tav-ui
Version:
27 lines (26 loc) • 1.04 kB
TypeScript
/**
* copy to https://github.com/developit/mitt
* Expand clear method
*/
export declare type EventType = string | symbol;
export declare type Handler<T = any> = (event?: T) => void;
export declare type WildcardHandler = (type: EventType, event?: any) => void;
export declare type EventHandlerList = Array<Handler>;
export declare type WildCardEventHandlerList = Array<WildcardHandler>;
export declare type EventHandlerMap = Map<EventType, EventHandlerList | WildCardEventHandlerList>;
export interface Emitter {
all: EventHandlerMap;
on<T = any>(type: EventType, handler: Handler<T>): void;
on(type: '*', handler: WildcardHandler): void;
off<T = any>(type: EventType, handler: Handler<T>): void;
off(type: '*', handler: WildcardHandler): void;
emit<T = any>(type: EventType, event?: T): void;
emit(type: '*', event?: any): void;
clear(): void;
}
/**
* Mitt: Tiny (~200b) functional event emitter / pubsub.
* @name mitt
* @returns {Mitt}
*/
export declare function mitt(all?: EventHandlerMap): Emitter;