prettier-plugin-hermes-parser

prettier-plugin-hermes-parser

Hermes parser plugin for Prettier. This plugin enables Prettier to use hermes-parser as it's parser. Since Hermes parser uses C++ compiled to WASM it is significantly faster than alternatives such as flow or babel-flow by as much as 10x.

Usage

Prettier will automatically load this plugin if you install it in the same node_modules directory where Prettier is located.

More details on using Prettier plugins: https://prettier.io/docs/en/plugins.html#using-plugins

To then use the parser you will need to instruct Prettier to use hermes as the parser for your required files:

// .prettierrc
{
  "overrides": [
    {
      "files": ["*.js", "*.jsx", "*.flow"],
      "options": {
        "parser": "hermes"
      }
    }
  ]
}

More details on configuring Prettier parsers: https://prettier.io/docs/en/configuration.html#setting-the-parserdocsenoptionshtmlparser-option