Registry / web-framework / babel-plugin-add-module-exports

babel-plugin-add-module-exports

library1.0.4jsnpmunverified

This Babel plugin restores the pre-Babel 6 behavior where a default export is also assigned to `module.exports`, allowing `require()` to return the default value directly without the `.default` property. Version 1.0.4 is the latest stable release, with no active development. It works only with CommonJS/UMD module output (requires `modules` to be set to `'commonjs'` or `'umd'`). Unlike alternatives, it only adds `module.exports` when there is a single default export, preserving named exports.

web-framework

npm install babel-plugin-add-module-exports

github ↗package ↗

INSTALL

IMPORT

SIG · BABEL-PLUGIN-ADD-M

babel-plugin-add-module-exports

web-frameworkjavascriptv1.0.4

Install

—

Import

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Disk

—

Pass rate

0/ 6

Env Coverage0 / 6

glibc

18–22

musl

18–22

Install & Compatibility

Where this runs

tested against v? · npm install

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

node 18–226 runs

build_error

glibc

node 18–226 runs

build_error

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

add-module-exports

✓ import addModuleExports from 'babel-plugin-add-module-exports' (in .babelrc or Babel config)

✗ const addModuleExports = require('babel-plugin-add-module-exports') (only for programmatic use, not config)

Typically used as a string in Babel config: 'plugins': ['add-module-exports']

addDefaultProperty

✓ In .babelrc: { 'plugins': [['add-module-exports', { 'addDefaultProperty': true }]] }

✗ Passing options as a separate object without the plugin name array

Optional option to also set `module.exports.default` for backward compatibility with code using `.default`.

Shows Babel configuration and expected transformation of a default export to also set module.exports.

// Add plugin to Babel config (e.g., .babelrc, babel.config.js). // Note: This plugin only works when @babel/preset-env or babel-preset-env is used with CommonJS modules. { "presets": ["@babel/preset-env"], "plugins": ["add-module-exports"] } // With options: { "presets": ["@babel/preset-env"], "plugins": [ ["add-module-exports", { "addDefaultProperty": true }] ] } // Example source file (test.js): export default function sayHello() { return 'Hello'; } // After transformation: Object.defineProperty(exports, '__esModule', { value: true }); exports.default = sayHello; module.exports = exports['default']; // added by this plugin // Now require('./test') returns the function directly, not an object with .default.

Debug

Known issues

gotchaOnly works when @babel/preset-env (or env) is used with modules: 'commonjs' or 'umd'. Does nothing with modules: false, amd, or systemjs.

fix

Set `modules` option in preset-env to 'commonjs' or 'umd'.

affects: >=1.0.0

gotchaDoes not assign 'module.exports' if there are named exports in addition to the default export. Only triggers on a sole default export.

fix

If you have named exports, this plugin will not change module.exports. Use other approaches or restructure exports.

affects: >=1.0.0

deprecatedPlugin is in maintenance mode with no active development. Consider alternatives like setting `@babel/plugin-transform-modules-commonjs` loose mode.

fix

Switch to using `@babel/plugin-transform-modules-commonjs` with `loose: true` which achieves similar behavior.

affects: >=1.0.0

gotchaIf used with `addDefaultProperty: true`, the default export is both assigned to `module.exports` and also kept as `module.exports.default`. This may cause unexpected behavior if the default export is an object with a 'default' key.

fix

Ensure the default export is not an object with its own 'default' property, or avoid addDefaultProperty.

affects: >=1.0.0

Errors

Common errors & fixes

Error: Cannot find module 'babel-plugin-add-module-exports'

Plugin not installed or not listed as a devDependency.

fix

Run `npm install babel-plugin-add-module-exports --save-dev` or `yarn add -D babel-plugin-add-module-exports`.

Module build failed: Error: [BABEL] unknown plugin "add-module-exports"

Babel version mismatch (e.g., Babel 7 vs 6). This plugin works with Babel 6 and 7.

fix

Ensure you are using Babel 6 or 7. For Babel 7, use preset-env as @babel/preset-env.

TypeError: Cannot read property 'default' of undefined

Default export is not assigned to module.exports because the plugin requires CommonJS modules to be enabled.

fix

Set `modules: 'commonjs'` in @babel/preset-env options.

Warning: add-module-exports plugin only works when exporting using `export default`.

The source file uses named exports or no default export.

fix

Ensure the file has a single `export default` statement.

Upgrade

Version history

1.0.4latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

16 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/59naga/babel-plugin-add-module-exports ↗

packagehttps://www.npmjs.com/package/babel-plugin-add-module-exports ↗