esm-shim

@rollup/plugin-esm-shim

🍣 A Rollup plugin to replace CJS global variables within esm output bundles.

The list of global variables that are shimmed are:

• __filename: This variable corresponds to the file path of the generated bundle file.
• __dirname: This variable corresponds to the folder path of the created bundle file.
• require: Corresponds to a function to import modules in a synchronous way.

Requirements

This plugin requires an LTS Node version (v14.0.0+) and Rollup v2.0+.

Install

Using npm:

npm install @rollup/plugin-esm-shim --save-dev

Usage

Create a rollup.config.js configuration file and import the plugin:

import esmShim from '@rollup/plugin-esm-shim';

export default {
  input: 'src/index.js',
  output: {
    dir: 'output',
    format: 'cjs'
  },
  plugins: [esmShim()]
};

Then call rollup either via the CLI or the API.

Meta

CONTRIBUTING

LICENSE (MIT)

Portions of this code were used with permission from unbuild. unbuild LICENSE