process: global.process, global.Buffer getters

PR-URL: https://github.com/nodejs/node/pull/26882
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

1 files changed, 28 insertions, 0 deletions

diff --git a/lib/internal/bootstrap/pre_execution.js b/lib/internal/bootstrap/pre_execution.js
index c38822bd89..233ab4f879 100644
--- a/lib/internal/bootstrap/pre_execution.js
+++ b/lib/internal/bootstrap/pre_execution.js
@@ -1,6 +1,7 @@
 'use strict';
 
 const { getOptionValue } = require('internal/options');
+const { Buffer } = require('buffer');
 
 function prepareMainThreadExecution() {
   // Patch the process object with legacy properties and normalizations
@@ -221,6 +222,33 @@ function initializeDeprecations() {
                                 'process.binding() is deprecated. ' +
                                 'Please use public APIs instead.', 'DEP0111');
   }
+
+  // Create global.process and global.Buffer as getters so that we have a
+  // deprecation path for these in ES Modules.
+  // See https://github.com/nodejs/node/pull/26334.
+  let _process = process;
+  Object.defineProperty(global, 'process', {
+    get() {
+      return _process;
+    },
+    set(value) {
+      _process = value;
+    },
+    enumerable: false,
+    configurable: true
+  });
+
+  let _Buffer = Buffer;
+  Object.defineProperty(global, 'Buffer', {
+    get() {
+      return _Buffer;
+    },
+    set(value) {
+      _Buffer = value;
+    },
+    enumerable: false,
+    configurable: true
+  });
 }
 
 function setupChildProcessIpcChannel() {