Registry / serialization / jstransformer-babel

jstransformer-babel

library2.1.0jsnpmunverified

A JSTransformer plugin that wraps Babel for transpiling JavaScript. Current version 2.1.0 supports Babel 6 and is in maintenance mode. The package provides a unified interface through the JSTransformer architecture, enabling render, renderFile, and renderString APIs. Unlike direct Babel usage, it filters unsupported options and supports .babelrc configuration when a filename is provided. Key differentiator: it integrates with the JSTransformer ecosystem (used by Pug, etc.) but does not include presets by default, requiring explicit presets like 'es2015' in Babel 6.

serialization

npm install jstransformer-babel

github ↗package ↗

INSTALL

IMPORT

SIG · JSTRANSFORMER-BABE

jstransformer-babel

serializationjavascriptv2.1.0

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.

jstransformer-babel

✓ const babel = require('jstransformer')(require('jstransformer-babel'))

✗ const babel = require('jstransformer-babel')

Must wrap with jstransformer to access render* methods.

render

✓ babel.render(src, { presets: ['env'] })

✗ babel.render(src, { presets: ['es2015'] })

From v2, presets are not default; 'es2015' is outdated; use '@babel/preset-env'.

renderFile

✓ babel.renderFile('input.js', function(err, result) {})

✗ babel.renderFile('input.js', {}, function(err, result) {})

renderFile accepts options as second argument and callback as third.

Transpile modern JS to compatible code using Babel 6 via jstransformer-babel with preset-env.

Debug

Known issues

breakingjstransformer-babel v2 requires explicit presets; no longer defaults to ES2015.

fix

Pass an array of presets (e.g., ['env']) or configure .babelrc.

affects: >=2.0.0

deprecatedjstransformer v1 is being replaced by jstransformer v2 which uses a different API.

fix

Migrate to jstransformer v2 with updated interface.

affects: >=1.0.0 <2.0.0

gotchaThe package only implements 'render'; other methods (renderString, renderFile) are derived but may have edge cases.

fix

Test derived methods thoroughly with your Babel options.

affects: >=1.0.0

gotchaBabel configuration files (.babelrc) only apply when filename is passed to renderFile or renderFileAsync.

fix

Use renderFile* or pass { filename: 'example.js' } to render.

affects: >=2.0.0

Errors

Common errors & fixes

Error: Requires Babel "$BABEL_VERSION", but is loaded with "6.26.3". If you are sure you have a compatible version of Babel, it is likely that you are pulling in different versions of Babel. Try uninstalling all Babel packages and reinstalling them.

Incompatible Babel version or multiple Babel installations.

fix

Install compatible Babel version: npm install @babel/core@^7.0.0 (if jstransformer-babel supports Babel 7) or stick to Babel 6.

Error: Couldn't find preset "env" relative to directory

Preset 'env' is not installed.

fix

npm install @babel/preset-env --save-dev

TypeError: babel.render is not a function

Directly requiring jstransformer-babel without wrapping with jstransformer.

fix

Use: const jstransformer = require('jstransformer'); const babel = jstransformer(require('jstransformer-babel'));

Upgrade

Version history

2.1.0latest on npm

Audit

Dependencies

jstransformerrequiredPeer dependency for JSTransformer interface

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/jstransformers/jstransformer-babel ↗

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