Registry / http-networking / babel-plugin-transform-modules-requirejs-babel

babel-plugin-transform-modules-requirejs-babel

library0.2.0jsnpmunverified

A Babel plugin for transforming ESM modules to AMD modules, designed to work with RequireJS and the requirejs-babel7 plugin. Current stable version 0.2.0 (May 2025). It replaces the combination of @babel/plugin-transform-modules-amd, babel-plugin-amd-checker, babel-plugin-amd-default-export, and babel-plugin-module-resolver-standalone, solving limitations around mixing ESM and AMD modules at any dependency level and handling default exports without wrapping. Supports customising module path resolution via a resolvePath function. Infrequent releases; maintained by a single author.

http-networking

npm install babel-plugin-transform-modules-requirejs-babel

github ↗package ↗

INSTALL

IMPORT

SIG · BABEL-PLUGIN-TRANS

babel-plugin-transform-modules-requirejs-babel

http-networkingjavascriptv0.2.0

Install

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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.

default

✓ module.exports = { plugins: ['transform-modules-requirejs-babel'] }

✗ import transformModulesRequirejsBabel from 'babel-plugin-transform-modules-requirejs-babel'

The plugin is used as a string in Babel config, not imported directly. Use the plugin name in .babelrc or babel.config.js.

resolvePath

✓ ['transform-modules-requirejs-babel', { resolvePath: (source, currentFile) => 'es6!' + source }]

✗ plugins: [['babel-plugin-transform-modules-requirejs-babel', { resolvePath: 'es6!' }]]

resolvePath must be a function, not a string. It receives sourcePath and currentFile arguments.

Plugin as CommonJS require

✓ const plugin = require('babel-plugin-transform-modules-requirejs-babel'); module.exports = { plugins: [plugin] }

✗ const plugin = require('babel-plugin-transform-modules-requirejs-babel').default

This plugin is CJS-compatible. Using .default would be incorrect as it's not an ESM default export.

Shows basic Babel configuration with the plugin, optional resolvePath customization, and expected AMD output from an ESM module.

// Install: npm i -D babel-plugin-transform-modules-requirejs-babel // .babelrc or babel.config.js module.exports = { presets: [], plugins: [ // Basic usage: no options 'transform-modules-requirejs-babel' ] }; // Optionally with custom resolvePath: // plugins: [ // [ // 'transform-modules-requirejs-babel', // { // resolvePath(sourcePath, currentFile) { // if (sourcePath.indexOf('!') < 0 && sourcePath !== 'require' && // sourcePath !== 'module' && sourcePath !== 'exports') { // return 'es6!' + sourcePath; // } // } // } // ] // ] // Example ESM input 'src/main.js': // import { helper } from './helper'; // export default function main() { helper(); } // After Babel transformation (AMD output): // define('src/main', ['./helper'], function (_helper) { // 'use strict'; // function main() { (0, _helper.helper)(); } // return main; // });

Debug

Known issues

gotchaThe plugin assumes that AMD modules without dependencies (empty define) are not mixed with ESM; if you have AMD modules with no deps, they may be transformed incorrectly.

fix

Upgrade to >=0.0.4 which fixes recognition of AMD modules without dependencies.

affects: <0.0.4

gotchaResolvePath function must handle the three pseudo-modules 'require', 'module', 'exports' explicitly to avoid prefixing them.

fix

Always check sourcePath against 'require', 'module', 'exports' in resolvePath, as shown in the example.

affects: >=0.0.0

deprecatedThis plugin replaces a combination of four other plugins; if you are using those, migrate to this single plugin to avoid conflicts and missing features.

fix

Remove '@babel/plugin-transform-modules-amd', 'babel-plugin-amd-checker', 'babel-plugin-amd-default-export', 'babel-plugin-module-resolver-standalone' and use this plugin instead.

affects: >=0.1.0

breakingThe plugin now transforms default exports without wrapping in { default: ... } to keep compatibility with RequireJS. This may break code expecting the default property wrapper.

fix

Update consuming AMD modules to treat direct exports as the default value; if you need the wrapper, set the addDefaultProperty option (not yet implemented) or use babel-plugin-amd-default-export with addDefaultProperty: true before this plugin.

affects: >=0.0.0

Errors

Common errors & fixes

Error: Module 'babel-plugin-transform-modules-requirejs-babel' not found

The plugin is not installed or is missing from node_modules.

fix

Run `npm install -D babel-plugin-transform-modules-requirejs-babel` to install it as a dev dependency.

TypeError: resolvePath is not a function

The resolvePath option was provided as a string instead of a function.

fix

Provide a function: `resolvePath(sourcePath, currentFile) { ... }` not a string like 'es6!source'.

SyntaxError: Unexpected token 'export'

Babel is not configured to transpile ES modules; the plugin may not be applied.

fix

Ensure the plugin is listed in your Babel config under 'plugins' (not 'presets') and that Babel is running on the file. Example: `plugins: ['transform-modules-requirejs-babel']`.

ReferenceError: define is not defined

The AMD module output expects RequireJS to be loaded in the browser, but RequireJS is not present.

fix

Include RequireJS script before your compiled modules. Example: `<script src='require.js' data-main='main'></script>`.

Upgrade

Version history

0.2.0latest on npm

Audit

Dependencies

@babel/corerequiredBabel plugin requires @babel/core to function; peer dependency.

requirejsoptionalRuntime dependency for loading AMD modules in the browser; required for execution.

Agent activity

17 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/prantlf/babel-plugin-transform-modules-requirejs-babel ↗

packagehttps://www.npmjs.com/package/babel-plugin-transform-modules-requirejs-babel ↗