kotlin-stdlib/kotlin.js/Promise

Promise

actual open external class Promise<out T>(source)

Exposes the JavaScript Promise object to Kotlin.

Since Kotlin

1.1
@ExperimentalWasmJsInterop
actual external class Promise<out T> : JsAny(source)

Exposes the JavaScript Promise object to Kotlin.

Since Kotlin

1.8

Constructors

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actual constructor(executor: (resolve: (T) -> Unit, reject: (Throwable) -> Unit) -> Unit)
actual constructor(executor: (resolve: (T) -> Unit, reject: (JsAny) -> Unit) -> Unit)

Types

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actual external object Companion
Since Kotlin 1.1
actual external object Companion
Since Kotlin 1.8

Functions

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@ExperimentalWasmJsInterop
actual fun JsPromiseError.asJsException(): JsException
Since Kotlin 2.2
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actual open external fun <S> catch(onRejected: (Throwable) -> S): Promise<S>
Since Kotlin 1.1
actual external fun <S : JsAny?> catch(onRejected: (JsAny) -> S): Promise<S>
Since Kotlin 1.8
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actual open external fun finally(onFinally: () -> Unit): Promise<T>
Since Kotlin 1.1
actual external fun finally(onFinally: () -> Unit): Promise<T>
Since Kotlin 1.8
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actual open external fun <S> then(onFulfilled: (T) -> S?): Promise<S>
actual open external fun <S> then(onFulfilled: (T) -> S?, onRejected: (Throwable) -> S?): Promise<S>
Since Kotlin 1.1
actual external fun <S : JsAny?> then(onFulfilled: (T) -> S?): Promise<S>
actual external fun <S : JsAny?> then(onFulfilled: (T) -> S?, onRejected: (JsAny) -> S?): Promise<S>
Since Kotlin 1.8
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inline fun <T, S> Promise<Promise<T>>.then(noinline onFulfilled: (T) -> S?): Promise<S>
inline fun <T, S> Promise<Promise<T>>.then(noinline onFulfilled: (T) -> S?, noinline onRejected: (Throwable) -> S?): Promise<S>
Since Kotlin 1.1
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@ExperimentalWasmJsInterop
fun JsAny.toThrowableOrNull(): Throwable?

For a Dynamic value caught in JS, returns the corresponding Throwable if it was thrown from Kotlin, or null otherwise.

Since Kotlin 1.8
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@ExperimentalWasmJsInterop
actual inline fun <T : JsAny> JsAny.unsafeCast(): T
Since Kotlin 2.2
@ExperimentalWasmJsInterop
actual fun <T : JsAny> JsAny.unsafeCast(): T

Cast JsAny to other Js type without runtime check

Since Kotlin 1.8