jashkenas/underscore
This system is the Underscore.js utility library, providing a collection of core JavaScript functions for arrays, collections, and objects. It has been refactored into a modular ES module structure to support tree-shaking and selective imports, while maintaining compatibility with CommonJS and browser environments. The codebase includes comprehensive test coverage using QUnit and Rollup to verify functionality and bundle efficiency.
50.0
Weak · 2 August 2026
20k
lines of production code
JavaScript
primary language
4
bus factor · 337 authors in all
3
measurements over time
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About this page
- The description of this project is derived from its own commit history, not from its README.
- The score is its highest published measurement, taken on 2 August 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
- Measured at commit d8f846769f — the exact code this score is about.
- Scored under rubric rubric-2026.08.18. Score the same commit under that rubric and you get the same number.