Promise

open external class Promise<out T> (source)

Platform and version requirements: JS

Exposes the JavaScript Promise object to Kotlin.

Constructors

<init>

Promise(
    executor: (resolve: (T) -> Unit, reject: (Throwable) -> Unit) -> Unit)

Exposes the JavaScript Promise object to Kotlin.

Functions

catch

open fun <S> catch(onRejected: (Throwable) -> S): Promise<S>

then

open fun <S> then(onFulfilled: (T) -> S): Promise<S>
open fun <S> then(
    onFulfilled: (T) -> S,
    onRejected: (Throwable) -> S
): Promise<S>

Inherited Functions

equals

open operator fun equals(other: Any?): Boolean

Indicates whether some other object is "equal to" this one. Implementations must fulfil the following requirements:

hashCode

open fun hashCode(): Int

Returns a hash code value for the object. The general contract of hashCode is:

toString

open fun toString(): String

Returns a string representation of the object.

Companion Object Functions

all

fun <S> all(
    promise: Array<out Promise<S>>
): Promise<Array<out S>>

race

fun <S> race(promise: Array<out Promise<S>>): Promise<S>

reject

fun reject(e: Throwable): Promise<Nothing>

resolve

fun <S> resolve(e: S): Promise<S>
fun <S> resolve(e: Promise<S>): Promise<S>

Extension Functions

then

fun <T, S> Promise<Promise<T>>.then(
    onFulfilled: (T) -> S
): Promise<S>
fun <T, S> Promise<Promise<T>>.then(
    onFulfilled: (T) -> S,
    onRejected: (Throwable) -> S
): Promise<S>