lib: enforce using primordials.globalThis instead of global

PR-URL: #38230
Backport-PR-URL: #39448
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

lib/.eslintrc.yaml

@@ -29,6 +29,8 @@ rules:
     - error
     - name: globalThis
       message: "Use `const { globalThis } = primordials;` instead of the global."
+    - name: global
+      message: "Use `const { globalThis } = primordials;` instead of `global`."
   # Custom rules in tools/eslint-rules
   node-core/lowercase-name-for-primitive: error
   node-core/non-ascii-character: error

lib/internal/bootstrap/node.js

@@ -45,6 +45,7 @@ const {
   ObjectGetPrototypeOf,
   ObjectSetPrototypeOf,
   SymbolToStringTag,
+  globalThis,
 } = primordials;
 const config = internalBinding('config');
 const { deprecate } = require('internal/util');
@@ -119,34 +120,35 @@ if (!config.noBrowserGlobals) {
   // Override global console from the one provided by the VM
   // to the one implemented by Node.js
   // https://console.spec.whatwg.org/#console-namespace
-  exposeNamespace(global, 'console', createGlobalConsole(global.console));
+  exposeNamespace(globalThis, 'console',
+                  createGlobalConsole(globalThis.console));
 
   const { URL, URLSearchParams } = require('internal/url');
   // https://url.spec.whatwg.org/#url
-  exposeInterface(global, 'URL', URL);
+  exposeInterface(globalThis, 'URL', URL);
   // https://url.spec.whatwg.org/#urlsearchparams
-  exposeInterface(global, 'URLSearchParams', URLSearchParams);
+  exposeInterface(globalThis, 'URLSearchParams', URLSearchParams);
 
   const {
     TextEncoder, TextDecoder
   } = require('internal/encoding');
   // https://encoding.spec.whatwg.org/#textencoder
-  exposeInterface(global, 'TextEncoder', TextEncoder);
+  exposeInterface(globalThis, 'TextEncoder', TextEncoder);
   // https://encoding.spec.whatwg.org/#textdecoder
-  exposeInterface(global, 'TextDecoder', TextDecoder);
+  exposeInterface(globalThis, 'TextDecoder', TextDecoder);
 
   // https://html.spec.whatwg.org/multipage/webappapis.html#windoworworkerglobalscope
   const timers = require('timers');
-  defineOperation(global, 'clearInterval', timers.clearInterval);
-  defineOperation(global, 'clearTimeout', timers.clearTimeout);
-  defineOperation(global, 'setInterval', timers.setInterval);
-  defineOperation(global, 'setTimeout', timers.setTimeout);
+  defineOperation(globalThis, 'clearInterval', timers.clearInterval);
+  defineOperation(globalThis, 'clearTimeout', timers.clearTimeout);
+  defineOperation(globalThis, 'setInterval', timers.setInterval);
+  defineOperation(globalThis, 'setTimeout', timers.setTimeout);
 
-  defineOperation(global, 'queueMicrotask', queueMicrotask);
+  defineOperation(globalThis, 'queueMicrotask', queueMicrotask);
 
   // Non-standard extensions:
-  defineOperation(global, 'clearImmediate', timers.clearImmediate);
-  defineOperation(global, 'setImmediate', timers.setImmediate);
+  defineOperation(globalThis, 'clearImmediate', timers.clearImmediate);
+  defineOperation(globalThis, 'setImmediate', timers.setImmediate);
 }
 
 // Set the per-Environment callback that will be called
@@ -280,7 +282,7 @@ function setupProcessObject() {
     value: 'process'
   });
   // Make process globally available to users by putting it on the global proxy
-  ObjectDefineProperty(global, 'process', {
+  ObjectDefineProperty(globalThis, 'process', {
     value: process,
     enumerable: false,
     writable: true,
@@ -289,7 +291,7 @@ function setupProcessObject() {
 }
 
 function setupGlobalProxy() {
-  ObjectDefineProperty(global, SymbolToStringTag, {
+  ObjectDefineProperty(globalThis, SymbolToStringTag, {
     value: 'global',
     writable: false,
     enumerable: false,
@@ -306,7 +308,7 @@ function setupBuffer() {
   delete bufferBinding.setBufferPrototype;
   delete bufferBinding.zeroFill;
 
-  ObjectDefineProperty(global, 'Buffer', {
+  ObjectDefineProperty(globalThis, 'Buffer', {
     value: Buffer,
     enumerable: false,
     writable: true,

lib/internal/bootstrap/pre_execution.js

@@ -7,6 +7,7 @@ const {
   SafeMap,
   SafeWeakMap,
   StringPrototypeStartsWith,
+  globalThis,
 } = primordials;
 
 const {
@@ -290,7 +291,7 @@ function initializeDeprecations() {
   // deprecation path for these in ES Modules.
   // See https://github.com/nodejs/node/pull/26334.
   let _process = process;
-  ObjectDefineProperty(global, 'process', {
+  ObjectDefineProperty(globalThis, 'process', {
     get() {
       return _process;
     },
@@ -302,7 +303,7 @@ function initializeDeprecations() {
   });
 
   let _Buffer = Buffer;
-  ObjectDefineProperty(global, 'Buffer', {
+  ObjectDefineProperty(globalThis, 'Buffer', {
     get() {
       return _Buffer;
     },
@@ -321,7 +322,7 @@ function initializeAbortController() {
       AbortController,
       AbortSignal
     } = require('internal/abort_controller');
-    ObjectDefineProperties(global, {
+    ObjectDefineProperties(globalThis, {
       AbortController: {
         writable: true,
         enumerable: false,

lib/internal/main/eval_string.js

@@ -3,6 +3,10 @@
 // User passed `-e` or `--eval` arguments to Node without `-i` or
 // `--interactive`.
 
+const {
+  globalThis,
+} = primordials;
+
 const {
   prepareMainThreadExecution
 } = require('internal/bootstrap/pre_execution');
@@ -12,7 +16,7 @@ const { addBuiltinLibsToObject } = require('internal/modules/cjs/helpers');
 const { getOptionValue } = require('internal/options');
 
 prepareMainThreadExecution();
-addBuiltinLibsToObject(global);
+addBuiltinLibsToObject(globalThis);
 markBootstrapComplete();
 
 const source = getOptionValue('--eval');

lib/internal/per_context/primordials.js

@@ -195,6 +195,7 @@ primordials.SafeWeakSet = makeSafe(
   'Math',
   'Reflect'
 ].forEach((name) => {
+  // eslint-disable-next-line no-restricted-globals
   copyPropsRenamed(global[name], primordials, name);
 });
 
@@ -235,6 +236,7 @@ primordials.SafeWeakSet = makeSafe(
   'WeakMap',
   'WeakSet',
 ].forEach((name) => {
+  // eslint-disable-next-line no-restricted-globals
   const original = global[name];
   primordials[name] = original;
   copyPropsRenamed(original, primordials, name);
@@ -247,6 +249,7 @@ primordials.SafeWeakSet = makeSafe(
 [
   'Promise',
 ].forEach((name) => {
+  // eslint-disable-next-line no-restricted-globals
   const original = global[name];
   primordials[name] = original;
   copyPropsRenamedBound(original, primordials, name);

lib/internal/util/inspect.js

@@ -3,6 +3,7 @@
 const {
   Array,
   ArrayIsArray,
+  ArrayPrototypeFilter,
   BigIntPrototypeValueOf,
   BooleanPrototypeValueOf,
   DatePrototypeGetTime,
@@ -41,7 +42,9 @@ const {
   ObjectSetPrototypeOf,
   ReflectApply,
   RegExp,
+  RegExpPrototypeExec,
   RegExpPrototypeToString,
+  SafeSet,
   SafeStringIterator,
   Set,
   SetPrototypeGetSize,
@@ -55,6 +58,7 @@ const {
   TypedArrayPrototypeGetLength,
   TypedArrayPrototypeGetSymbolToStringTag,
   Uint8Array,
+  globalThis,
   uncurryThis,
 } = primordials;
 
@@ -120,8 +124,11 @@ const { NativeModule } = require('internal/bootstrap/loaders');
 
 let hexSlice;
 
-const builtInObjects = new Set(
-  ObjectGetOwnPropertyNames(global).filter((e) => /^[A-Z][a-zA-Z0-9]+$/.test(e))
+const builtInObjects = new SafeSet(
+  ArrayPrototypeFilter(
+    ObjectGetOwnPropertyNames(globalThis),
+    (e) => RegExpPrototypeExec(/^[A-Z][a-zA-Z0-9]+$/, e) !== null
+  )
 );
 
 // https://tc39.es/ecma262/#sec-IsHTMLDDA-internal-slot

lib/repl.js

@@ -43,6 +43,7 @@
 'use strict';
 
 const {
+  ArrayPrototypeForEach,
   Error,
   MathMax,
   NumberIsNaN,
@@ -67,6 +68,7 @@ const {
   SyntaxError,
   SyntaxErrorPrototype,
   WeakSet,
+  globalThis,
 } = primordials;
 
 const {
@@ -984,7 +986,7 @@ REPLServer.prototype.close = function close() {
 REPLServer.prototype.createContext = function() {
   let context;
   if (this.useGlobal) {
-    context = global;
+    context = globalThis;
   } else {
     sendInspectorCommand((session) => {
       session.post('Runtime.enable');
@@ -996,13 +998,13 @@ REPLServer.prototype.createContext = function() {
     }, () => {
       context = vm.createContext();
     });
-    for (const name of ObjectGetOwnPropertyNames(global)) {
+    ArrayPrototypeForEach(ObjectGetOwnPropertyNames(globalThis), (name) => {
       // Only set properties that do not already exist as a global builtin.
       if (!globalBuiltins.has(name)) {
         ObjectDefineProperty(context, name,
-                             ObjectGetOwnPropertyDescriptor(global, name));
+                             ObjectGetOwnPropertyDescriptor(globalThis, name));
       }
-    }
+    });
     context.global = context;
     const _console = new Console(this.output);
     ObjectDefineProperty(context, 'console', {