README

Rollup plugin to prepend modules

A Rollup plugin which adds import modules to input entry

Requirements

This plugin requires an LTS Node version (v14.15.0+) and Rollup v1.20.0+.

Install

Using npm:

npm install @piotr-cz/rollup-plugin-prepend-modules --save-dev

Usage

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

import prependModules from '@piotr-cz/rollup-plugin-prepend-modules';

export default {
  input: 'src/index.js',
  output: {
    dir: 'output',
    format: 'cjs'
  },
  plugins: [
    // Use plugin only in development environment
    process.env.NODE_ENV === 'development' && prependModules({
      modules: ['preact/debug'],
      sourceMap: true
    })
  ]
};

Then call rollup either via the CLI or the API:

# Optionally set environment to development
npx rollup --config --environment NODE_ENV:development

The configuration above will add import 'preact/debug'; to input entry (src/index.js in this case).

Options

`modules`

type: string[]
default: []

An array of modules to prepend

`sourceMap`

type: boolean
default: true

If false, skips source map generation

@piotr-cz/rollup-plugin-prepend-modules

Usage no npm install needed!