Registry / serialization / babel-plugin-transform-builtin-extend

babel-plugin-transform-builtin-extend

library1.1.2jsnpmunverified

A Babel 6 plugin that enables extending built-in JavaScript types like Error and Array, which require special handling due to their native constructor behavior. It uses static analysis to detect class extensions of globals you specify, optionally with an approximate mode for IE <= 10. This plugin is a specialized tool for a now-legacy Babel version (6.x) and has been superseded by native class support in modern JavaScript and Babel 7+. No active maintenance since 2016.

serialization

npm install babel-plugin-transform-builtin-extend

github ↗package ↗

INSTALL

IMPORT

SIG · BABEL-PLUGIN-TRANS

babel-plugin-transform-builtin-extend

serializationjavascriptv1.1.2

Install

—

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.

plugin (default)

✓ In .babelrc: ["babel-plugin-transform-builtin-extend", { globals: ["Error", "Array"] }]

✗ Using require('babel-plugin-transform-builtin-extend') in code

This is a Babel plugin, not a runtime import. It must be configured in Babel 6 config.

Shows Babel 6 configuration to extend Error and Array classes using static analysis.

{ "plugins": [ ["babel-plugin-transform-builtin-extend", { "globals": ["Error", "Array"], "approximate": false }] ] }

Debug

Known issues

deprecatedThis plugin is for Babel 6 only. Babel 7+ has native support for extending built-ins via @babel/plugin-proposal-class-properties or @babel/plugin-transform-classes.

fix

Upgrade to Babel 7+ and use appropriate modern plugins.

affects: all

gotchaThe 'approximate' mode for IE <= 10 does not correctly implement built-in extension semantics; it falls back to ES5 inheritance which may not work as expected.

fix

Avoid using approximate mode unless targeting legacy browsers and understand the limitations.

affects: <=1.1.2

gotchaStatic property inheritance relies on __proto__, which is not supported in IE <= 10 and some older browsers.

fix

Do not rely on static inheritance from extended built-ins if targeting IE <= 10.

affects: <=1.1.2

Errors

Common errors & fixes

Error: Cannot find module 'babel-plugin-transform-builtin-extend'

Plugin not installed or used with Babel 7+ (which uses @babel scoped packages).

fix

npm install babel-plugin-transform-builtin-extend --save-dev and ensure Babel 6 is used.

ReferenceError: __proto__ is not defined

Code runs in an environment where __proto__ is not supported (e.g., IE <= 10).

fix

Enable the 'approximate' option in plugin config, with caveats.

Upgrade

Version history

1.1.2latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

24 hits · last 30 days

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Resources

githubhttps://github.com/loganfsmyth/babel-plugin-transform-builtin-extend ↗

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