Registry / devops / babel-plugin-minify-type-constructors

babel-plugin-minify-type-constructors

library0.4.3jsnpmunverified

A Babel plugin that minifies type constructors like Boolean(), Number(), String(), Array(), and Object() where possible (e.g., replacing `new Boolean(x)` with `!!x` or `new Number(x)` with `+x`). Part of the babel-minify (formerly babili) minification preset. Version 0.4.3 is the latest stable release (2018). The babel-minify project is now in maintenance mode; no new features are expected. This plugin should be used with caution in environments requiring IE8 or lower due to potential compatibility issues. It is designed to work as part of a Babel minification pipeline, complementing other minify plugins.

devops

npm install babel-plugin-minify-type-constructors

github ↗package ↗

INSTALL

IMPORT

SIG · BABEL-PLUGIN-MINIF

babel-plugin-minify-type-constructors

devopsjavascriptv0.4.3

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

✓ module.exports = require('babel-plugin-minify-type-constructors');

CommonJS style; works in Node.js with Babel.

default

✓ import minifyTypeConstructors from 'babel-plugin-minify-type-constructors';

ESM import; requires bundler or Node.js with ESM support.

default

✓ plugins: ['babel-plugin-minify-type-constructors']

✗ plugins: ['minify-type-constructors']

In Babel config, use the full package name.

Shows how to add the plugin to Babel config and the type constructor minification transform.

// babel.config.js module.exports = { plugins: [ 'babel-plugin-minify-type-constructors' ] }; // Input: var a = new Boolean(true); var b = new String('hello'); // Output: var a = !!true; var b = 'hello';

Debug

Known issues

breakingNot recommended for full IE8 and lower support due to potential issues with object wrappers.

fix

Use only in modern environments or apply polyfills.

affects: >=0.4.0

deprecatedThe babel-minify project is no longer actively maintained. Prefer babel-preset-minify or community alternatives.

fix

Migrate to babel-preset-minify (which includes this plugin) or other minifiers.

affects: >=0.4.0

gotchaPotential breaking due to missing dependencies in babel-minify@0.5.0 and 0.5.1.

fix

Use version 0.4.3 or upgrade to a later patch if available.

affects: 0.5.0 - 0.5.1

Errors

Common errors & fixes

Error: Cannot find module 'babel-plugin-minify-type-constructors'

Package not installed or missing in node_modules.

fix

npm install babel-plugin-minify-type-constructors --save-dev

ReferenceError: Boolean is not defined (or similar) in transformed code

Plugin transforms `new Boolean(x)` to `!!x`, which may not be equivalent in all edge cases (e.g., `new Boolean(false)` is truthy).

fix

Review transformed code and possibly disable plugin for sensitive cases.

Upgrade

Version history

0.4.3latest on npm

Audit

Dependencies

@babel/coreoptionalRequired as a peer dependency for Babel plugin API

Agent activity

4 hits · last 30 days

node

Resources

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

packagehttps://www.npmjs.com/package/babel-plugin-minify-type-constructors ↗