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A faster (by 16-70%) implementation of "normalize-space-x" package that uses at least 3x less RAM

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shelfio/fast-normalize-spaces

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fast-normalize-spaces

Install

$ yarn add @shelf/fast-normalize-spaces

Usage

const {normalizeSpaces} = require('@shelf/fast-normalize-spaces');

normalizeSpaces('   hello     \n\n\n   \n \n \t world   ');
// 'hello world'

Benchmark

All tests was launched on MacBook Pro 2020:

  • CPU: 2 GHz Quad-Core Intel Core i5 10th gen
  • RAM: 16 GB 3733 MHz LPDDR4X

Speed

normalize-space-x @shelf/fast-normalize-spaces Improvement
~33 kb: 2 994 ops/s, ±2.34% ~33 kb: 3 599 ops/s, ±2.37% 16.81%
~330 kb: 267 ops/s, ±1.66% ~330 kb: 395 ops/s, ±1.89% 32.41%
~3.3 mb: 9 ops/s, ±1.15% ~3.3 mb: 31 ops/s, ±3.76% 70.97%
~33 mb: 1 ops/s, ±12.91% ~33 mb: 3 ops/s, ±2.70% 66.67%

You can run yarn benchmark:speed to test on your own.

Memory usage

Text size normalize-space-x @shelf/fast-normalize-spaces Improvement
33 kb 0.50mb 1.29mb -
330 kb 6.79mb 2.16mb 3.14x
3.3 mb 77.94mb 12.35mb 6.3x
33 mb 498.12mb 112.62mb 4.42x
100mb 1446.14mb 338.11mb 4.28x
150mb 2003.53mb 506.54mb 3.96x
200mb 2660.09mb 674.83mb 3.94x

The larger the string the faster it gets. Memory usage is approximately 3x than the input data size.

Set TEXT_SIZE variable value you want in the test.sh script and run the following command to test memory usage:

yarn benchmark:memory

See Also

Publish

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

License

MIT © Shelf

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A faster (by 16-70%) implementation of "normalize-space-x" package that uses at least 3x less RAM

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