chore: Remove Blockly.utils.global (#6120)

The Closure Compiler creates globalThis as a pollyfill.

core/utils/global.js

@@ -1,41 +0,0 @@
-/**
- * @license
- * Copyright 2019 Google LLC
- * SPDX-License-Identifier: Apache-2.0
- */
-
-/**
- * @fileoverview Provides a reference to the global object.
- */
-'use strict';
-
-/**
- * Provides a reference to the global object.
- * @namespace Blockly.utils.global
- */
-goog.module('Blockly.utils.global');
-
-
-/* eslint-disable no-undef, no-invalid-this */
-
-/**
- * Reference to the global object.
- *
- * More info on this implementation here:
- * https://docs.google.com/document/d/1NAeW4Wk7I7FV0Y2tcUFvQdGMc89k2vdgSXInw8_nvCI
- */
-exports.globalThis = (function() {  // Not "let globalThis" to avoid shadowing.
-  if (typeof globalThis === 'object') {
-    return globalThis;
-  }
-  if (typeof self === 'object') {
-    return self;
-  }
-  if (typeof window === 'object') {
-    return window;
-  }
-  if (typeof global === 'object') {
-    return global;
-  }
-  return this;
-})();

core/utils/svg_math.js

@@ -16,7 +16,6 @@
 goog.module('Blockly.utils.svgMath');
 
 const deprecation = goog.require('Blockly.utils.deprecation');
-const global = goog.require('Blockly.utils.global');
 const style = goog.require('Blockly.utils.style');
 const userAgent = goog.require('Blockly.utils.userAgent');
 const {Coordinate} = goog.require('Blockly.utils.Coordinate');
@@ -130,7 +129,7 @@ const is3dSupported = function() {
   }
   // CC-BY-SA Lorenzo Polidori
   // stackoverflow.com/questions/5661671/detecting-transform-translate3d-support
-  if (!global.globalThis['getComputedStyle']) {
+  if (!globalThis['getComputedStyle']) {
     return false;
   }
 
@@ -150,7 +149,7 @@ const is3dSupported = function() {
   for (const t in transforms) {
     if (el.style[t] !== undefined) {
       el.style[t] = 'translate3d(1px,1px,1px)';
-      const computedStyle = global.globalThis['getComputedStyle'](el);
+      const computedStyle = globalThis['getComputedStyle'](el);
       if (!computedStyle) {
         // getComputedStyle in Firefox returns null when Blockly is loaded
         // inside an iframe with display: none.  Returning false and not

core/utils/useragent.js

@@ -19,8 +19,6 @@
  */
 goog.module('Blockly.utils.userAgent');
 
-const {globalThis} = goog.require('Blockly.utils.global');
-
 
 /**
  * The raw useragent string.

core/utils/xml.js

@@ -19,8 +19,6 @@
  */
 goog.module('Blockly.utils.xml');
 
-const {globalThis} = goog.require('Blockly.utils.global');
-
 
 /**
  * Namespace for Blockly's XML.