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utf8-transcoder

v3.0.0

Published

2 years ago

Transcode JavaScript strings <> UTF-8 byte arrays

Downloads

4

0High
0Medium
0Low

utf8-transcoder

Transcode JavaScript strings <> UTF-8 byte arrays. Orginally written for use in buffer but factored out into a standalone module.

Why

Mainly to make performance optimization easier and reduce the amount of code getting shipped to browsers. utf8.js exists, but the bytes it generates are returned to the caller as yet another JS string - this is fine but requires additional processing if you need your data as a TypedArray. Text{En,De}coder APIs are also available but leave something to be desired in terms of performance.

Install

$ npm install utf8-transcoder

Test

$ npm run test
$ npm run test-browser

Warning: the tests are very basic at the moment - they only verify that encoding and decoding work for valid 1, 2, 3 and 4 byte code points. Patches welcome to cover things like replacement chars, errors, etc.

Bench

On a chromebook, using [email protected]:

$ npm run bench

> [email protected] bench utf8-transcoder
> node bench

encode
TextEncoder: 2.414s
Buffer: 1.334s
this module: 994.79ms
decode
TextDecoder: 8.975s
Buffer: 1.378s
this module: 418.36ms

License

MIT