Animation: Fix ReferenceError in non-broswer environment

Node.js and Deno do not support `self`.

Author: chirsz-ever

src/renderers/common/Animation.js

@@ -1,3 +1,4 @@
+import { getGlobalThis } from '../../utils.js';
 
 /**
  * This module manages the internal animation loop of the renderer.
@@ -34,7 +35,7 @@ class Animation {
 		 *
 		 * @type {Window|XRSession}
 		 */
-		this._context = self;
+		this._context = getGlobalThis();
 
 		/**
 		 * The user-defined animation loop.

src/utils.js

@@ -149,4 +149,16 @@ function toReversedProjectionMatrix( projectionMatrix ) {
 
 }
 
-export { arrayMin, arrayMax, arrayNeedsUint32, getTypedArray, createElementNS, createCanvasElement, warnOnce, probeAsync, toNormalizedProjectionMatrix, toReversedProjectionMatrix };
+// referred https://github.com/zloirock/core-js/blob/78474627edab1ab1a1510721185cfc5b66c36770/packages/core-js/internals/global-this.js
+// Three.js nearly always runs on broswers, so it would directly return `self` in most cases.
+// We do not check `window`, because in our situation `self` is enough.
+function getGlobalThis() {
+
+	return typeof self !== 'undefined' ? self : // broswer or Web Worker
+		typeof globalThis !== 'undefined' ? globalThis : // ES2020
+			typeof global !== 'undefined' ? global : // Node.js
+				Function( 'return this' )(); // may break CSP, but it should never run on here
+
+}
+
+export { arrayMin, arrayMax, arrayNeedsUint32, getTypedArray, createElementNS, createCanvasElement, warnOnce, probeAsync, toNormalizedProjectionMatrix, toReversedProjectionMatrix, getGlobalThis };