No match.index or match.input for RegExp::exec() result

[hfiguiere]

Describe the Bug

RegExp.exec() in JavaScript return an array with TWO extra properties set: input and index.
The Rust js_sys::RegExp::exec() just return an Array.

Steps to Reproduce

n/a. It's missing in the API.

Expected Behavior

js_sys::RegExp::exec() returns a Match struct that allow accessing input and index as per the JS API.

Actual Behavior

The returned value as a js_sys::Array that don't have index nor input properties.

Additional Context

There don't even seem to be an obvious way to the properties out of the underlying JS object.

[alexcrichton]

Thanks for the report! For now you can probably get by with Reflect to access extra properties, but this is a good thing to keep in mind! We should probably return a subclass of an array or something like that to fix this issue. For now though I'm going to tag this as a breaking change so we can be sure to get around to it with the next round of breaking changes.

[Pauan]

(You would do that by using Reflect::get(&array, &JsValue::from("input")).unwrap_throw(), this works on any JS object)

[hfiguiere]

I figured that out. It is missing some documentation though.