Registry / devops / babel-preset-meteor

babel-preset-meteor

library8.0.3jsnpmunverified

Babel preset for Meteor's build system, enabling ES2015+ syntax and features supported by Meteor's runtime. Current stable version is 8.0.3. This preset is specifically designed for Meteor plugins and applications, providing transforms and polyfills that align with Meteor's version of Node.js and browser targets. Unlike generic presets like @babel/preset-env, babel-preset-meteor includes Meteor-specific transforms (e.g., object-assign, regenerator, dynamic import) and avoids unnecessary transformations already handled by Meteor's compilation pipeline. Release cadence is tied to Meteor releases; note that this package has been in maintenance mode since Meteor 2.0, with newer projects typically using Meteor's built-in Babel configuration or @babel/preset-env directly.

devops

npm install babel-preset-meteor

github ↗package ↗

INSTALL

IMPORT

SIG · BABEL-PRESET-METEO

babel-preset-meteor

devopsjavascriptv8.0.3

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 preset

✓ { "presets": ["meteor"] }

✗ { "presets": ["babel-preset-meteor"] }

When using .babelrc, omit the 'babel-preset-' prefix; Babel resolves it automatically.

Node API

✓ const babel = require('@babel/core'); babel.transform(code, { presets: ['meteor'] });

✗ const babel = require('babel-core'); babel.transform(code, { presets: ['meteor'] });

babel-core is deprecated; use @babel/core since babel-preset-meteor 8.x works with Babel 7.

CLI usage

✓ babel script.js --presets meteor

✗ babel script.js --presets babel-preset-meteor

CLI resolves preset names similarly; do not include the full scoped package name.

Demonstrates installation and basic configuration of babel-preset-meteor via .babelrc and CLI.

// Install: npm install --save-dev babel-preset-meteor // Create .babelrc in project root, or in a package directory { "presets": ["meteor"] } // Then run Babel on your files: // babel src/ --out-dir lib --presets meteor

Debug

Known issues

breakingbabel-preset-meteor 8.x requires Babel 7 (i.e., @babel/core). It is incompatible with older babel-core 6.x.

fix

Upgrade to @babel/core (Babel 7) and use babel-preset-meteor@8 or later.

affects: >=8.0.0

deprecatedThis preset is in maintenance mode. Meteor's official recommendation for new projects is to use @babel/preset-env with appropriate targets.

fix

For new projects, consider using @babel/preset-env directly and configure targets based on Meteor's Meteor.userConfig().

affects: >=8.0.0

gotchaThe preset automatically includes @babel/plugin-transform-runtime. Ensure @babel/runtime is installed as a dependency.

fix

Add @babel/runtime to your dependencies or devDependencies if not already present.

affects: >=8.0.0

Errors

Common errors & fixes

Error: Cannot find module 'babel-preset-meteor'

The preset is not installed or Babel cannot resolve it.

fix

Run 'npm install --save-dev babel-preset-meteor' from the project root.

Error: Requires Babel "^7.0.0-0", but was loaded with "6.x.x"

Mismatched Babel versions: preset expects Babel 7 but old babel-core 6 is installed.

fix

Install @babel/core (Babel 7) and uninstall babel-core if present.

ReferenceError: regeneratorRuntime is not defined

Missing @babel/runtime package which provides the async generator helper.

fix

Install @babel/runtime: 'npm install @babel/runtime'.

Upgrade

Version history

8.0.3latest on npm

Audit

Dependencies

@babel/runtimerequiredProvides helper functions for transpiled code that Meteor expects to be available at runtime.

Agent activity

6 hits · last 30 days

node

Resources

githubhttps://github.com/meteor/babel-preset-meteor ↗

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