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// GENERATED CONTENT - DO NOT EDIT
// Content was automatically extracted by Reffy into webref
// (https://github.com/w3c/webref)
// Source: Observable (https://wicg.github.io/observable/)
[Exposed=*]
interface Subscriber {
undefined next(any value);
undefined error(any error);
undefined complete();
undefined addTeardown(VoidFunction teardown);
// True after the Subscriber is created, up until either
// complete()/error() are invoked, or the subscriber unsubscribes. Inside
// complete()/error(), this attribute is true.
readonly attribute boolean active;
readonly attribute AbortSignal signal;
};
// SubscribeCallback is where the Observable "creator's" code lives. It's
// called when subscribe() is called, to set up a new subscription.
callback SubscribeCallback = undefined (Subscriber subscriber);
callback ObservableSubscriptionCallback = undefined (any value);
dictionary SubscriptionObserver {
ObservableSubscriptionCallback next;
ObservableSubscriptionCallback error;
VoidFunction complete;
};
callback ObservableInspectorAbortHandler = undefined (any value);
dictionary ObservableInspector {
ObservableSubscriptionCallback next;
ObservableSubscriptionCallback error;
VoidFunction complete;
VoidFunction subscribe;
ObservableInspectorAbortHandler abort;
};
typedef (ObservableSubscriptionCallback or SubscriptionObserver) ObserverUnion;
typedef (ObservableSubscriptionCallback or ObservableInspector) ObservableInspectorUnion;
dictionary SubscribeOptions {
AbortSignal signal;
};
callback Predicate = boolean (any value, unsigned long long index);
callback Reducer = any (any accumulator, any currentValue, unsigned long long index);
callback Mapper = any (any value, unsigned long long index);
// Differs from Mapper only in return type, since this callback is exclusively
// used to visit each element in a sequence, not transform it.
callback Visitor = undefined (any value, unsigned long long index);
// This callback returns an `any` that must convert into an `Observable`, via
// the `Observable` conversion semantics.
callback CatchCallback = any (any value);
[Exposed=*]
interface Observable {
constructor(SubscribeCallback callback);
undefined subscribe(optional ObserverUnion observer = {}, optional SubscribeOptions options = {});
// Constructs a native Observable from value if it's any of the following:
// - Observable
// - AsyncIterable
// - Iterable
// - Promise
static Observable from(any value);
// Observable-returning operators. See "Operators" section in the spec.
//
// takeUntil() can consume promises, iterables, async iterables, and other
// observables.
Observable takeUntil(any value);
Observable map(Mapper mapper);
Observable filter(Predicate predicate);
Observable take(unsigned long long amount);
Observable drop(unsigned long long amount);
Observable flatMap(Mapper mapper);
Observable switchMap(Mapper mapper);
Observable inspect(optional ObservableInspectorUnion inspectorUnion = {});
Observable catch(CatchCallback callback);
Observable finally(VoidFunction callback);
// Promise-returning operators.
Promise<sequence<any>> toArray(optional SubscribeOptions options = {});
Promise<undefined> forEach(Visitor callback, optional SubscribeOptions options = {});
Promise<boolean> every(Predicate predicate, optional SubscribeOptions options = {});
Promise<any> first(optional SubscribeOptions options = {});
Promise<any> last(optional SubscribeOptions options = {});
Promise<any> find(Predicate predicate, optional SubscribeOptions options = {});
Promise<boolean> some(Predicate predicate, optional SubscribeOptions options = {});
Promise<any> reduce(Reducer reducer, optional any initialValue, optional SubscribeOptions options = {});
};
dictionary ObservableEventListenerOptions {
boolean capture = false;
boolean passive;
};
partial interface EventTarget {
Observable when(DOMString type, optional ObservableEventListenerOptions options = {});
};
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