#910·hermes

Intl supportedValuesOf crashes

Author: philipheinserCreated Feb 9, 2023Updated Aug 16, 2026
Labelsenhancement

Bug Description

Having Intl.supportedValuesOf('timeZone') in your code base crashes since supportedValuesOf is not a function.

  • I have run gradle clean and confirmed this bug does not occur with JSC

Hermes version: the one coming with rn 0.71.2 React Native version (if any): 0.71.2 OS version (if any): android Platform (most likely one of arm64-v8a, armeabi-v7a, x86, x86_64):

Steps To Reproduce

add Intl.supportedValuesOf('timeZone') to a react native app and run on android with Hermes enabled.

code example:

The Expected Behavior

returning a array of supported timezone strings like jsc.