SyntaxError: Invalid RegExp: Invalid escape, js engine: hermes

[Albert-Gao]

Bug Description

a regexp from this lib triggers this error on Hermes(React native).

// node_modules/zod-to-json-schema/dist/cjs/parsers/string.js
exports.zodPatterns = {
  // remove other codes
  emoji: RegExp("^(\\p{Extended_Pictographic}|\\p{Emoji_Component})+$", "u"),
};

• "expo": "~51.0.21",
• "react-native": "0.74.3"

Steps To Reproduce

a repo to reproduce it.

https://github.com/Albert-Gao/rn-invalid-regexp

The Expected Behavior

It should work. (Works on JSC)

More

It seems to be a Herms issue according to this: facebook/hermes#1027
So I first created an issue on the Hermes side: facebook/hermes#1460
But if it is really hard to solve on the engine side, I wonder is there a way we can tweak this regexp to make it compatible with Hermes?

[Albert-Gao]

seems it will be solved in the future version of Hermes, so close this one :)

[StefanTerdell]

@Albert-Gao This is now avoided with lazy-loading. Released in 3.23.2.

[Albert-Gao]

@StefanTerdell thanks, i tested, works like a charm with Hermes now :)