Registry / devops / babel-plugin-transform-dev

babel-plugin-transform-dev

library2.0.1jsnpmunverified

Babel v6 plugin that replaces all occurrences of __DEV__ with the evaluation of "production" !== process.env.NODE_ENV. Currently at version 2.0.1, with no recent updates. It simplifies stripping development-only code from production bundles. Unlike similar plugins, it evaluates the expression at build time, replacing __DEV__ with a boolean literal. Limited to Babel v6; unmaintained since 2018. Use @babel/plugin-transform-dotenv or custom plugins for modern Babel.

devops

npm install babel-plugin-transform-dev

github ↗package ↗

INSTALL

IMPORT

SIG · BABEL-PLUGIN-TRANS

babel-plugin-transform-dev

devopsjavascriptv2.0.1

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.

default

✓ import plugin from 'babel-plugin-transform-dev'

✗ const plugin = require('babel-plugin-transform-dev')

ESM import works; require also valid as this package does not enforce ESM-only.

N/A (Plugin Usage)

✓ module.exports = { plugins: ['transform-dev'] }

✗ module.exports = { plugins: ['babel-plugin-transform-dev'] }

Babel resolves plugin names automatically; prefix not needed in .babelrc.

N/A (Plugin Options)

✓ module.exports = { plugins: [['transform-dev', { evaluate: false }]] }

✗ module.exports = { plugins: ['transform-dev'], options: { evaluate: false } }

Options are passed as array elements; separate 'options' key is invalid.

Demonstrates replacing __DEV__ with a boolean based on environment variable.

// install: npm install babel-plugin-transform-dev // .babelrc { "plugins": ["transform-dev"] } // input.js const isDev = __DEV__; if (__DEV__) { console.log('dev only'); } // output (with NODE_ENV=production) const isDev = false; if (false) { console.log('dev only'); }

Debug

Known issues

breakingPackage is designed for Babel v6 only; does not work with Babel v7+.

fix

Use @babel/plugin-transform-dev or a custom plugin for Babel v7+.

affects: >=2.0.1

deprecatedLast release 2018; no active maintenance or security updates.

fix

Consider alternatives like @babel/plugin-transform-dotenv or custom babel macros.

affects: >=0.0.0

gotchaAssumes process.env.NODE_ENV is set; otherwise __DEV__ is always true.

fix

Ensure your build system defines NODE_ENV (e.g., 'production' via webpack DefinePlugin).

affects: >=0.0.0

Errors

Common errors & fixes

Plugin/transform-dev is not a valid plugin

Using with Babel v7+ which does not support this plugin.

fix

Switch to @babel/plugin-transform-dev or another alternative.

ReferenceError: __DEV__ is not defined

Plugin did not transform __DEV__ because it wasn't applied.

fix

Verify plugin is included in .babelrc and Babel is running correctly.

TypeError: Cannot read property 'evaluate' of undefined

Incorrect plugin configuration syntax in .babelrc.

fix

Use array syntax: ['transform-dev', { evaluate: false }].

Upgrade

Version history

2.0.1latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/martinandert/babel-plugin-transform-dev ↗

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