Registry / serialization / babel-standalone

babel-standalone

library6.26.0jsnpmunverified

babel-standalone provides a standalone build of Babel (v6.26.0) for use in non-Node.js environments, primarily browsers. It bundles all standard Babel plugins and presets, including an optional babili (babel-minify) build. Unlike the Babel CLI or module-based usage, this package requires no build step — it exposes a global Babel object and can automatically transpile script tags with type="text/babel" or "text/jsx". It is ideal for REPLs, JSFiddle-like sites, or embedding JavaScript scripting in apps. Note that this is based on Babel 6; Babel 7+ has its own @babel/standalone package with a different API.

serialization

npm install babel-standalone

github ↗package ↗

INSTALL

IMPORT

SIG · BABEL-STANDALONE

babel-standalone

serializationjavascriptv6.26.0

Install

—

Import

—

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.

Babel

✓ <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>

✗ const Babel = require('babel-standalone')

This package is intended for browsers and adds Babel as a global. In Node.js, use @babel/core instead. For ESM imports in modern bundlers, consider @babel/standalone.

transform

✓ Babel.transform(code, options)

✗ Babel.transform(code)

The transform method is called on the global Babel object. Options must include presets or plugins; omitting them results in no transformation.

registerPlugin

✓ Babel.registerPlugin('pluginName', pluginFunction)

Registers a custom plugin for use in subsequent transforms. The plugin name is then used in presets/plugins options. Available in v6.22+.

Loads babel-standalone from CDN and uses inline script tag with type text/babel to automatically transpile ES2015 arrow function.

<!DOCTYPE html> <html> <body> <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script> <script type="text/babel"> const getMessage = () => "Hello World"; document.write(getMessage()); </script> </body> </html>

Debug

Known issues

deprecatedbabel-standalone is based on Babel 6, which is deprecated in favor of Babel 7+. Use @babel/standalone for newer features and security updates.

fix

Switch to @babel/standalone. Update script source to https://unpkg.com/@babel/standalone/babel.min.js and adjust API usage (e.g., Babel.transform -> Babel.transformSync).

affects: *

breakingIn v6.24.0, the automatic execution of script tags with type text/babel was fixed to work with async transforms. Users relying on synchronous behavior may break.

fix

Ensure code inside script tags handles asynchronous execution if needed, or switch to explicit Babel.transformSync.

affects: >=6.24.0

gotchaThe package does not load .babelrc files; all presets/plugins must be specified inline via data-attributes or in the transform options.

fix

Specify presets in the script tag: <script type="text/babel" data-presets="es2015"> or in Babel.transform({presets: ['es2015']}).

affects: *

gotchaScript tags with external src attribute may not work as expected in older browsers; XHR fallback might be needed.

fix

Upgrade to v6.24.0+ or use inline scripts only.

affects: <6.24.0

Errors

Common errors & fixes

Babel is not defined

Library not loaded or loaded after script calling Babel.

fix

Load babel-standalone script before any script that references Babel. Ensure the URL is correct: <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>

Uncaught TypeError: Cannot read property 'transform' of undefined

Babel is not loaded (likely due to network issue or wrong CDN URL).

fix

Verify the CDN URL or download the file and host locally. Use a reliable CDN like unpkg or cdnjs.

Module build failed: Error: Couldn't find preset "es2015" relative to directory

Preset not specified correctly; babel-standalone does not read .babelrc.

fix

Pass preset in options: Babel.transform(input, { presets: ['es2015'] }) or use data-presets="es2015" in script tags.

Upgrade

Version history

6.26.0latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

16 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/Daniel15/babel-standalone ↗

packagehttps://www.npmjs.com/package/babel-standalone ↗