babelify

library10.0.0jsnpmunverified

Babel browserify transform that compiles JavaScript files using Babel during browserify bundling. Current stable version is 10.0.0, released on an as-needed basis. Supports Babel 7 with @babel/core as a peer dependency. Differentiates from other Babel integrations by tight coupling with browserify's transform pipeline, allowing per-file compilation with source maps and custom file extensions. Requires user-supplied presets/plugins for any transformation since Babel 6.

devops

npm install babelify

github ↗package ↗

INSTALL

IMPORT

SIG · BABELIFY

babelify

devopsjavascriptv10.0.0

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.

babelify (default)

✓ import babelify from 'babelify'

✗ const babelify = require('babelify')

ESM import works; CommonJS require also OK, but ESM is modern.

babelify.configure

✓ import { configure } from 'babelify'

✗ const configure = require('babelify').configure

configure is a named export; CommonJS pattern works but named import is cleaner.

transform usage

✓ browserify().transform('babelify', { presets: ['@babel/preset-env'] })

✗ browserify().transform(babelify, { presets: [...] }) // also correct, but string form is more common

Can pass package name string or the require'd transform function.

Shows how to set up babelify with browserify, using configure() and specifying presets for ES6+ and React JSX.

import browserify from 'browserify'; import fs from 'fs'; import babelify from 'babelify'; const b = browserify('./src/index.js'); b.transform(babelify.configure({ presets: ['@babel/preset-env', '@babel/preset-react'], extensions: ['.js', '.jsx'] })); b.bundle() .pipe(fs.createWriteStream('./dist/bundle.js'));

Debug

Known issues

breakingbabelify v10 requires @babel/core (Babel 7) as a peer dependency; v8 used babel-core (Babel 6).

fix

Install @babel/core instead of babel-core. Update presets/plugins to @babel/* scope.

affects: >=10.0.0

breakingIn Babel 6 and later, no plugins are included by default. You must install and configure presets/plugins explicitly.

fix

Install presets like @babel/preset-env and specify them in options.

affects: >=6.0.0

deprecatedbabelify v8 (Babel 6) is no longer maintained; upgrade to v10 with Babel 7.

fix

Upgrade babelify to v10 and switch to @babel/core.

affects: >=8.0.0 <10.0.0

gotchaIf you pass the babelify transform as a function (configure) rather than string, you must ensure it's required correctly. Using bind or .call may cause issues.

fix

Prefer using the string name 'babelify' in transform() to avoid context issues.

affects: *

gotchaThe `ignore` option is a regex that when matched skips compilation; common mistake: using a string instead of RegExp.

fix

Pass a RegExp object, e.g., /node_modules/.

affects: *

Errors

Common errors & fixes

Error: Cannot find module '@babel/core'

@babel/core is a required peer dependency not installed.

fix

Run 'npm install --save-dev @babel/core'

Error: Requires Babel "^7.0.0-0", but was loaded with "6.x.x"

babelify v10 requires Babel 7, but an older babel-core is installed.

fix

Install @babel/core v7 and remove babel-core.

SyntaxError: Unexpected token import (or JSX) - no presets configured

Babel 6+ requires presets to transform modern JS/JSX; none provided.

fix

Add presets like @babel/preset-env and @babel/preset-react to babelify options.

Upgrade

Version history

10.0.0latest on npm

Audit

Dependencies

@babel/corerequiredPeer dependency; Babel 7 core library required at runtime

Agent activity

2 hits · last 30 days

node

Resources

githubhttps://github.com/babel/babelify ↗

packagehttps://www.npmjs.com/package/babelify ↗