A TypeScript implementation of the Nicoshev/rapidhash.
Rapidhash is a fast hashing algorithm that passes all tests in SMHasher and SMHasher3.
npm install rapidhash-jsimport {
// The functions rapidhash, rapidhash_fast, and rapidhash_protected currently implement the v2.2 algorithm.
rapidhash,
rapidhash_fast,
rapidhash_protected,
// To use the old v1 algorithm, import rapidhash_v1 (or rapidhash_v1_fast, rapidhash_v1_protected) instead.
rapidhash_v1,
} from 'rapidhash-js';
// rapidhash() returns a 64-bit hash value represented as bigint.
console.log(rapidhash('hello world')); // Output: 1722744455612372674n
// You can specify a 64-bit seed value with the 'seed' option.
console.log(rapidhash('hello world', {seed: 0x0123_4567_89AB_CDEFn})); // Output: 13409940373860458135n
// You can specify the behavior of the rapid_mum() function
// with the rapidMumBehaviour option (default is 'fast').
console.log(rapidhash('hello world', {rapidMumBehaviour: 'protected'})); // Output: 12365338091610779222n
// Instead of specifying the rapidMumBehaviour option,
// you can call rapidhash_fast() or rapidhash_protected().
console.log(rapidhash_protected('hello world'));Apple M3 Max
[Benchmark Environment]
Node.js: v22.15.1
CPU: Apple M3 Max (16 cores, 2400 MHz)
[1-4 bytes]
[v1.0] rapidhash (fast) : 6,285,122.13 ops/s (159.11 ns/iter)
[v1.0] rapidhash (protected) : 5,358,496.06 ops/s (186.62 ns/iter)
[v2.0] rapidhash (fast) : 6,751,586.61 ops/s (148.11 ns/iter)
[v2.0] rapidhash (protected) : 5,503,585.53 ops/s (181.70 ns/iter)
[v2.2] rapidhash (fast) : 6,713,669.81 ops/s (148.95 ns/iter)
[v2.2] rapidhash (protected) : 5,474,441.63 ops/s (182.67 ns/iter)
[5-8 bytes]
[v1.0] rapidhash (fast) : 5,995,195.47 ops/s (166.80 ns/iter)
[v1.0] rapidhash (protected) : 5,129,620.76 ops/s (194.95 ns/iter)
[v2.0] rapidhash (fast) : 6,217,065.60 ops/s (160.85 ns/iter)
[v2.0] rapidhash (protected) : 5,326,035.89 ops/s (187.76 ns/iter)
[v2.2] rapidhash (fast) : 6,050,308.59 ops/s (165.28 ns/iter)
[v2.2] rapidhash (protected) : 5,344,429.93 ops/s (187.11 ns/iter)
[9-16 bytes]
[v1.0] rapidhash (fast) : 5,986,726.82 ops/s (167.04 ns/iter)
[v1.0] rapidhash (protected) : 5,154,979.68 ops/s (193.99 ns/iter)
[v2.0] rapidhash (fast) : 6,131,914.48 ops/s (163.08 ns/iter)
[v2.0] rapidhash (protected) : 5,321,633.57 ops/s (187.91 ns/iter)
[v2.2] rapidhash (fast) : 6,247,440.63 ops/s (160.07 ns/iter)
[v2.2] rapidhash (protected) : 5,351,510.81 ops/s (186.86 ns/iter)
[17-64 bytes]
[v1.0] rapidhash (fast) : 3,843,646.47 ops/s (260.17 ns/iter)
[v1.0] rapidhash (protected) : 3,312,988.79 ops/s (301.84 ns/iter)
[v2.0] rapidhash (fast) : 3,947,650.45 ops/s (253.32 ns/iter)
[v2.0] rapidhash (protected) : 3,390,062.69 ops/s (294.98 ns/iter)
[v2.2] rapidhash (fast) : 4,039,784.70 ops/s (247.54 ns/iter)
[v2.2] rapidhash (protected) : 3,400,339.38 ops/s (294.09 ns/iter)
[65-111 bytes]
[v1.0] rapidhash (fast) : 2,539,382.14 ops/s (393.80 ns/iter)
[v1.0] rapidhash (protected) : 2,156,257.28 ops/s (463.77 ns/iter)
[v2.0] rapidhash (fast) : 2,580,829.71 ops/s (387.47 ns/iter)
[v2.0] rapidhash (protected) : 2,186,335.35 ops/s (457.39 ns/iter)
[v2.2] rapidhash (fast) : 2,545,090.54 ops/s (392.91 ns/iter)
[v2.2] rapidhash (protected) : 2,189,080.78 ops/s (456.81 ns/iter)
[112-256 bytes]
[v1.0] rapidhash (fast) : 1,518,423.71 ops/s (658.58 ns/iter)
[v1.0] rapidhash (protected) : 1,274,445.41 ops/s (784.66 ns/iter)
[v2.0] rapidhash (fast) : 1,484,277.31 ops/s (673.73 ns/iter)
[v2.0] rapidhash (protected) : 1,258,892.94 ops/s (794.35 ns/iter)
[v2.2] rapidhash (fast) : 1,525,211.09 ops/s (655.65 ns/iter)
[v2.2] rapidhash (protected) : 1,293,585.65 ops/s (773.05 ns/iter)
[1M bytes]
[v1.0] rapidhash (fast) : 356.49 ops/s (2.81 ms/iter)
[v1.0] rapidhash (protected) : 296.16 ops/s (3.38 ms/iter)
[v2.0] rapidhash (fast) : 375.05 ops/s (2.67 ms/iter)
[v2.0] rapidhash (protected) : 309.03 ops/s (3.24 ms/iter)
[v2.2] rapidhash (fast) : 374.26 ops/s (2.67 ms/iter)
[v2.2] rapidhash (protected) : 309.25 ops/s (3.23 ms/iter)
MIT License
Copyright (c) 2025 KOMIYA Atsushi.