Best way to convert GArray/PackedStringArrary to JS Array

[etamity]

Hi All,
I am looking for best way to convert GArray/PackedStringArray, because feel JS array has more flexibility for the array operation.
I've seen the docs https://godotjs.github.io/documentation/godot-js-scripts/bindings/ shows how to covert JS Array/Object to GArray/GDictionary, but didn't see an example how it can convert it back to js array/object.

I wonder does GodotJs has built-in convert function ?

Currently I did it with this way, but feel it's a bit low efficient

const parts_files: PackedStringArray = DirAccess.get_files_at(PARTS_DATA);
    let parts: string[] = [];
    for (let i = 0; i < parts_files.size(); ++i) {
      const filePath = parts_files.get(i);
      parts.push(filePath);
    }

But i think might be there is better way to do it natively?
Thank you!

[Benjamin-Dobell]

I don't believe there are currently APIs that specifically optimize this case. So I think the best you can do right now is pretty much standard JS optimization e.g.

const parts_files: PackedStringArray = DirAccess.get_files_at(PARTS_DATA);
const length = parts_files.size();
let parts: string[] = new Array(length);
for (let i = 0; i < length; ++i) {
  const filePath = parts_files.get(i);
  parts[i] = filePath;
}

I'm not sure how much benefit you get by potentially eliminating an underlying buffer resize. v8 applies different strategies internally depending on array length etc. However, you will receive a more measurable gain by calling parts_files.size() just the once, since that's crossing the JS -> Godot bridge which has associated overhead.