:confetti_ball: Blazing fast unique hash generator

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Statistics on hash-sum

Number of watchers on Github 104
Number of open issues 0
Main language JavaScript
Open pull requests 0+
Closed pull requests 0+
Last commit almost 3 years ago
Repo Created almost 3 years ago
Repo Last Updated 3 months ago
Size 106 KB
Homepage https://ponyfoo.com
Organization / Authorbevacqua
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blazing fast unique hash generator


npm i hash-sum -S


  • no dependencies
  • minimal footprint
  • works in all of node.js, io.js, and the browser
  • hashes functions based on their source code
  • produces different hashes for different object types
  • support for circular references in objects
  • ignores property assignment order


yields a four-byte hexadecimal hash based off of value.

# creates unique hashes
 creates unique hashes
4d237d49 from: [ 0, 1, 2, 3 ]
766ec173 from: { url: 12 }
2f473108 from: { headers: 12 }
23308836 from: { headers: 122 }
062bce44 from: { headers: '122' }
acb9f66e from: { headers: { accept: 'text/plain' } }
1c365a2d from: { payload: [ 0, 1, 2, 3 ], headers: [ { a: 'b' } ] }
7319ae9d from: { a: [Function] }
8a3a0e86 from: { b: [Function] }
b6d7f5d4 from: { b: [Function] }
6c95fc65 from: function () {}
2941766e from: function (a) {}
294f8def from: function (b) {}
2d9c0cb8 from: function (a) { return a;}
ed5c63fc from: function (a) {return a;}
bba68bf6 from: ''
2d27667d from: 'null'
774b96ed from: 'false'
2d2a1684 from: 'true'
8daa1a0c from: '0'
8daa1a0a from: '1'
e38f07cc from: 'void 0'
6037ea1a from: 'undefined'
9b7df12e from: null
3c206f76 from: false
01e34ba8 from: true
1a96284a from: 0
1a96284b from: 1
29172c1a from: undefined
4505230f from: {}
3718c6e8 from: { a: {}, b: {} }
5d844489 from: []
938eaaf0 from: Tue Jul 14 2015 15:35:36 GMT-0300 (ART)
dfe5fb2e from: global
ok 1 should be equal



hash-sum questions on Stackoverflow (View All Questions)
  • 'Hash Sum mismatch'. How to edit /etc/apt/sources.list specifically?
  • debian apt packages hash sum mismatch
  • Can Nginx make hash sum from some strings (unique Request Id)?
  • Hash Sum mismatch in apt-get update
  • Docker build fails with Hash Sum Mismatch error
  • Docker ubuntu image are not building due to Hash Sum mismatch
  • Docker Packages: Hash Sum Mismatch
  • My Debian repository is throwing a "Hash Sum mismatch" error
  • apt-get update fail with Hash Sum mismatch in docker
  • Ruby array group_by nested hash sum fields
  • Hash sum of an object in python
  • Nested Hash sum
  • Is it possible to convert javascript reference to a number or hash sum?
  • Group hash sum of files
  • Generate a hash sum for several integers
  • Is there a way to get a HEAD~<number> by commit hash sum in git
hash-sum list of languages used
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