@thunderal/rollup-preprocess-plugin

A Rollup plugin which allows you to tun build time code and include it's result to output bundle

Requirements

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

Install

Using npm:

npm install --save-dev @thunderal/rollup-preprocess-plugin

Using yarn:

yarn add -D @thunderal/rollup-preprocess-plugin

Usage

1. Create a rollup.config.js and import the plugin:

   import preprocess from '@thunderal/rollup-preprocess-plugin'
      
   const bundle = await rollup.rollup({
     input: 'src/index.js',
     plugins: [
       preprocess(),
     ],
   })

2. Create preprocessing file (ex hash-output.preprocess.mjs):

   import crypto from 'node:crypto'
      
   export default async function () {   
     const hash = crypto.createHash('sha512')
       .update('super secret string. will not appear in result bundle')
       .digest()
       .toString('hex')
        
     return `export const myHash = '${hash}';`
   }

3. Import generator file from another module (ex index.mjs):

   import {myHash} from 'hash-output.preprocess.mjs'
      
   console.log(myHash)

4. Run rollup. Output will be:

   const myHash = "66631b816a5f33d6f...";
      
   console.log(myHash)