Underscore.js
Business Profile
Core Value Proposition
Underscore.js provides a comprehensive set of functional programming helpers for JavaScript without extending built-in objects.
Target Customer
JavaScript developers seeking a ready-made collection of functional utilities
Key Differentiator
Over 100 functions for arrays/objects, supports both monolithic and modular imports, non-invasive (does not extend built-ins), open-source with tests and annotations, cross-engine compatibility
Implementation Timeline
Not specified in the content.
Pain Points
- 1Need a large, ready-made set of functional utilities for common JavaScript tasks (map, reduce, find, etc.)
- 2Desire non-invasive utilities that do not modify native prototypes or built-ins
- 3Require flexible build options (monolithic vs modular) and broad engine compatibility
Key Features
- 1Collection and array/object utilities (e.g., map, reduce, find, filter, groupBy, sortBy, indexBy, countBy, shuffle, sample, toArray, size, partition, compact, flatten, uniq)
- 2Function utilities (bind, bindAll, partial, memoize, delay, defer, throttle, debounce, once, after, before, wrap, negate, compose, restArguments)
- 3Object utilities (keys, values, extend, pick, omit, clone, isEqual, isEmpty, has, get, property, etc.)
- 4Utility helpers (template, now, random, uniqueId, noConflict, identity)
- 5Support for modular and monolithic imports, with examples for ESM, AMD, and CommonJS
Target Customer Industries
Competitive Advantages
- 1Non-invasive approach (does not extend built-in JavaScript objects)
- 2Large, well-documented function set (over 100 utilities)
- 3Flexible import models (Monolithic Import recommended; Modular Import available)
- 4Broad engine compatibility across major browsers and Node.js
- 5Open-source with a test suite and community support (GitHub, Patreon, Tidelift)
Key Benefits
Additional Product Information
Product Description
Underscore.js is a JavaScript library that provides a whole mess of useful functional programming helpers without extending any built-in objects. It offers over 100 functions and supports both monolithic and modular imports. It is open-source and part of the DocumentCloud ecosystem, with enterprise options via Tidelift.
Target Market
JavaScript developers building applications who want a ready-made set of functional utilities.
Unique Value Proposition
A comprehensive, non-invasive collection of JavaScript functional utilities with flexible import options and broad engine compatibility, backed by open-source community support.
Technical Requirements
{"ES3-compatible engine support (older browsers) with newer feature usage when available.","Supported environments: Chrome 26–latest; Edge 13, 18 and latest; Firefox 11–latest; Internet Explorer 9–11; Node.js 8–latest; Safari 8–latest; with ExtendScript support mentioned.","Builds: ESM (Development/Production), UMD (Development/Production).","CDN/packaged distributions available: underscore-umd-min.js and underscore-esm-min.js via jsDelivr, unpkg, pagecdn, and cdnjs.","Installation options: npm install underscore; meteor add underscore; bower install underscore.","Modular usage examples for ESM, AMD, and CommonJS."}
Pricing Model
Open-source and free to use; optional paid enterprise coverage via Tidelift; donations via Patreon.
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