mu-babel

0.0.2 verified Fri May 01 auth: no javascript deprecated

An unofficial fork/package of Babel (formerly 6to5) that transpiles ES6/ES2015 to readable ES5 with source maps. Version 0.0.2 is an early snapshot from the Babel v5 era (circa 2015), long superseded by modern Babel versions. This package is not maintained and should not be used in new projects. Key differentiator: claims readable output, but functionally identical to early Babel releases. Users should prefer the official babel package at v7+.

Common errors

error Cannot find module 'mu-babel' ↓

cause Package may not be installed or is misspelled.

fix

Run: npm install mu-babel

error mu-babel: Cannot read property 'transform' of undefined ↓

cause Importing the module incorrectly (e.g., using named import for transform).

fix

Use: import babel from 'mu-babel'; then babel.transform(...)

Warnings

breaking Package mu-babel is an unmaintained fork of Babel v5.x. It lacks support for modern JavaScript (ES2016+), plug-in system, and bug fixes. ↓

fix Migrate to the official babel package: npm uninstall mu-babel && npm install --save-dev @babel/core @babel/cli @babel/preset-env

deprecated The API mirror is Babel v5, which is obsolete. Methods like babel.transform() differ from @babel/core. ↓

fix Use @babel/core and consult its documentation for API changes.

gotcha The package name mu-babel is easily confused with the official babel packages. Installing it may lead to missing security patches and incompatibilities. ↓

fix Always install @babel/core (or babel-cli) from the official scoped package.

Install

npm install mu-babel

yarn add mu-babel

pnpm add mu-babel

Imports

mu-babel
wrong
```
const babel = require('mu-babel')
```
correct
```
import babel from 'mu-babel'
```
Package exposes a default export similar to Babel v5. Usage from mu-babel is identical to early babel packages.
babel.transform
wrong
```
import { transform } from 'mu-babel'
```
correct
```
import babel from 'mu-babel'; babel.transform(code, options)
```
The package does not export transform as a named export; it is a method on the default export.

babel.version

wrong

import { version } from 'mu-babel'

correct

import babel from 'mu-babel'; console.log(babel.version)

Version property on the default export.

Quickstart

Shows how to transpile a simple const declaration using mu-babel with source maps.

const babel = require('mu-babel');
const result = babel.transform('const x = 1;', { sourceMaps: true });
console.log(result.code);
// 'use strict';
// var x = 1;