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# babel-plugin-syntax-hermes-parser
Hermes parser plugin for [Babel](https://babeljs.io/). This plugin switches Babel to use `hermes-parser` instead of the `@babel/parser`. Since Hermes parser uses C++ compiled to WASM it is significantly faster and provides full syntax support for Flow.
## Install
Using npm:
```sh
npm install --save-dev babel-plugin-syntax-hermes-parser
```
or using yarn:
```sh
yarn add babel-plugin-syntax-hermes-parser --dev
```
# Usage
The plugin can be enabled via:
```
// babel.config.json
{
"plugins": ["babel-plugin-syntax-hermes-parser"]
}
```
If parser options need to be provide you can do so via the `parserOpts` config:
```
// babel.config.json
{
"plugins": ["babel-plugin-syntax-hermes-parser"],
"parserOpts": {
"allowReturnOutsideFunction": true
}
}
```