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underscore

JavaScript's functional programming helper library.

1.13.8 112M downloads/mo #1657 most downloaded on npm jashkenas/underscore

What this package is like to depend on

Last release 6 months ago

19 Feb 2026

Release timing varies

gaps range from 9 days to 1.8 years

This project publishes no release notes

the list below is its commits, not an announcement

1 version withdrawn

withdrawn after publishing

15 years old

55 releases · first in 2011

1 release in the last 12 months

see the full history below

Release timeline

55 releases · Nov 2011 to Feb 2026
2012 2014 2016 2018 2020 2022 2024 2026
Release Pre-release Withdrawn

Releases

latest 55
  1. 1.13.8 19 Feb 2026
    Commits, not release notes

    This project publishes no release notes. Between 1.13.7 and 1.13.8 there were 21 commits, 18 of them substantive:

    • Added _.VERSION to the documentation notes section
    • Moved version to utility, added version to table of contents, changed id, title and > symbol
    • docs: replace 'ticket' with 'issue' in contributing guidelines
    • docs: fix article usage for 'issue'
    • Bump the version to 1.13.8
    • Bump the copyright years
    • Add a .editorconfig
    • Add regression test against stack overflow in _.flatten
    • Make internal flatten nonrecursive
    • Add regression test against stack overflow in _.isEqual
    • Make _.isEqual nonrecursive
    • Temporarily obfuscate comments
    • Add preliminary release notes for 1.13.8
    • Update minified bundles
    • Revert obfuscations from 42823bb.
    • Mention CVE-2026-27601 in comments and documentation (#3011)
    • Add links to diff and docs in 1.13.8 change log entry
    • Re-generate annotated sources and minified codemaps
  2. 1.13.7 24 Jul 2024
    Commits, not release notes

    This project publishes no release notes. Between 1.13.6 and 1.13.7 there were 25 commits, 21 of them substantive:

    • Run patch-package when building the docs
    • Add source links to all functions in documentation (close #2976)
    • Add a github entry to the FUNDING.yml
    • fix(range): step documentation
    • Add nativeDataView check to isDataView
    • Add in tests for non-native dataview
    • Bump GitHub workflow actions to latest versions
    • Fix typos
    • feature/theme-toggle
    • removed extra console log
    • minor refactor to work on firefox, moving files arond
    • fail if no toggle
    • incorporated stylesheet that was already available
    • minimal dark mode implementation
    • unncessary prefers-color-scheme: light removal
    • formatting, filter, darker darkmode
    • even more css formatting
    • Bump the version to 1.13.7
    • Bump the copyright years
    • Add a change log entry for 1.13.7

    …and 1 more.

  3. 1.13.6 23 Sep 2022
    Commits, not release notes

    This project publishes no release notes. Between 1.13.5 and 1.13.6 there were 9 commits, 7 of them substantive:

    • Verify that production and doc builds still work in CI
    • Hostfix for broken builds
    • Remove patch-package postinstall script
    • Bump the version to 1.13.6 (hotfix)
    • Add changelog entry for versioin 1.13.6
    • Underscore 1.13.6
    • Update generated files, tag 1.13.6 release
  4. 1.13.5 23 Sep 2022 withdrawn

    This version has an error in the install script

    Commits, not release notes

    This project publishes no release notes. Between 1.13.4 and 1.13.5 there were 13 commits, 11 of them substantive:

    • Upgrade karma{,-sauce-launcher} devDeps, lockfile as side effect
    • Upgrade karma-qunit
    • Run npm audit fix
    • Upgrade nyc and coveralls to latest
    • Test LTS Node.js versions in CI
    • Reorganize test scripts to avoid rollup config coverage report
    • Add a module entry to the require exports condition
    • Bump the version to 1.13.5
    • Add a change log entry for 1.13.5
    • Work around docco build problem using patch-package
    • Update generated sources, tag 1.13.5 release
  5. 1.13.4 02 Jun 2022
    Commits, not release notes

    This project publishes no release notes. Between 1.13.3 and 1.13.4 there were 11 commits, 8 of them substantive:

    • Expand git.io URLs in codeql-analysis workflow (fix #2957)
    • add fsck error workaround to contributing.md #2887
    • update contributing to clarify how to clone from other sources
    • fix heading nesting
    • Fix for webpack module federation "No version" error
    • Bump the version to 1.13.4
    • Add a change log entry for 1.13.4
    • Update generated files, tag 1.13.4 release
  6. 1.13.3 23 Apr 2022
    Commits, not release notes

    This project publishes no release notes. Between 1.13.2 and 1.13.3 there were 24 commits, 20 of them substantive:

    • Enable security scanning with GitHub CodeQL
    • Prevent CodeQL from scanning irrelevant files
    • Work around GitHub Actions YAML limitation
    • Move CodeQL config to a better place and fix reference
    • Reference CodeQL config in init instead of analysis step
    • Remove duplicate with
    • Include test code in security scans
    • Prevent potential problems from a future colors@>1.4.0 upgrade
    • Remove unneeded Xvfb from Travis config
    • Test: Use same QUnit version in CI as on website
    • Parenthesize mixed expressions of || and && (fix #2949)
    • Enforce parenthesization of && and || with a linter rule (#2949)
    • Parenthesize remaining mixed expressions of && and || (#2949)
    • Prevent test-node from running twice in CI on Node.js 14
    • Waste even fewer CPU cycles in CI
    • Add a comment to the modules/.eslintrc (post-merge review comment #2953)
    • Bump the version to 1.13.3
    • Update the LICENSE date
    • Add a change log entry for 1.13.3
    • Update generated files, tag 1.13.3 release
  7. 1.13.2 16 Dec 2021
    Commits, not release notes

    This project publishes no release notes. Between 1.13.1 and 1.13.2 there were 22 commits, 16 of them substantive:

    • Modify bug in function emulatedSet
    • Fix bug in function emulatedSet
    • Changing Index file to resolve bug in docs
    • Changing Index file to resolve bug in documents
    • Correcting typo and Changing docs of _.unescape
    • Mobile responsive and more readability
    • add test unit 'throttle three times'
    • Improving design for Mobile
    • Restore whitespace consistency
    • Add a regression test for #2927 (caused in #2158)
    • Properly convert _.sample input collection _.toArray (fix #2927)
    • Clarify that _.bind and _.partial can be used together (#2328)
    • Use statically.io for the 1.13.x series doc archives
    • Bump the version to 1.13.2
    • Add a change log entry for 1.13.2
    • Update generated sources, tag 1.13.2 release
  8. 1.13.1 15 Apr 2021
    Commits, not release notes

    This project publishes no release notes. Between 1.13.0 and 1.13.1 there were 6 commits, 5 of them substantive:

    • Revert .gitignore underscore.js from 57a4a0e (fix #2923)
    • Add some build clarifications to the documentation (#2923)
    • Bump the version to 1.13.1
    • Update the bundle sizes
    • Add version 1.13.1 to the change log
  9. 1.13.0 09 Apr 2021
    Commits, not release notes

    This project publishes no release notes. Between 1.13.0-3 and 1.13.0 there were 10 commits, 8 of them substantive:

    • Add a security policy
    • Update the copyright statement
    • Add .github/FUNDING.yml
    • Mention funding options in the README and on the website
    • Remove the prerelease notice from the website
    • Bump the version to 1.13.0
    • Add version 1.13.0 to the change log
    • Update generated sources and tag 1.13.0 release
  10. 1.13.0-3 31 Mar 2021 pre-release

    Nothing published for this version

  11. 1.13.0-2 15 Mar 2021 pre-release

    Nothing published for this version

  12. 1.13.0-1 11 Mar 2021 pre-release

    Nothing published for this version

  13. 1.13.0-0 10 Mar 2021 pre-release

    Nothing published for this version

  14. 1.12.1 15 Mar 2021

    Nothing published for this version

  15. 1.12.0 24 Nov 2020

    Nothing published for this version

  16. 1.11.0 28 Aug 2020

    Nothing published for this version

  17. 1.10.2 30 Mar 2020

    Nothing published for this version

  18. 1.10.1 30 Mar 2020

    Nothing published for this version

  19. 1.10.0 30 Mar 2020

    Nothing published for this version

  20. 1.9.2 06 Jan 2020

    Nothing published for this version

  21. 1.9.1 31 May 2018

    Nothing published for this version

  22. 1.9.0 18 Apr 2018

    Nothing published for this version

  23. 1.8.3 02 Apr 2015

    Nothing published for this version

  24. 1.8.2 22 Feb 2015

    Nothing published for this version

  25. 1.8.1 20 Feb 2015

    Nothing published for this version

  26. 1.8.0 20 Feb 2015

    Nothing published for this version

  27. 1.7.0 26 Aug 2014

    Nothing published for this version

  28. 1.6.0 10 Feb 2014

    Nothing published for this version

  29. 1.5.2 07 Sep 2013

    Nothing published for this version

  30. 1.5.1 08 Jul 2013

    Nothing published for this version

  31. 1.5.0 06 Jul 2013

    Nothing published for this version

  32. 1.4.4 30 Jan 2013

    Nothing published for this version

  33. 1.4.3 04 Dec 2012

    Nothing published for this version

  34. 1.4.2 07 Oct 2012

    Nothing published for this version

  35. 1.4.1 01 Oct 2012

    Nothing published for this version

  36. 1.4.0 27 Sep 2012

    Nothing published for this version

  37. 1.3.3 10 Apr 2012

    Nothing published for this version

  38. 1.3.2 09 Apr 2012

    Nothing published for this version

  39. 1.3.1 23 Jan 2012

    Nothing published for this version

  40. 1.3.0 11 Jan 2012

    Nothing published for this version

  41. 1.2.4 09 Jan 2012

    Nothing published for this version

  42. 1.2.3 07 Dec 2011

    Nothing published for this version

  43. 1.2.2 14 Nov 2011

    Nothing published for this version

  44. 1.2.1 07 Dec 2011

    Nothing published for this version

  45. 1.2.0 07 Dec 2011

    Nothing published for this version

  46. 1.1.7 07 Dec 2011

    Nothing published for this version

  47. 1.1.6 07 Dec 2011

    Nothing published for this version

  48. 1.1.5 07 Dec 2011

    Nothing published for this version

  49. 1.1.4 07 Dec 2011

    Nothing published for this version

  50. 1.1.3 07 Dec 2011

    Nothing published for this version

  51. 1.1.2 07 Dec 2011

    Nothing published for this version

  52. 1.1.1 07 Dec 2011

    Nothing published for this version

  53. 1.1.0 07 Dec 2011

    Nothing published for this version

  54. 1.0.4 07 Dec 2011

    Nothing published for this version

  55. 1.0.3 07 Dec 2011

    Nothing published for this version

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