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Data Theft Repackaged: A Case Study in Malicious Wrapper Packages on npm
The Socket Research Team breaks down a malicious wrapper package that uses obfuscation to harvest credentials and exfiltrate sensitive data.
@shelf/fast-normalize-spaces
Advanced tools
A faster (by 16-70%) implementation of "normalize-space-x" package that uses at least 3x less RAM
fast-normalize-spaces
$ yarn add @shelf/fast-normalize-spaces
const {normalizeSpaces} = require('@shelf/fast-normalize-spaces');
normalizeSpaces(' hello \n\n\n \n \n \t world ');
// 'hello world'
All tests was launched on MacBook Pro 2020:
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.
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
$ git checkout master
$ yarn version
$ yarn publish
$ git push origin master --tags
MIT © Shelf
FAQs
A faster (by 16-70%) implementation of "normalize-space-x" package that uses at least 3x less RAM
We found that @shelf/fast-normalize-spaces demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 63 open source maintainers collaborating on the project.
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