Registry / llm-agents / babel-preset-stage-0

babel-preset-stage-0

library6.24.1jsnpmunverified

Babel preset that enables all stage 0 (strawman) JavaScript proposal plugins. Version 6.24.1 is the latest stable release; this package is part of Babel 6 and has been deprecated in favor of individual proposal plugins or @babel/preset-env with targets. It includes plugins for syntactic proposals like do-expressions, pipeline operator, and throw expressions. No longer maintained; users should migrate to Babel 7/8 and use specific plugins.

llm-agents

npm install babel-preset-stage-0

github ↗package ↗homepage ↗

INSTALL

IMPORT

SIG · BABEL-PRESET-STAGE

babel-preset-stage-0

llm-agentsjavascriptv6.24.1

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.

preset-stage-0

✓ require('babel-preset-stage-0')

✗ import presets from 'babel-preset-stage-0'

CommonJS require is used; ESM import not supported.

default

✓ module.exports = { presets: ['stage-0'] }

✗ module.exports = { presets: ['babel-preset-stage-0'] }

Preset names can be shorthand; no need for full package name in .babelrc.

transform

✓ babel.transform(code, { presets: ['stage-0'] })

✗ babel.transform(code, { presets: [require('babel-preset-stage-0')] })

Passing preset name as string is idiomatic.

Shows how to install and configure the stage-0 preset, then use a pipeline operator (stage-0 proposal).

// Install: npm install --save-dev babel-preset-stage-0 // .babelrc { "presets": ["stage-0"] } // Example JS with stage-0 features // Pipeline operator: 2 |> double |> square const double = x => x * 2; const square = x => x * x; const result = 2 |> double |> square; console.log(result); // 16

Debug

Known issues

deprecatedbabel-preset-stage-0 is deprecated in Babel 7+

fix

Use @babel/preset-env with specific targets or individual plugins.

affects: >=7.0.0

breakingStage presets are removed in Babel 8

fix

Migrate to @babel/preset-env and explicit plugin configuration.

affects: >=8.0.0

gotchaIncluding stage-0 enables unstable proposals that may change or be removed

fix

Pin exact Babel version and update proposals carefully.

affects: all

deprecatedStage presets depend on deprecated babel-preset-stage-1, -2, -3

fix

Remove stage presets and use individual plugins for needed proposals.

affects: all

Errors

Common errors & fixes

Error: Cannot find module 'babel-preset-stage-0'

Package not installed or version mismatch

fix

npm install --save-dev babel-preset-stage-0@6.24.1

Error: Plugin/Preset files are not allowed to export objects, only functions.

Using an older Babel 6 preset with Babel 7

fix

Upgrade to @babel/preset-stage-0 or use Babel 6

TypeError: (intermediate value) is not a function

Babel 7 dropped support for stage presets

fix

Migrate to @babel/preset-env and individual plugins

Upgrade

Version history

6.24.1latest on npm

Audit

Dependencies

babel-preset-stage-1requiredstage-0 includes stage-1, stage-2, and stage-3 presets

Agent activity

18 hits · last 30 days

node

OpenAI (training)

Resources

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

packagehttps://www.npmjs.com/package/babel-preset-stage-0 ↗

homepagehttps://babeljs.io ↗