Construct-JS – A library for creating byte level data structures

Re:Construct-JS – A library for creating byte level data str... by Schampu on Monday March 18, 2019 @09:33AM (#19420841)

DataView [0] itself already has pretty useful methods to work with binary data. To encode/decode strings, use TextEncoder [1]

Both implementations are very optimized and fast. Also DataView offers working with 64-bit values using the new BigInt type [2].

Here [3] a short example on how you can quickly build C-like structures in JavaScript

[0] DataView: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

[1] TextEncoder: https://developer.mozilla.org/en-US/docs/Web/API/TextEncoder

[2] BigInt: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

[3] C-like Structures: https://jsfiddle.net/5tz0hsjq/

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Re:Construct-JS – A library for creating byte level data str... by FrancisStokes on Monday March 18, 2019 @10:07AM (#19421071)

construct-js uses DataView under the hood. I wrote construct-js to ease working with binary data by allowing you to name and reference sections, and handle things like endianess easily in one place. With a DataView, I still need to calculate offsets into a structure manually, whereas construct-js has .getOffset(name) and .getDeepOffset(path). If performance is key however, use the lowest level of course.

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