named-exports-db

0.1.6 verified Mon Apr 27 auth: no javascript maintenance

A database of packages that require named exports when bundled with Rollup's @rollup/plugin-commonjs. It lists packages that export CommonJS modules where named exports cannot be statically analyzed, necessitating explicit configuration. Version 0.1.6 is the latest and only stable release; the package is largely a reference list with no active development. Differentiator: serves as a community-maintained lookup for Rollup bundling issues, unlike alternatives that are runtime-based or plugin-specific.

Common errors

error Could not determine named exports for module 'some-package' ↓

cause The bundle contains a CommonJS module that cannot be statically analyzed.

fix

Add the package and its exports to the 'namedExports' option in @rollup/plugin-commonjs, using data from named-exports-db.

error Error: Cannot find module 'named-exports-db' ↓

cause Package not installed or not found in node_modules.

fix

Run 'npm install named-exports-db' or 'yarn add named-exports-db'.

Warnings

breaking The database may be incomplete or outdated; always verify with actual bundle analysis. ↓

fix Use tools like https://rollupjs.org/guide/en/#rollupplugin-commonjs to detect missing named exports.

gotcha The package is not a substitute for understanding CommonJS interop; entries may change between versions without notice. ↓

fix Pin version and test after updates.

deprecated No active maintenance; the repository may be archived. Newer Rollup plugins handle some cases better. ↓

fix Consider using @rollup/plugin-commonjs with 'requireReturnsDefault' option or newer bundlers.

Install

npm install named-exports-db

yarn add named-exports-db

pnpm add named-exports-db

Imports

namedExportsDb
wrong
```
const namedExportsDb = require('named-exports-db')
```
correct
```
import namedExportsDb from 'named-exports-db'
```
Package provides a default export (a Map-like object). CommonJS require works but ESM import is recommended for Rollup users.
getNamedExports
wrong
```
const { getNamedExports } = require('named-exports-db')
```
correct
```
import { getNamedExports } from 'named-exports-db'
```
Named export available; the package exports both a default (the database) and named helpers. CommonJS destructuring works but may confuse bundlers.

wrong

import db from 'named-exports-db'; const { db } = db;

correct

import { db } from 'named-exports-db'

Alternate named export for the database object. Avoid conflating with default export.

Quickstart

Shows how to lookup a package's named exports and integrate with Rollup's commonjs plugin.

import { getNamedExports, db } from 'named-exports-db';

// Check if a package is in the database
const pkgName = 'some-commonjs-package';
if (db.has(pkgName)) {
  const exports = getNamedExports(pkgName);
  console.log(`Named exports for ${pkgName}:`, exports);
} else {
  console.log(`${pkgName} not found. You may need to manually configure named exports in @rollup/plugin-commonjs.`);
}

// Example for Rollup configuration
// rollup.config.js
// import commonjs from '@rollup/plugin-commonjs';
// export default {
//   plugins: [commonjs({ namedExports: { [pkgName]: exports } })]
// };