fastest-levenshtein
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    1.0.12 • Public • Published

    fastest-levenshtein 🚀

    Fastest JS implemenation of Levenshtein distance.
    Measure the difference between two strings.

    Build Status Coverage Status

    $ npm i fastest-levenshtein
    

    Usage

    Node

    const {distance, closest} = require('fastest-levenshtein')
     
    // Print levenshtein-distance between 'fast' and 'faster' 
    console.log(distance('fast', 'faster'))
    //=> 2
     
    // Print string from array with lowest edit-distance to 'fast'
    console.log(closest('fast', ['slow', 'faster', 'fastest']))
    //=> 'faster'

    Deno

    import {distance, closest} from 'https://deno.land/x/fastest_levenshtein/mod.ts'
     
    // Print levenshtein-distance between 'fast' and 'faster' 
    console.log(distance('fast', 'faster'))
    //=> 2
     
    // Print string from array with lowest edit-distance to 'fast'
    console.log(closest('fast', ['slow', 'faster', 'fastest']))
    //=> 'faster'

    Benchmark

    I generated 500 pairs of strings with length N. I measured the ops/sec each library achieves to process all the given pairs. Higher is better. fastest-levenshtein is a lot faster in all cases.

    Test Target N=4 N=8 N=16 N=32 N=64 N=128 N=256 N=512 N=1024
    fastest-levenshtein 44423 23702 10764 4595 1049 291.5 86.64 22.24 5.473
    js-levenshtein 21261 10030 2939 824 223 57.62 14.77 3.717 0.934
    leven 19688 6884 1606 436 117 30.34 7.604 1.929 0.478
    fast-levenshtein 18577 6112 1265 345 89.41 22.70 5.676 1.428 0.348
    levenshtein-edit-distance 22968 7445 1493 409 109 28.07 7.095 1.789 0.445

    Relative Performance

    This image shows the relative performance between fastest-levenshtein and js-levenshtein (the 2nd fastest). fastest-levenshtein is always a lot faster. x-axis shows "times faster".

    Benchmark

    License

    This project is licensed under the MIT License - see the LICENSE.md file for details

    Install

    npm i fastest-levenshtein

    DownloadsWeekly Downloads

    5,759,123

    Version

    1.0.12

    License

    MIT

    Unpacked Size

    11 kB

    Total Files

    9

    Last publish

    Collaborators

    • ka-weihe