babel-preset-evergreen

babel-preset-evergreen

A babel preset for popular javascript syntaxes.

This preset can transform:

• ECMAScript 2021 syntax
• Class static properties

Installation

npm install babel-preset-evergreen --save-dev

Usage

// example: babel.config.json
{
  "presets": [
    [
      "evergreen",
      {
        "polyfill": "global",
        "targets": "chrome >= 60"
      }
    ]
  ]
}

Options

polyfill

• type: [ false, 'global', 'pure' ]
• default: false

How babel handles polyfills. pure is an experimental option.

References: https://github.com/babel/babel/issues/10008

Install core-js@3 as a top-level dependency when specifying 'global' or 'pure'.

npm install core-js@3 --save

targets

• type: string | string[] | object
• default: browserslist.loadConfig() || browserslist.defaults

Describes the environments you support/target for your project.