Registry / babel-preset-async-to-bluebird

babel-preset-async-to-bluebird

library1.1.0jsnpmunverified

A Babel preset that transforms async functions into Bluebird coroutines using .coroutine(). It is a specialized preset for projects already using Bluebird, providing an alternative to the default regenerator-based async-to-generator transform. This package is in maintenance mode with no recent updates; the current version is 1.1.0 and it works with Babel 6.

npm install babel-preset-async-to-bluebird

github ↗package ↗

INSTALL

IMPORT

SIG · BABEL-PRESET-ASYNC

babel-preset-async-to-bluebird

javascriptv1.1.0

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.

async-to-bluebird preset

✓ In .babelrc: "presets": ["async-to-bluebird"]

✗ In .babelrc: "presets": ["babel-preset-async-to-bluebird"]

Babel resolves the full package name automatically; using the full name works but is verbose.

require in Node API

✓ require('babel-core').transform('code', { presets: ['async-to-bluebird'] })

✗ require('babel-preset-async-to-bluebird').transform(...)

The preset is passed as a string, not imported directly.

require in Node API (explicit)

✓ const preset = require('babel-preset-async-to-bluebird'); require('babel-core').transform('code', { presets: [preset] })

If you prefer to require the preset directly, ensure it is passed as an item in the presets array.

Setup Babel with the async-to-bluebird preset and compile an async function using await.

// .babelrc { "presets": ["async-to-bluebird"] } // install // npm install --save-dev babel-preset-async-to-bluebird babel-preset-env // src.js async function fetchData() { const res = await fetch('https://api.example.com/data'); return res.json(); } // Run: npx babel src.js --out-file compiled.js

Debug

Known issues

deprecatedBabel 6 is end-of-life. This preset does not support Babel 7+ (unless using @babel/plugin-transform-async-to-generator with regenerator).

fix

Upgrade to Babel 7 and use @babel/plugin-transform-async-to-generator or keep Babel 6 if legacy.

affects: >=1.0.0

breakingBluebird must be installed separately as a peer dependency (v3+). If Bluebird is missing, async functions will not be transformed correctly.

fix

npm install bluebird

affects: >=1.0.0

gotchaThis preset replaces native async/await with Bluebird coroutines. If you later remove Bluebird, async functions will break.

fix

Only use this preset if you are committed to Bluebird as a dependency.

affects: >=1.0.0

gotchaThe preset does not include any environment-specific transformations (e.g., polyfills for fetch). You need additional presets like babel-preset-env.

fix

Add babel-preset-env to your presets array before async-to-bluebird.

affects: >=1.0.0

Errors

Common errors & fixes

Error: Cannot find module 'babel-preset-async-to-bluebird'

Package not installed or not in node_modules.

fix

npm install --save-dev babel-preset-async-to-bluebird

ReferenceError: regeneratorRuntime is not defined

Using async-to-bluebird without having installed or configured Bluebird.

fix

npm install bluebird and ensure it is available at runtime (e.g., require('bluebird')).

TypeError: (0 , _asyncToBluebird) is not a function

Misconfigured Babel preset; likely using an outdated Babel version or incorrect preset reference.

fix

Check Babel version (should be 6) and ensure presets are listed correctly in .babelrc.

Upgrade

Version history

1.1.0latest on npm

Audit

Dependencies

bluebirdrequiredPeer dependency required at runtime for .coroutine()

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/eknkc/babel-preset-async-to-bluebird ↗

packagehttps://www.npmjs.com/package/babel-preset-async-to-bluebird ↗