Registry / devops / babel-plugin-transform-dead-code-elimination

babel-plugin-transform-dead-code-elimination

library2.2.3jsnpmunverified

A Babel 6 plugin that eliminates dead (unreachable) code, including unused variables, unreachable statements, and dead logical operators. It is a fork of babel-plugin-dead-code-elimination with additional fixes and features. Current stable version is v2.2.3, with releases in 2016 (last release 2.2.3). It is specific to Babel 6 and not compatible with Babel 7+. Key differentiators: supports experimental inlining (but warns it may break code), handles hoisted async functions correctly, and properly eliminates repeated var/function declarations.

devops

npm install babel-plugin-transform-dead-code-elimination

github ↗package ↗

INSTALL

IMPORT

SIG · BABEL-PLUGIN-TRANS

babel-plugin-transform-dead-code-elimination

devopsjavascriptv2.2.3

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-dead-code-elimination'

✗ const plugin = require('babel-plugin-transform-dead-code-elimination')

This is a Babel plugin, not commonly imported directly; typically used in .babelrc or babel.config.js as a string.

Demonstrates using the plugin to eliminate dead code (unreachable branch and unused variable).

// .babelrc { "plugins": [ "transform-dead-code-elimination" ] } // Input: dead code function example() { if (false) { return 1; } return 2; var x = 3; // unused } // Output: dead code removed function example() { return 2; }

Debug

Known issues

gotchaexperimentalInlining option can break code; use with caution.

fix

Avoid setting experimentalInlining: true unless you thoroughly test output.

affects: >=2.0.0

deprecatedThis plugin is for Babel 6 only. Not compatible with Babel 7+.

fix

Use @babel/plugin-transform-dead-code-elimination or equivalent for Babel 7.

affects: >=2.0.0

gotchaPlugin may incorrectly eliminate hoisted async functions if transform-async-to-generator is not used.

fix

Upgrade to version 2.2.1 or later.

affects: <2.2.1

Errors

Common errors & fixes

Error: Plugin transform-dead-code-elimination requires a Babel 6 version

Using plugin with Babel 7 or later.

fix

Use @babel/plugin-transform-dead-code-elimination for Babel 7.

AssertionError [ERR_ASSERTION]: false == true

Bug with repeated var/function declarations in older versions.

fix

Upgrade to version 2.2.2 or later.

Upgrade

Version history

2.2.3latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/erikdesjardins/babel-plugin-transform-dead-code-elimination ↗

packagehttps://www.npmjs.com/package/babel-plugin-transform-dead-code-elimination ↗