Stefan Hacker
45 lines
1.9 KiB
TypeScript
45 lines
1.9 KiB
TypeScript
import { FanOut } from './fanout';
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/** React.js synchronous state interface. */
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export interface SyncStore<T> {
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subscribe: SyncStoreSubscribe;
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getSnapshot: () => T;
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}
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export type SyncStoreSubscribe = (callback: () => void) => SyncStoreUnsubscribe;
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export type SyncStoreUnsubscribe = () => void;
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export type SyncDep<T> = SyncValue<T> & SyncStore<T> & FanOut<void>;
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export type WrapListInSyncDep<T extends unknown[]> = {
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[K in keyof T]: SyncDep<T[K]>;
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};
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export interface Disposable {
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dispose(): void;
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}
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export interface SyncValue<T> {
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value: T;
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}
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export declare class Value<V> extends FanOut<void> implements SyncStore<V>, SyncValue<V> {
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constructor(value: V);
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next(value: V, force?: boolean): void;
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/** ----------------------------------------------------- {@link SyncValue} */
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value: V;
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/** ----------------------------------------------------- {@link SyncStore} */
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readonly subscribe: SyncStoreSubscribe;
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readonly getSnapshot: () => V;
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}
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export declare class Computed<N, V extends unknown[] = any> extends FanOut<void> implements SyncValue<N>, SyncStore<N>, Disposable {
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protected readonly deps: WrapListInSyncDep<V>;
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protected readonly compute: (args: V) => N;
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private cache;
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private subs;
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constructor(deps: WrapListInSyncDep<V>, compute: (args: V) => N);
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private _comp;
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/** ----------------------------------------------------- {@link SyncValue} */
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get value(): N;
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/** ----------------------------------------------------- {@link SyncStore} */
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readonly subscribe: SyncStoreSubscribe;
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readonly getSnapshot: () => N;
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/** ---------------------------------------------------- {@link Disposable} */
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dispose(): void;
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}
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export declare const val: <V>(initial: V) => Value<V>;
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export declare const comp: <V extends unknown[], N>(deps: WrapListInSyncDep<V>, compute: (args: V) => N) => Computed<N, V>;
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