+export const KEY_K = Key.K;
+export const KEY_L = Key.L;
+export const KEY_M = Key.M;
+export const KEY_N = Key.N;
+export const KEY_O = Key.O;
+export const KEY_P = Key.P;
+export const KEY_Q = Key.Q;
+export const KEY_R = Key.R;
+export const KEY_S = Key.S;
+export const KEY_T = Key.T;
+export const KEY_U = Key.U;
+export const KEY_V = Key.V;
+export const KEY_W = Key.W;
+export const KEY_X = Key.X;
+export const KEY_Y = Key.Y;
+export const KEY_Z = Key.Z;
+export const KEY_WINDOWS = Key.Windows;
+export const KEY_CONTEXT_MENU = Key.ContextMenu;
+export const KEY_NUMPAD_0 = Key.Numpad0;
+export const KEY_NUMPAD_1 = Key.Numpad1;
+export const KEY_NUMPAD_2 = Key.Numpad2;
+export const KEY_NUMPAD_3 = Key.Numpad3;
+export const KEY_NUMPAD_4 = Key.Numpad4;
+export const KEY_NUMPAD_5 = Key.Numpad5;
+export const KEY_NUMPAD_6 = Key.Numpad6;
+export const KEY_NUMPAD_7 = Key.Numpad7;
+export const KEY_NUMPAD_8 = Key.Numpad8;
+export const KEY_NUMPAD_9 = Key.Numpad9;
+export const KEY_MULTIPLY = Key.Multiply;
+export const KEY_ADD = Key.Add;
+export const KEY_SEPARATOR = Key.Separator;
+export const KEY_SUBTRACT = Key.Subtract;
+export const KEY_DECIMAL = Key.Decimal;
+export const KEY_DIVIDE = Key.Divide;
+export const KEY_F1 = Key.F1;
+export const KEY_F2 = Key.F2;
+export const KEY_F3 = Key.F3;
+export const KEY_F4 = Key.F4;
+export const KEY_F5 = Key.F5;
+export const KEY_F6 = Key.F6;
+export const KEY_F7 = Key.F7;
+export const KEY_F8 = Key.F8;
+export const KEY_F9 = Key.F9;
+export const KEY_F10 = Key.F10;
+export const KEY_F11 = Key.F11;
+export const KEY_F12 = Key.F12;
+export const KEY_COMMA = Key.Comma;
+export const KEY_PERIOD = Key.Period;
+export const KEY_SLASH = Key.Slash;
+export const KEY_OPEN_BRACKET = Key.OpenBracket;
+export const KEY_BACK_SLASH = Key.BackSlash;
+export const KEY_CLOSE_BRACKET = Key.CloseBracket;
+export const KEY_META = Key.Meta;
+
+export const MOUSEBUTTON_NONE = MouseButton.None;
+export const MOUSEBUTTON_LEFT = MouseButton.Left;
+export const MOUSEBUTTON_MIDDLE = MouseButton.Middle;
+export const MOUSEBUTTON_RIGHT = MouseButton.Right;
+
 Object.defineProperty(ElementInput.prototype, 'wheel', {
     get: function () {
         return this.wheelDelta * -2;
diff --git a/src/framework/app-base.js b/src/framework/app-base.js
index 3145d869e28..47b91fadde9 100644
--- a/src/framework/app-base.js
+++ b/src/framework/app-base.js
@@ -284,7 +284,7 @@ class AppBase extends EventHandler {
      * @type {boolean}
      * @example
      * // Render the scene only while space key is pressed
-     * if (this.app.keyboard.isPressed(pc.KEY_SPACE)) {
+     * if (this.app.keyboard.isPressed(pc.Key.Space)) {
      *     this.app.renderNextFrame = true;
      * }
      */
diff --git a/src/framework/xr/xr-manager.js b/src/framework/xr/xr-manager.js
index 509d6c1f33c..504b3437194 100644
--- a/src/framework/xr/xr-manager.js
+++ b/src/framework/xr/xr-manager.js
@@ -569,7 +569,7 @@ class XrManager extends EventHandler {
      * session.
      * @example
      * app.keyboard.on('keydown', (evt) => {
-     *     if (evt.key === pc.KEY_ESCAPE && app.xr.active) {
+     *     if (evt.key === pc.Key.Escape && app.xr.active) {
      *         app.xr.end();
      *     }
      * });
diff --git a/src/index.js b/src/index.js
index 236cb540b60..eb648af79f8 100644
--- a/src/index.js
+++ b/src/index.js
@@ -144,6 +144,7 @@ export { GamePads } from './platform/input/game-pads.js';
 export { Keyboard } from './platform/input/keyboard.js';
 export { KeyboardEvent } from './platform/input/keyboard-event.js';
 export { Mouse } from './platform/input/mouse.js';
+export { MouseButton } from './platform/input/mouse-button.js';
 export { MouseEvent } from './platform/input/mouse-event.js';
 export { TouchDevice } from './platform/input/touch-device.js';
 export { getTouchTargetCoords, Touch, TouchEvent } from './platform/input/touch-event.js';
diff --git a/src/platform/input/constants.js b/src/platform/input/constants.js
index d6df3bb2d33..d50bde528b1 100644
--- a/src/platform/input/constants.js
+++ b/src/platform/input/constants.js
@@ -10,616 +10,6 @@ export const AXIS_PAD_R_X = 'padrx';
 export const AXIS_PAD_R_Y = 'padry';
 export const AXIS_KEY = 'key';
 
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_BACKSPACE = 8;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_TAB = 9;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_RETURN = 13;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_ENTER = 13;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_SHIFT = 16;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_CONTROL = 17;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_ALT = 18;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_PAUSE = 19;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_CAPS_LOCK = 20;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_ESCAPE = 27;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_SPACE = 32;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_PAGE_UP = 33;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_PAGE_DOWN = 34;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_END = 35;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_HOME = 36;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_LEFT = 37;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_UP = 38;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_RIGHT = 39;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_DOWN = 40;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_PRINT_SCREEN = 44;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_INSERT = 45;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_DELETE = 46;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_0 = 48;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_1 = 49;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_2 = 50;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_3 = 51;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_4 = 52;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_5 = 53;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_6 = 54;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_7 = 55;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_8 = 56;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_9 = 57;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_SEMICOLON = 59;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_EQUAL = 61;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_A = 65;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_B = 66;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_C = 67;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_D = 68;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_E = 69;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_F = 70;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_G = 71;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_H = 72;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_I = 73;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_J = 74;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_K = 75;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_L = 76;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_M = 77;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_N = 78;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_O = 79;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_P = 80;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_Q = 81;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_R = 82;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_S = 83;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_T = 84;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_U = 85;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_V = 86;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_W = 87;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_X = 88;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_Y = 89;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_Z = 90;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_WINDOWS = 91;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_CONTEXT_MENU = 93;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_NUMPAD_0 = 96;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_NUMPAD_1 = 97;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_NUMPAD_2 = 98;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_NUMPAD_3 = 99;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_NUMPAD_4 = 100;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_NUMPAD_5 = 101;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_NUMPAD_6 = 102;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_NUMPAD_7 = 103;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_NUMPAD_8 = 104;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_NUMPAD_9 = 105;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_MULTIPLY = 106;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_ADD = 107;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_SEPARATOR = 108;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_SUBTRACT = 109;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_DECIMAL = 110;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_DIVIDE = 111;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_F1 = 112;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_F2 = 113;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_F3 = 114;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_F4 = 115;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_F5 = 116;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_F6 = 117;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_F7 = 118;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_F8 = 119;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_F9 = 120;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_F10 = 121;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_F11 = 122;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_F12 = 123;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_COMMA = 188;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_PERIOD = 190;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_SLASH = 191;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_OPEN_BRACKET = 219;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_BACK_SLASH = 220;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_CLOSE_BRACKET = 221;
-
-/**
- * @type {number}
- * @category Input
- */
-export const KEY_META = 224;
-
-/**
- * No mouse buttons pressed.
- *
- * @category Input
- */
-export const MOUSEBUTTON_NONE = -1;
-
-/**
- * The left mouse button.
- *
- * @category Input
- */
-export const MOUSEBUTTON_LEFT = 0;
-
-/**
- * The middle mouse button.
- *
- * @category Input
- */
-export const MOUSEBUTTON_MIDDLE = 1;
-
-/**
- * The right mouse button.
- *
- * @category Input
- */
-export const MOUSEBUTTON_RIGHT = 2;
-
 /**
  * Index for pad 1.
  *
diff --git a/src/platform/input/controller.js b/src/platform/input/controller.js
index 77e4779a7a4..8c11362c2fa 100644
--- a/src/platform/input/controller.js
+++ b/src/platform/input/controller.js
@@ -62,7 +62,7 @@ class Controller {
      * const c = new pc.Controller(document);
      *
      * // Register the "fire" action and assign it to both the Enter key and the space bar.
-     * c.registerKeys("fire", [pc.KEY_ENTER, pc.KEY_SPACE]);
+     * c.registerKeys("fire", [pc.Key.Enter, pc.Key.Space]);
      */
     constructor(element, options = {}) {
         this._keyboard = options.keyboard || null;
@@ -158,8 +158,8 @@ class Controller {
      * @param {string} action_name - The name of the action.
      * @param {object} action - An action object to add.
      * @param {ACTION_KEYBOARD | ACTION_MOUSE | ACTION_GAMEPAD} action.type - The name of the action.
-     * @param {number[]} [action.keys] - Keyboard: A list of keycodes e.g. `[pc.KEY_A, pc.KEY_ENTER]`.
-     * @param {number} [action.button] - Mouse: e.g. `pc.MOUSEBUTTON_LEFT` - Gamepad: e.g. `pc.PAD_FACE_1`
+     * @param {number[]} [action.keys] - Keyboard: A list of keycodes e.g. `[pc.Key.A, pc.Key.Enter]`.
+     * @param {number} [action.button] - Mouse: e.g. `pc.MouseButton.Left` - Gamepad: e.g. `pc.PAD_FACE_1`
      * @param {number} [action.pad] - Gamepad: An index of the pad to register (use {@link PAD_1}, etc).
      */
     appendAction(action_name, action) {
diff --git a/src/platform/input/keyboard-event.js b/src/platform/input/keyboard-event.js
index 11a1a69bb33..f9fcdce5bc8 100644
--- a/src/platform/input/keyboard-event.js
+++ b/src/platform/input/keyboard-event.js
@@ -1,4 +1,5 @@
 /**
+ * @import { Key } from './key.js';
  * @import { Keyboard } from './keyboard.js'
  */
 
@@ -13,9 +14,9 @@
  */
 class KeyboardEvent {
     /**
-     * The keyCode of the key that has changed. See the KEY_* constants.
+     * The keyCode of the key that has changed.
      *
-     * @type {number|null}
+     * @type {Key|null}
      */
     key = null;
 
@@ -40,7 +41,7 @@ class KeyboardEvent {
      * @param {globalThis.KeyboardEvent} event - The original browser event that was fired.
      * @example
      * const onKeyDown = function (e) {
-     *     if (e.key === pc.KEY_SPACE) {
+     *     if (e.key === pc.Key.Space) {
      *         // space key pressed
      *     }
      *     e.event.preventDefault(); // Use original browser event to prevent browser action.
diff --git a/src/platform/input/keyboard.js b/src/platform/input/keyboard.js
index 34f1bfc8f88..74604f50291 100644
--- a/src/platform/input/keyboard.js
+++ b/src/platform/input/keyboard.js
@@ -3,6 +3,10 @@ import { EventHandler } from '../../core/event-handler.js';
 
 import { KeyboardEvent } from './keyboard-event.js';
 
+/**
+ * @import { Key } from './key.js'
+ */
+
 // internal global keyboard events
 const _keyboardEvent = new KeyboardEvent();
 
@@ -70,7 +74,7 @@ class Keyboard extends EventHandler {
      * @event
      * @example
      * const onKeyDown = (e) => {
-     *     if (e.key === pc.KEY_SPACE) {
+     *     if (e.key === pc.Key.Space) {
      *         // space key pressed
      *     }
      *     e.event.preventDefault(); // Use original browser event to prevent browser action.
@@ -86,7 +90,7 @@ class Keyboard extends EventHandler {
      * @event
      * @example
      * const onKeyUp = (e) => {
-     *     if (e.key === pc.KEY_SPACE) {
+     *     if (e.key === pc.Key.Space) {
      *         // space key released
      *     }
      *     e.event.preventDefault(); // Use original browser event to prevent browser action.
@@ -313,7 +317,7 @@ class Keyboard extends EventHandler {
     /**
      * Return true if the key is currently down.
      *
-     * @param {number} key - The keyCode of the key to test. See the KEY_* constants.
+     * @param {Key} key - The keyCode of the key to test.
      * @returns {boolean} True if the key was pressed, false if not.
      */
     isPressed(key) {
@@ -326,7 +330,7 @@ class Keyboard extends EventHandler {
     /**
      * Returns true if the key was pressed since the last update.
      *
-     * @param {number} key - The keyCode of the key to test. See the KEY_* constants.
+     * @param {Key} key - The keyCode of the key to test.
      * @returns {boolean} True if the key was pressed.
      */
     wasPressed(key) {
@@ -339,7 +343,7 @@ class Keyboard extends EventHandler {
     /**
      * Returns true if the key was released since the last update.
      *
-     * @param {number} key - The keyCode of the key to test. See the KEY_* constants.
+     * @param {Key} key - The keyCode of the key to test.
      * @returns {boolean} True if the key was pressed.
      */
     wasReleased(key) {
diff --git a/src/platform/input/mouse-button.js b/src/platform/input/mouse-button.js
new file mode 100644
index 00000000000..75314f1a78f
--- /dev/null
+++ b/src/platform/input/mouse-button.js
@@ -0,0 +1,20 @@
+/**
+ * Mouse buttons.
+ *
+ * @readonly
+ * @enum {typeof MouseButton[keyof typeof MouseButton]}
+ * @category Input
+ */
+export const MouseButton = Object.freeze({
+    /** No button. */
+    None: -1,
+
+    /** The left mouse button. */
+    Left: 0,
+
+    /** The middle mouse button. */
+    Middle: 1,
+
+    /** The right mouse button. */
+    Right: 2
+});
diff --git a/src/platform/input/mouse-event.js b/src/platform/input/mouse-event.js
index 230d4636fb8..c93528d9eee 100644
--- a/src/platform/input/mouse-event.js
+++ b/src/platform/input/mouse-event.js
@@ -1,4 +1,4 @@
-import { MOUSEBUTTON_NONE } from './constants.js';
+import { MouseButton } from './mouse-button.js';
 
 /**
  * @import { Mouse } from './mouse.js'
@@ -9,9 +9,9 @@ import { MOUSEBUTTON_NONE } from './constants.js';
  *
  * @returns {boolean} True if pointer lock is currently enabled.
  */
-function isMousePointerLocked() {
+const isMousePointerLocked = () => {
     return !!(document.pointerLockElement || document.mozPointerLockElement || document.webkitPointerLockElement);
-}
+};
 
 /**
  * The MouseEvent object is passed into all event handlers registered on the {@link Mouse}. The
@@ -54,15 +54,11 @@ class MouseEvent {
     dy = 0;
 
     /**
-     * The mouse button associated with this event. Can be:
-     *
-     * - {@link MOUSEBUTTON_LEFT}
-     * - {@link MOUSEBUTTON_MIDDLE}
-     * - {@link MOUSEBUTTON_RIGHT}
+     * The mouse button associated with this event.
      *
-     * @type {number}
+     * @type {MouseButton}
      */
-    button = MOUSEBUTTON_NONE;
+    button = MouseButton.NONE;
 
     /**
      * A value representing the amount the mouse wheel has moved, only valid for
diff --git a/src/platform/input/mouse.js b/src/platform/input/mouse.js
index 0b694e23d67..ce495e36fba 100644
--- a/src/platform/input/mouse.js
+++ b/src/platform/input/mouse.js
@@ -3,6 +3,10 @@ import { EventHandler } from '../../core/event-handler.js';
 
 import { isMousePointerLocked, MouseEvent } from './mouse-event.js';
 
+/**
+ * @import { MouseButton } from './mouse-button.js';
+ */
+
 /**
  * @callback LockMouseCallback
  * Callback used by {@link Mouse#enablePointerLock} and {@link Mouse#disablePointerLock}.
@@ -245,12 +249,7 @@ class Mouse extends EventHandler {
     /**
      * Returns true if the mouse button is currently pressed.
      *
-     * @param {number} button - The mouse button to test. Can be:
-     *
-     * - {@link MOUSEBUTTON_LEFT}
-     * - {@link MOUSEBUTTON_MIDDLE}
-     * - {@link MOUSEBUTTON_RIGHT}
-     *
+     * @param {MouseButton} button - The mouse button to test.
      * @returns {boolean} True if the mouse button is current pressed.
      */
     isPressed(button) {
@@ -260,12 +259,7 @@ class Mouse extends EventHandler {
     /**
      * Returns true if the mouse button was pressed this frame (since the last call to update).
      *
-     * @param {number} button - The mouse button to test. Can be:
-     *
-     * - {@link MOUSEBUTTON_LEFT}
-     * - {@link MOUSEBUTTON_MIDDLE}
-     * - {@link MOUSEBUTTON_RIGHT}
-     *
+     * @param {MouseButton} button - The mouse button to test.
      * @returns {boolean} True if the mouse button was pressed since the last update.
      */
     wasPressed(button) {
@@ -275,12 +269,7 @@ class Mouse extends EventHandler {
     /**
      * Returns true if the mouse button was released this frame (since the last call to update).
      *
-     * @param {number} button - The mouse button to test. Can be:
-     *
-     * - {@link MOUSEBUTTON_LEFT}
-     * - {@link MOUSEBUTTON_MIDDLE}
-     * - {@link MOUSEBUTTON_RIGHT}
-     *
+     * @param {MouseButton} button - The mouse button to test.
      * @returns {boolean} True if the mouse button was released since the last update.
      */
     wasReleased(button) {
diff --git a/test/platform/input/mouse.test.mjs b/test/platform/input/mouse.test.mjs
index 1e1b10197de..7c7bca5b1dc 100644
--- a/test/platform/input/mouse.test.mjs
+++ b/test/platform/input/mouse.test.mjs
@@ -1,9 +1,9 @@
 import { expect } from 'chai';
 
-import { MOUSEBUTTON_LEFT, MOUSEBUTTON_MIDDLE, MOUSEBUTTON_RIGHT } from '../../../src/platform/input/constants.js';
+import { MouseButton } from '../../../src/platform/input/mouse-button.js';
 import { Mouse } from '../../../src/platform/input/mouse.js';
 
-const buttons = [MOUSEBUTTON_LEFT, MOUSEBUTTON_MIDDLE, MOUSEBUTTON_RIGHT];
+const buttons = [MouseButton.Left, MouseButton.Middle, MouseButton.Right];
 
 // Mock the _getTargetCoords method, otherwise it returns null
 Mouse.prototype._getTargetCoords = function (event) {
@@ -59,7 +59,7 @@ describe('Mouse', function () {
 
         it('should handle mousedown events', (done) => {
             mouse.on('mousedown', (event) => {
-                expect(event.button).to.equal(MOUSEBUTTON_LEFT);
+                expect(event.button).to.equal(MouseButton.Left);
                 expect(event.event).to.be.an.instanceOf(MouseEvent);
 
                 done();
@@ -71,7 +71,7 @@ describe('Mouse', function () {
 
         it('should handle mouseup events', (done) => {
             mouse.on('mouseup', (event) => {
-                expect(event.button).to.equal(MOUSEBUTTON_LEFT);
+                expect(event.button).to.equal(MouseButton.Left);
                 expect(event.event).to.be.an.instanceOf(MouseEvent);
 
                 done();