swap ENVIRONMENT_IS_* functions for Utils named exports

src/node/config/scripts/generateNodeIndex.mjs

@@ -55,17 +55,6 @@ code +=`
 
 global.File = File;
 
-// Define global environment functions
-global.ENVIRONMENT_IS_WORKER = function() {
-    return typeof importScripts === "function";
-};
-global.ENVIRONMENT_IS_NODE = function() {
-    return typeof process === "object" && typeof require === "function";
-};
-global.ENVIRONMENT_IS_WEB = function() {
-    return typeof window === "object";
-};
-
 /**
  * generateChef
  *