ReferenceError: Property 'Proxy' doesn't exist, js engine: hermes

Description

i was trying to play with moti… when i import moti the app gives me this error.It only gives me this error when i use moti…i had opened issue there he said its related to reanimted.

Steps To Reproduce

import React, { useReducer } from 'react'
import { StyleSheet, Pressable } from 'react-native'
import { View } from 'moti'

function Shape() {
  return (
    <View
      from={{
        opacity: 0,
        scale: 0.5,
      }}
      animate={{
        opacity: 1,
        scale: 1,
      }}
      transition={{
        type: 'timing',
      }}
      style={styles.shape}
    />
  )
}

export default function HelloWorld() {
  const [visible, toggle] = useReducer((s) => !s, true)

  return (
    <Pressable onPress={toggle} style={styles.container}>
      {visible && <Shape />}
    </Pressable>
  )
}

const styles = StyleSheet.create({
  shape: {
    justifyContent: 'center',
    height: 250,
    width: 250,
    borderRadius: 25,
    marginRight: 10,
    backgroundColor: 'white',
  },
  container: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center',
    flexDirection: 'row',
    backgroundColor: '#9c1aff',
  },
})

Package versions

“@react-native-community/masked-view”: “^0.1.10”, “@react-navigation/native”: “^5.9.2”, “@react-navigation/stack”: “^5.14.2”, “moti”: “^0.4.1”, “react”: “16.13.1”, “react-native”: “0.63.4”, “react-native-bootsplash”: “^3.1.3”, “react-native-gesture-handler”: “^1.9.0”, “react-native-reanimated”: “2.0.0-rc.0”, “react-native-safe-area-context”: “^3.1.9”, “react-native-screens”: “^2.17.1”

[nandorojo]

Turns out the solution is

npm install hermes-engine@v0.5.2-rc1

Or, upgrade to RN 0.64.x and Hermès 0.7.

Hermès v0.5.2-rc1, which targets RN 0.63, enables Proxy by default. Same goes for 0.7 on 64.

[nandorojo]

Hey, creator of Moti here. It would appear that Framer Motion uses Proxy, and Moti imports framer-motion.

@jakub-gonet is there a polyfill or any alternative that you know of, or should I just hide this feature on Android devices?