polyfillPromise.js imports a `promise` package that never used as `hasPromise()` is always true

[retyui]

Description

Currently we have a runtime check for hasPromise() that leads to bundling a dead code (promise package) in the final JS bundle

react-native/packages/react-native/Libraries/Core/polyfillPromise.js

Lines 23 to 38 in eda6f4f

	// If global.Promise is provided by Hermes, we are confident that it can provide
	// all the methods needed by React Native, so we can directly use it.
	if (global?.HermesInternal?.hasPromise?.()) {
	const HermesPromise = global.Promise;
	if (__DEV__) {
	if (typeof HermesPromise !== 'function') {
	console.error('HermesPromise does not exist');
	}
	global.HermesInternal?.enablePromiseRejectionTracker?.(
	require('../promiseRejectionTrackingOptions').default,
	);
	}
	} else {
	polyfillGlobal('Promise', () => require('../Promise').default);
	}

hasPromise () is true by default so promise package code is never used by thousands apps in productions

Steps to reproduce

...

React Native Version

0.86.0

Affected Platforms

Runtime - Android, Runtime - iOS

Output of npx @react-native-community/cli info

System:
  OS: macOS 26.5
  CPU: (11) arm64 Apple M3 Pro
  Memory: 5.12 GB / 36.00 GB
  Shell:
    version: 4.0.1
    path: /opt/homebrew/bin/fish
Binaries:
  Node:
    version: 24.13.1
    path: /usr/local/bin/node
  Yarn:
    version: 3.6.4
    path: /opt/homebrew/bin/yarn
  npm:
    version: 11.8.0
    path: /usr/local/bin/npm
  Watchman:
    version: 2025.09.01.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.16.2
    path: /Users/i/.rbenv/shims/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 25.2
      - iOS 26.2
      - macOS 26.2
      - tvOS 26.2
      - visionOS 26.2
      - watchOS 26.2
  Android SDK:
    API Levels:
      - "34"
      - "35"
      - "36"
    Build Tools:
      - 33.0.1
      - 34.0.0
      - 35.0.0
      - 36.0.0
      - 37.0.0
    System Images:
      - android-34 | Android TV ARM 64 v8a
      - android-34 | Google TV ARM 64 v8a
      - android-35 | Google APIs ARM 64 v8a
      - android-35 | Google Play ARM 64 v8a
      - android-36 | Android TV ARM 64 v8a
      - android-36 | Google TV ARM 64 v8a
    Android NDK: Not Found
IDEs:
  Android Studio: 2026.1 AI-261.23567.138.2611.15646644
  Xcode:
    version: 26.2/17C52
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.13
    path: /usr/bin/javac
  Ruby:
    version: 2.6.10
    path: /Users/i/.rbenv/shims/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 20.1.0
    wanted: 20.1.0
  react:
    installed: 19.2.3
    wanted: 19.2.3
  react-native:
    installed: 0.86.0
    wanted: 0.86.0
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: Not found
  newArchEnabled: false

Stacktrace or Logs

...

MANDATORY Reproducer

https://github.com/retyui/repo_with_virus_to_steal_corporate_data_so_you_get_fired_and_spend_the_rest_of_your_life_in_prison

Screenshots and Videos