Search code examples
javascriptv8arraybuffertyped-arrays

If v8 optimizes ArrayBuffer like Uint*Array

I have checked out Where to use ArrayBuffer vs typed array in JavaScript? but it doesn't describe if ArrayBuffer is optimized by v8 or not. So say you have in there different chunks of integers or floats in the ArrayBuffer, wondering if they will be optimized by v8 like they are a Uint8Array, etc.

Solution

  • V8 developer here. ArrayBuffers are just data containers, I don't see what you would optimize about them. What kind of optimizations would you expect for "chunks of integers or floats"?

    Typed arrays are views onto ArrayBuffers; the answer to the post you linked explains that nicely. Typed arrays provide index-based access to their elements (and V8's optimizing compiler has good support for such accesses); ArrayBuffers provide no way to access their elements (so the same optimizations do not apply).