fast-chunk-string

Chunk string into equal substrings with unicode support

Credits to stackoverflow.com/a/29202760/2727317

Install

$ yarn add @shelf/fast-chunk-string

Usage

const fastChunkString = require('@shelf/fast-chunk-string');

// the fastest way
fastChunkString('unicorns', {size: 2, unicodeAware: false});
// => ['un', 'ic', 'or', 'ns']

// ignore unicode, still fast but inaccurate
fastChunkString('😀😃😄😁', {size: 2, unicodeAware: false});
// => ['😀', '😃', '😄', '😁']

// respect unicode, slow but accurate
fastChunkString('😀😃😄😁', {size: 2, unicodeAware: true});
// => ['😀😃', '😄😁']

Benchmarks

Run via yarn benchmark. Measured on Macbook Pro 16" with M1 Max processor.

Running "Without Unicode" suite...
Progress: 100%

  ~33 kb split by 2 kb:
    14 384 027 ops/s, ±0.21%    | 86.51% slower

  ~33 kb split by 1 mb:
    106 655 332 ops/s, ±0.12%   | fastest

  ~330 kb split by 2 kb:
    1 482 220 ops/s, ±0.34%     | 98.61% slower

  ~330 kb split by 1 mb:
    106 442 883 ops/s, ±0.14%   | 0.2% slower

  ~3.3 mb split by 2 kb:
    153 356 ops/s, ±0.19%       | 99.86% slower

  ~3.3 mb split by 1 mb:
    48 824 019 ops/s, ±0.16%    | 54.22% slower

  ~33 mb split by 2 kb:
    14 312 ops/s, ±0.28%        | slowest, 99.99% slower

  ~33 mb split by 1 mb:
    7 059 008 ops/s, ±0.32%     | 93.38% slower

Finished 8 cases!
  Fastest: ~33 kb split by 1 mb
  Slowest: ~33 mb split by 2 kb
Running "Unicode Aware" suite...
Progress: 100%

  ~33 kb split by 2 kb with unicodeAware:
    450 ops/s, ±0.24%   | fastest

  ~33 kb split by 1 mb with unicodeAware:
    428 ops/s, ±0.36%   | 4.89% slower

  ~330 kb split by 2 kb with unicodeAware:
    45 ops/s, ±0.38%    | 90% slower

  ~330 kb split by 1 mb with unicodeAware:
    41 ops/s, ±0.42%    | slowest, 90.89% slower

Finished 4 cases!
  Fastest: ~33 kb split by 2 kb with unicodeAware
  Slowest: ~330 kb split by 1 mb with unicodeAware

Publish

$ git checkout master
$ yarn version
$ yarn publish
$ git push origin master --tags

License

MIT © Shelf

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fix(deps): update dependency string-length to v5

Detected dependencies

circleci

.circleci/config.yml

node 5.1.0

npm

package.json

runes 0.4.3

string-length 4.0.2

@babel/cli 7.20.7

@babel/core 7.20.12

@shelf/babel-config 1.2.0

@shelf/eslint-config 2.27.1

@shelf/tsconfig 0.0.9

@types/benchmark 2.1.2

@types/jest 29.4.0

@types/runes 0.4.1

benny 3.7.1

eslint 8.33.0

fast-lorem-ipsum 1.2.0

husky 8.0.3

jest 29.4.1

lint-staged 13.1.0

prettier 2.8.3

typescript 4.9.4

node >=16

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