[ Package conformance ]

Expo SDK · >=14.0.0

expo-constants

package-local wrapper registers only ExponentConstants; upstream expo-constants JS computes the public Constants object unchanged.

95%

API coverage

← iOS 26.4|rnx →

expo-constantsExpo Constantsexpo-constants across six proof stages: runtime identity, device metadata, Expo versions, iOS platform record, config manifests, and WebView user agent.

Diff0.16%

DeviceiPhone 16

OracleiOS 26.4

CapturedAug 20, 2026

iOS 26.4rnxDiff

Expo ConstantsiOS 26.4

Working (12)

ExponentConstants native module constants matching the bare iOS dictionary: sessionIdexecutionEnvironmentappOwnershipdebugModedeviceNameisHeadlessstatusBarHeightsystemFontsplatform.ios.buildNumberexpoConfig/manifest from the resolved app configgetWebViewUserAgentAsyncand the AppOwnership / ExecutionEnvironment / UserInterfaceIdiom enums from upstream JS

Missing (10)

real binary-derived embedded app configExpo Updates manifest2expoGoConfig/easConfigphysical-device status bar and system font enumeration. the Expo Go fields deviceYearClassexpoVersionexpoRuntimeVersionexperienceUrlisDevicelinkingUri and the deprecated platform.ios model/platform/systemVersion/userInterfaceIdiom are intentionally absentmatching a bare iOS app where the native constants dictionary never publishes them; read device metadata from expo-device instead