ubelt

3.2.2 verified Sat Apr 25 auth: no javascript maintenance

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.

Common errors

error Cannot find module 'ubelt' ↓

cause Package not installed or incorrect version.

fix

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

error TypeError: ubelt.map is not a function ↓

cause 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().

Warnings

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

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

deprecated Some functions like 'toAsync' have been removed as they were experimental. ↓

fix Replace with native Promise or async/await patterns.

gotcha The 'map' function does not support object iteration; only arrays. ↓

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

Install

npm install ubelt

yarn add ubelt

pnpm add ubelt

Imports

map
wrong
```
import map from 'ubelt'
```
correct
```
import { map } from 'ubelt'
```
Default export is an object with all functions; named exports are preferred.
pipe
wrong
```
import { pipe } from 'ubelt'
```
correct
```
const { pipe } = require('ubelt')
```
Package uses CommonJS; ESM import requires a bundler that handles CJS interop.
ubelt
wrong
```
const ubelt = require('ubelt')
```
correct
```
import ubelt from 'ubelt'
```
Default import is an object containing all utilities. Also works with require.

Quickstart

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]