rollup-babel

0.6.3 verified Sat Apr 25 auth: no javascript deprecated

Deprecated Rollup plugin for Babel integration. Version 0.6.3 is the last release. It aimed to combine Rollup's bundling with Babel's transpilation to avoid duplicate helpers and improve build speed. Superseded by rollup-plugin-babel, which provides proper caching, sourcemap support, and better Rollup hooks. Not recommended for new projects.

Common errors

error Error: Cannot find module 'rollup' ↓

cause rollup is a peer dependency and must be installed separately.

fix

Run: npm install --save-dev rollup

error Error: Cannot find module 'rollup-babel' ↓

cause Package not installed or deprecated package name used incorrectly.

fix

Install: npm install rollup-babel (deprecated); better to install rollup-plugin-babel instead.

error TypeError: rollup is not a function ↓

cause Incorrect import method; package must be used with require.

fix

Use const rollup = require('rollup-babel'); instead of import.

Warnings

deprecated rollup-babel is deprecated. Use rollup-plugin-babel instead. ↓

fix Replace with rollup-plugin-babel: npm install --save-dev rollup-plugin-babel

breaking No caching mechanism; every build re-transpiles all files. ↓

fix Migrate to rollup-plugin-babel which supports caching.

gotcha Sourcemaps are not supported; Babel-generated sourcemaps are discarded. ↓

fix Use rollup-plugin-babel for sourcemap support.

gotcha CLI command is 'rollupbabel', not 'rollup-babel'. ↓

fix Use 'rollupbabel' on the command line.

Install

npm install rollup-babel

yarn add rollup-babel

pnpm add rollup-babel

Imports

default

wrong

import rollup from 'rollup-babel';

correct

const rollup = require('rollup-babel');

Package does not support ESM imports; use CommonJS require.

rollup
wrong
```
const { rollup } = require('rollup');
```
correct
```
const rollup = require('rollup-babel').rollup;
```
Access the internal rollup function via the package's export; otherwise you'd get the upstream Rollup package.

VERSION

wrong

import { VERSION } from 'rollup-babel';

correct

const VERSION = require('rollup-babel/package.json').version;

No VERSION export; read from package.json.

Quickstart

Basic usage of rollup-babel: require the package and use it like Rollup with Babel integration.

const rollup = require('rollup-babel');
rollup({
  input: 'src/main.js',
  plugins: []
}).then(bundle => {
  bundle.write({
    format: 'cjs',
    file: 'dist/bundle.js'
  });
});