Lossless text compression

Benchmark

The performance gets better with the number of words.

words	compressed	original	encode	decode
100 000	226 kB	654 kB	381 ms	51 ms
10 000	25 kB	65 kB	43 ms	8.7 ms
1 000	4.4 kB	6.4 kB	6.7 ms	1.5 ms
100	0.62 kB	0.73 kB	0.44 ms	0.16 ms

Install

npm install lossless-text-compression

How to use

Encode

const { encode } = require('lossless-text-compression');

console.log(
    encode('1121231234123451234561234567123456781234567891234567890')
);

Decode

const { decode } = require('lossless-text-compression');

console.log(
    decode('11234567890')
);

With files

const { encode, decode } = require('lossless-text-compression');
const { readFileSync, writeFileSync } = require('fs');
  
const fileName = ...;           // for example: loremipsum.txt
const compressedFile = ...;     // for example: encoded.txt
const restoredFile = ...;       // for example: decoded.txt

// read yourfile file
const content = readFileSync(fileName, 'utf-8');

// encode and save the content
writeFileSync(compressedFile, encode(content), 'ucs2');

// read and decode the encoded content
const decoded = decode(readFileSync(compressedFileName, 'ucs2'));

// save the restored content
writeFileSync(restoredFileName, decoded, 'utf-8');

Author

Dugagjin Lashi

License

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