babel-plugin-syntax-flow-parser

Hermes parser plugin for Babel. This plugin switches Babel to use flow-parser instead of the @babel/parser. The Flow parser uses Rust compiled to WASM for full Flow syntax support.

Install

Using npm:

npm install --save-dev babel-plugin-syntax-flow-parser

or using yarn:

yarn add babel-plugin-syntax-flow-parser --dev

Usage

The plugin can be enabled via:

// babel.config.json
{
  "plugins": ["babel-plugin-syntax-flow-parser"]
}

If parser options need to be provide you can do so via the parserOpts config:

// babel.config.json
{
  "plugins": ["babel-plugin-syntax-flow-parser"],
  "parserOpts": {
    "allowReturnOutsideFunction": true
  }
}