Export function returning a JSValue about javascriptkit HOT 2 CLOSED

I'm stunned... this works perfectly. Can even await the promise off the global scope.

Here's where I ended up:

@_cdecl("fetch")
func fetch() -> Int {
    let globalKey = Int.random(in: Int.min...Int.max)
    let promise = JSPromise { resolve in
        resolve(.success(5))
    }
    JSObject.global["\(globalKey)"] = promise.jsValue()
    return globalKey
}

And then calling in JS:

const key = instance.exports.fetch()
const result = await global[key]
console.log('swift#fetch():', result)

Obviously need to manage cleaning up the global scope but this is an awesome start. Feel free to close this as needed.

from javascriptkit.

I think the best approach here would be to have the Swift side define a global value (by using JSObject.global.myLibrary = JSObject.global.Object.create(JSValue.null), for example), then defining properties such as fetch on that (using JSClosure). Then, from the JS side, you’d be able to pull the myLibrary value off of the global after initializing the SwiftWasm instance and call the fetch method.

from javascriptkit.