rollup-config-pectin

4.0.4 verified Mon Apr 27 auth: no javascript

A Rollup configuration preset for building tree-shakeable JavaScript libraries using conventional file patterns. Version 4.0.4 requires Node >=8.9 and Rollup >=1.12.0. It simplifies setting up Rollup with Babel and ensures proper main/module exports for ESM and CJS. Differentiators: convention over configuration, zero-config unless custom Babel preset options needed, and explicit support for tree-shaking via peer dependencies. Aimed at library authors who want a minimal Rollup setup without manual config.

Common errors

error Error: Could not resolve entry module ↓

cause Missing or incorrect 'input' option or no 'src/index.js' file.

fix

Ensure 'src/index.js' exists or specify correct input path via -i flag or options.

error (!) Plugin typescript: @rollup/plugin-typescript: Could not find source file: 'src/index.ts' ↓

cause The configuration expects a JavaScript file (src/index.js) but only TypeScript files exist.

fix

Rename file to 'src/index.js' or configure rollup-config-pectin with an appropriate plugin for TypeScript.

error Error: You must specify 'main' and 'module' in package.json ↓

cause The preset checks for these fields and throws if missing.

fix

Add both 'main' and 'module' fields to package.json.

Warnings

gotcha The package expects both 'main' and 'module' fields in package.json, otherwise output may be incomplete. ↓

fix Add 'main' and 'module' fields to package.json pointing to your output files.

gotcha If you have a .babelrc, the preset used must accept options (e.g., @babel/preset-env with modules:false), otherwise Rollup's tree-shaking may fail. ↓

fix Ensure your Babel preset configuration is set appropriately (e.g., {modules: false}).

deprecated The package uses the older node:pectin preset for Rollup CLI which may become deprecated in future Rollup versions. ↓

fix Consider using the programmatic API (import default) for future-proofing.

Install

npm install rollup-config-pectin

yarn add rollup-config-pectin

pnpm add rollup-config-pectin

Imports

pectin
wrong
```
const pectin = require('rollup-config-pectin'); module.exports = pectin;
```
correct
```
import pectin from 'rollup-config-pectin'; export default pectin;
```
The package exports a single default configuration object. ESM import is recommended; CommonJS require may still work but is not the primary export.

Quickstart

Shows setup: package.json with main/module, Babel config with modules:false, and using rollup-config-pectin via CLI or programmatic API.

// package.json
{
  "main": "dist/index.cjs.js",
  "module": "dist/index.esm.js"
}

// .babelrc (must accept options)
{
  "presets": [
    ["@babel/preset-env", { "modules": false }]
  ]
}

// rollup.config.js (if using programmatic API)
import pectin from 'rollup-config-pectin';
export default pectin({
  input: 'src/index.js',
  output: {
    dir: 'dist',
    format: ['cjs', 'es']
  }
});

// Or via CLI:
// rollup -c node:pectin -i src/index.js