As of my knowledge cutoff date in September 2021, Kotlin/JS does not natively support asynchronous generators like JavaScript does. Kotlin/JS is primarily designed to target the JavaScript runtime and provide interoperability with JavaScript libraries and APIs. While Kotlin/JS supports asynchronous programming through promises and coroutines, it does not have built-in support for native JavaScript async generators.

However, you can still use JavaScript async generators from Kotlin/JS code by leveraging interoperability features. Here's how you can do it:

  1. Write JavaScript Code: Create a JavaScript module that defines an asynchronous generator function. For example:

    // asyncGenerator.js export async function* asyncGenerator() { let count = 0; while (true) { await new Promise(resolve => setTimeout(resolve, 1000)); yield count++; } }
  2. Use JavaScript Interoperability: In your Kotlin/JS code, use JavaScript interoperability to import and use the async generator from the JavaScript module:

    import kotlinx.browser.document import kotlinx.coroutines.MainScope import kotlinx.coroutines.launch import kotlin.js.Promise import kotlin.js.async import kotlin.js.Promise external fun require(module: String): dynamic suspend fun main() { val asyncGeneratorModule = require("./asyncGenerator.js") val asyncGenerator = asyncGeneratorModule.asyncGenerator MainScope().launch { try { for (value in asyncGenerator()) { console.log(value) } } catch (e: Throwable) { console.error("Error occurred: $e") } } } fun main() { Promise.resolve().then { main() } }

In the example above, we import the asyncGenerator function from the asyncGenerator.js module using require, and then we use it from Kotlin/JS code by invoking it as a suspending function in a coroutine context.

Keep in mind that Kotlin/JS and JavaScript have different concurrency models, and mixing them can lead to complex code. It's essential to understand how coroutines and promises interact and how to handle errors and cancellation when working with asynchronous generators in Kotlin/JS.

Please note that the specific details and APIs related to Kotlin/JS and JavaScript interoperability may change in future releases, so always refer to the official Kotlin documentation and JavaScript interoperability guides for the most up-to-date information.

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