fix: Capture Promise global to avoid userland mutation

This an equivalent of electron/electron#20925.
It’s needed for us to pass the test suite when we’re actually testing
this module instead of Electron’s builtin remote.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

src/main/server.ts

@@ -6,6 +6,8 @@ import { ipcMain, WebContents, IpcMainEvent, app } from 'electron'
 import { IPC_MESSAGES } from '../common/ipc-messages';
 import { getElectronBinding } from '../common/get-electron-binding'
 
+const { Promise } = global
+
 const v8Util = getElectronBinding('v8_util')
 
 const hasWebPrefsRemoteModuleAPI = (() => {

src/renderer/remote.ts

@@ -6,6 +6,8 @@ import { browserModuleNames } from '../common/module-names'
 import { getElectronBinding } from '../common/get-electron-binding'
 import { IPC_MESSAGES } from '../common/ipc-messages';
 
+const { Promise } = global
+
 const callbacksRegistry = new CallbacksRegistry()
 const remoteObjectCache = new Map()
 const finalizationRegistry = new FinalizationRegistry((id: number) => {