ubelt

library1.4.2jsnpmunverified

A small utility belt library by Dominic Tarr providing common functional helpers (e.g., map, filter, reduce, pipe, compose) for Node.js and browsers. Current stable version 3.2.2, released infrequently as a maintenance package. Designed for small projects where lightweight dependencies are preferred. Key differentiator vs. Lodash/Ramda: minimal API surface, no dependencies, zero-config.

npm install ubelt

github ↗package ↗

INSTALL

IMPORT

SIG · UBELT

ubelt

javascriptv1.4.2

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.

map

✓ import { map } from 'ubelt'

✗ import map from 'ubelt'

Default export is an object with all functions; named exports are preferred.

pipe

✓ const { pipe } = require('ubelt')

✗ import { pipe } from 'ubelt'

Package uses CommonJS; ESM import requires a bundler that handles CJS interop.

ubelt

✓ import ubelt from 'ubelt'

✗ const ubelt = require('ubelt')

Default import is an object containing all utilities. Also works with require.

Demonstrates pipe, filter, and map functions to process an array.

import { map, filter, pipe } from 'ubelt'; const result = pipe( [1, 2, 3, 4], filter(x => x % 2 === 0), map(x => x * 2) ); console.log(result); // [4, 8]

Debug

Known issues

breakingIn v2, the package was renamed from 'dominictarr-ubelt' to 'ubelt'. Requires updating imports.

fix

Update package.json dependency to 'ubelt' and change import paths.

affects: >=1.0.0 <2.0.0

deprecatedSome functions like 'toAsync' have been removed as they were experimental.

fix

Replace with native Promise or async/await patterns.

affects: >=2.0.0

gotchaThe 'map' function does not support object iteration; only arrays.

fix

Use Object.keys/values/entries or a library like Lodash for objects.

affects: *

Errors

Common errors & fixes

Cannot find module 'ubelt'

Package not installed or incorrect version.

fix

Run 'npm install ubelt' to install the latest version.

TypeError: ubelt.map is not a function

Importing default export but trying to use named property incorrectly.

fix

Use named import: import { map } from 'ubelt'; or use default: const ubelt = require('ubelt'); then ubelt.map().

Upgrade

Version history

1.4.2latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/dominictarr/ubelt ↗

packagehttps://www.npmjs.com/package/ubelt ↗